Create new QPSK simulation

10 files changed, 1291 insertions, 2567 deletions

diff --git a/flowgraphs/qpsk_sim.grc b/flowgraphs/qpsk_sim.grc
new file mode 100644
index 0000000..a6afefa
--- /dev/null
+++ b/flowgraphs/qpsk_sim.grc
@@ -0,0 +1,913 @@
+options:
+  parameters:
+    author: Naoki Sean Pross, Sara Cinzia Halter
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: qt_gui
+    hier_block_src_path: '.:'
+    id: qpsk_sim
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: '1'
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: QPSK Sim
+    window_size: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 12.0]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: access_code_symbols
+  id: variable
+  parameters:
+    comment: ''
+    value: '[(-0.7071067811865475-0.7071067811865475j), (0.7071067811865475-0.7071067811865475j),
+      (0.7071067811865475+0.7071067811865475j), (0.7071067811865475+0.7071067811865475j),
+      (-0.7071067811865475-0.7071067811865475j), (0.7071067811865475+0.7071067811865475j),
+      (0.7071067811865475-0.7071067811865475j), (0.7071067811865475-0.7071067811865475j)]'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 1092.0]
+    rotation: 0
+    state: true
+- name: carrier_freq
+  id: variable
+  parameters:
+    comment: ''
+    value: 2.4e9
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [472, 572.0]
+    rotation: 0
+    state: true
+- name: excess_bw
+  id: variable
+  parameters:
+    comment: ''
+    value: '0.35'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [336, 1156.0]
+    rotation: 0
+    state: true
+- name: frame
+  id: fadingui_frame_obj
+  parameters:
+    alias: ''
+    comment: ''
+    payload_len: '4096'
+    preamble: '[0xbe, 0xef]'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 532.0]
+    rotation: 0
+    state: disabled
+- name: frame_len
+  id: variable
+  parameters:
+    comment: ''
+    value: len(testvec) +4
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 252.0]
+    rotation: 0
+    state: true
+- name: nfilts
+  id: variable
+  parameters:
+    comment: ''
+    value: '32'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 1156.0]
+    rotation: 0
+    state: true
+- name: qpsk_const
+  id: variable_constellation
+  parameters:
+    comment: ''
+    const_points: '[-1-1j, -1+1j, 1+1j, 1-1j]'
+    dims: '1'
+    precision: '8'
+    rot_sym: '4'
+    soft_dec_lut: None
+    sym_map: '[0, 1, 3, 2]'
+    type: qpsk
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [448, 340.0]
+    rotation: 0
+    state: true
+- name: rrc_taps
+  id: variable
+  parameters:
+    comment: ''
+    value: firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [432, 1156.0]
+    rotation: 0
+    state: true
+- name: samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 1e6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 148.0]
+    rotation: 0
+    state: enabled
+- name: sps
+  id: variable
+  parameters:
+    comment: ''
+    value: '4'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [144, 148.0]
+    rotation: 0
+    state: true
+- name: testvec
+  id: variable
+  parameters:
+    comment: ''
+    value: '[0x1f, 0x35] + [0x12, 0x48] '
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 252.0]
+    rotation: 0
+    state: true
+- name: analog_random_source_x_0
+  id: analog_random_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    max: '255'
+    maxoutbuf: '0'
+    min: '0'
+    minoutbuf: '0'
+    num_samps: '400'
+    repeat: 'True'
+    type: byte
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 420.0]
+    rotation: 0
+    state: true
+- name: blocks_complex_to_mag_0
+  id: blocks_complex_to_mag
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1064, 1080.0]
+    rotation: 0
+    state: true
+- name: blocks_repack_bits_bb_0
+  id: blocks_repack_bits_bb
+  parameters:
+    affinity: ''
+    alias: ''
+    align_output: 'False'
+    comment: ''
+    endianness: gr.GR_LSB_FIRST
+    k: '2'
+    l: '8'
+    len_tag_key: '""'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 1300.0]
+    rotation: 0
+    state: true
+- name: blocks_stream_mux_0
+  id: blocks_stream_mux
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    lengths: '[len(testvec), 4]'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: byte
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 416.0]
+    rotation: 0
+    state: true
+- name: blocks_stream_to_vector_0
+  id: blocks_stream_to_vector
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_items: frame_len
+    type: byte
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [992, 1312.0]
+    rotation: 0
+    state: true
+- name: blocks_tagged_stream_align_0
+  id: blocks_tagged_stream_align
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    lengthtagname: frame_start
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: byte
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [496, 1308.0]
+    rotation: 0
+    state: true
+- name: blocks_throttle_0
+  id: blocks_throttle
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    ignoretag: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samples_per_second: samp_rate
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [720, 428.0]
+    rotation: 0
+    state: true
+- name: blocks_vector_source_x_0
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: byte
+    vector: testvec
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 324.0]
+    rotation: 0
+    state: true
+- name: channels_channel_model_0
+  id: channels_channel_model
+  parameters:
+    affinity: ''
+    alias: ''
+    block_tags: 'False'
+    comment: ''
+    epsilon: '1.0'
+    freq_offset: 2e-3
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    noise_voltage: 100e-3
+    seed: '243'
+    taps: np.exp(1j * 30 / 180 * np.pi)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [312, 716.0]
+    rotation: 0
+    state: enabled
+- name: channels_selective_fading_model_0
+  id: channels_selective_fading_model
+  parameters:
+    K: '4.0'
+    LOS: 'False'
+    N: '8'
+    affinity: ''
+    alias: ''
+    comment: ''
+    delays: (0,1.8)
+    fDTs: ((4*carrier_freq)/(3*10e8))/samp_rate
+    mags: (1,0.12)
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    ntaps: '8'
+    seed: '21'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [600, 572.0]
+    rotation: 0
+    state: disabled
+- name: digital_cma_equalizer_cc_0
+  id: digital_cma_equalizer_cc
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    modulus: '1'
+    mu: 2e-3
+    num_taps: '15'
+    sps: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [528, 980.0]
+    rotation: 0
+    state: true
+- name: digital_constellation_decoder_cb_0
+  id: digital_constellation_decoder_cb
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    constellation: qpsk_const
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 1308.0]
+    rotation: 0
+    state: true
+- name: digital_constellation_modulator_0
+  id: digital_constellation_modulator
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    constellation: qpsk_const
+    differential: 'False'
+    excess_bw: excess_bw
+    log: 'False'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samples_per_symbol: sps
+    verbose: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [448, 404.0]
+    rotation: 0
+    state: true
+- name: digital_corr_est_cc_0
+  id: digital_corr_est_cc
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    mark_delay: len(access_code_symbols) // 2
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    sps: '1'
+    symbols: access_code_symbols
+    threshold: '0.9'
+    threshold_method: digital.THRESHOLD_ABSOLUTE
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 972.0]
+    rotation: 0
+    state: true
+- name: digital_pfb_clock_sync_xxx_0
+  id: digital_pfb_clock_sync_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    filter_size: '32'
+    init_phase: '16'
+    loop_bw: 2 * np.pi / 100
+    max_dev: '1.5'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    osps: '1'
+    sps: sps
+    taps: rrc_taps
+    type: ccf
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 1004.0]
+    rotation: 0
+    state: true
+- name: fadingui_ber_0
+  id: fadingui_ber
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    vgl: testvec + list(np.zeros(4))
+    vlen: frame_len
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1184, 1300.0]
+    rotation: 0
+    state: true
+- name: fadingui_datasource_0
+  id: fadingui_datasource
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    fname: ''
+    frame_obj: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [208, 532.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_multipath_fading_0
+  id: fadingui_multipath_fading
+  parameters:
+    affinity: ''
+    alias: ''
+    amplitudes: '[0.12]'
+    comment: ''
+    delays: '[1.8]'
+    los: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [648, 740.0]
+    rotation: 0
+    state: enabled
+- name: fadingui_netsink_0
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31415
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [704, 316.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_netsink_1
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31415
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 916.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_netsink_3
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31415
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1280, 916.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_netsink_4
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31415
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [528, 916.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_phasecorrection_0
+  id: fadingui_phasecorrection
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    frame_len: frame_len
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1008, 988.0]
+    rotation: 0
+    state: true
+- name: import_0
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import numpy as np
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 12.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_const_sink_x_0
+  id: qtgui_const_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: '"blue"'
+    color10: '"red"'
+    color2: '"red"'
+    color3: '"red"'
+    color4: '"red"'
+    color5: '"red"'
+    color6: '"red"'
+    color7: '"red"'
+    color8: '"red"'
+    color9: '"red"'
+    comment: ''
+    grid: 'False'
+    gui_hint: ''
+    label1: ''
+    label10: ''
+    label2: ''
+    label3: ''
+    label4: ''
+    label5: ''
+    label6: ''
+    label7: ''
+    label8: ''
+    label9: ''
+    legend: 'True'
+    marker1: '0'
+    marker10: '0'
+    marker2: '0'
+    marker3: '0'
+    marker4: '0'
+    marker5: '0'
+    marker6: '0'
+    marker7: '0'
+    marker8: '0'
+    marker9: '0'
+    name: '""'
+    nconnections: '1'
+    size: '1024'
+    style1: '0'
+    style10: '0'
+    style2: '0'
+    style3: '0'
+    style4: '0'
+    style5: '0'
+    style6: '0'
+    style7: '0'
+    style8: '0'
+    style9: '0'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: complex
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    xmax: '2'
+    xmin: '-2'
+    ymax: '2'
+    ymin: '-2'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1240, 828.0]
+    rotation: 0
+    state: true
+- name: qtgui_time_sink_x_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: ''
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: '""'
+    nconnections: '1'
+    size: '1024'
+    srate: samp_rate / sps
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: float
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '10'
+    ymin: '0'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1248, 1060.0]
+    rotation: 0
+    state: true
+- name: virtual_sink_0
+  id: virtual_sink
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: modulated
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [928, 428.0]
+    rotation: 0
+    state: true
+- name: virtual_sink_1
+  id: virtual_sink
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: envelope
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1000, 756.0]
+    rotation: 0
+    state: true
+- name: virtual_sink_2
+  id: virtual_sink
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: symbols
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1312, 988.0]
+    rotation: 0
+    state: true
+- name: virtual_source_0
+  id: virtual_source
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: symbols
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 1308.0]
+    rotation: 0
+    state: true
+- name: virtual_source_1
+  id: virtual_source
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: envelope
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 1052.0]
+    rotation: 0
+    state: true
+- name: virtual_source_2
+  id: virtual_source
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: modulated
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [56, 756.0]
+    rotation: 0
+    state: true
+
+connections:
+- [analog_random_source_x_0, '0', blocks_stream_mux_0, '1']
+- [blocks_complex_to_mag_0, '0', qtgui_time_sink_x_0, '0']
+- [blocks_repack_bits_bb_0, '0', blocks_stream_to_vector_0, '0']
+- [blocks_stream_mux_0, '0', digital_constellation_modulator_0, '0']
+- [blocks_stream_to_vector_0, '0', fadingui_ber_0, '0']
+- [blocks_tagged_stream_align_0, '0', blocks_repack_bits_bb_0, '0']
+- [blocks_throttle_0, '0', virtual_sink_0, '0']
+- [blocks_vector_source_x_0, '0', blocks_stream_mux_0, '0']
+- [channels_channel_model_0, '0', channels_selective_fading_model_0, '0']
+- [channels_channel_model_0, '0', fadingui_multipath_fading_0, '0']
+- [channels_selective_fading_model_0, '0', virtual_sink_1, '0']
+- [digital_cma_equalizer_cc_0, '0', digital_corr_est_cc_0, '0']
+- [digital_cma_equalizer_cc_0, '0', fadingui_netsink_1, '0']
+- [digital_constellation_decoder_cb_0, '0', blocks_tagged_stream_align_0, '0']
+- [digital_constellation_modulator_0, '0', blocks_throttle_0, '0']
+- [digital_constellation_modulator_0, '0', fadingui_netsink_0, '0']
+- [digital_corr_est_cc_0, '0', fadingui_phasecorrection_0, '0']
+- [digital_corr_est_cc_0, '1', blocks_complex_to_mag_0, '0']
+- [digital_pfb_clock_sync_xxx_0, '0', digital_cma_equalizer_cc_0, '0']
+- [digital_pfb_clock_sync_xxx_0, '0', fadingui_netsink_4, '0']
+- [fadingui_datasource_0, '0', digital_constellation_modulator_0, '0']
+- [fadingui_multipath_fading_0, '0', virtual_sink_1, '0']
+- [fadingui_phasecorrection_0, '0', fadingui_netsink_3, '0']
+- [fadingui_phasecorrection_0, '0', qtgui_const_sink_x_0, '0']
+- [fadingui_phasecorrection_0, '0', virtual_sink_2, '0']
+- [virtual_source_0, '0', digital_constellation_decoder_cb_0, '0']
+- [virtual_source_1, '0', digital_pfb_clock_sync_xxx_0, '0']
+- [virtual_source_2, '0', channels_channel_model_0, '0']
+
+metadata:
+  file_format: 1
diff --git a/flowgraphs/qpsk_sim.py b/flowgraphs/qpsk_sim.py
new file mode 100755
index 0000000..12a4894
--- /dev/null
+++ b/flowgraphs/qpsk_sim.py
@@ -0,0 +1,348 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#
+# SPDX-License-Identifier: GPL-3.0
+#
+# GNU Radio Python Flow Graph
+# Title: QPSK Sim
+# Author: Naoki Sean Pross, Sara Cinzia Halter
+# GNU Radio version: 3.8.2.0
+
+from distutils.version import StrictVersion
+
+if __name__ == '__main__':
+    import ctypes
+    import sys
+    if sys.platform.startswith('linux'):
+        try:
+            x11 = ctypes.cdll.LoadLibrary('libX11.so')
+            x11.XInitThreads()
+        except:
+            print("Warning: failed to XInitThreads()")
+
+from PyQt5 import Qt
+from gnuradio import qtgui
+from gnuradio.filter import firdes
+import sip
+from gnuradio import blocks
+import numpy
+from gnuradio import channels
+from gnuradio import digital
+from gnuradio import gr
+import sys
+import signal
+from argparse import ArgumentParser
+from gnuradio.eng_arg import eng_float, intx
+from gnuradio import eng_notation
+import fadingui
+import numpy as np
+
+from gnuradio import qtgui
+
+class qpsk_sim(gr.top_block, Qt.QWidget):
+
+    def __init__(self):
+        gr.top_block.__init__(self, "QPSK Sim")
+        Qt.QWidget.__init__(self)
+        self.setWindowTitle("QPSK Sim")
+        qtgui.util.check_set_qss()
+        try:
+            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
+        except:
+            pass
+        self.top_scroll_layout = Qt.QVBoxLayout()
+        self.setLayout(self.top_scroll_layout)
+        self.top_scroll = Qt.QScrollArea()
+        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
+        self.top_scroll_layout.addWidget(self.top_scroll)
+        self.top_scroll.setWidgetResizable(True)
+        self.top_widget = Qt.QWidget()
+        self.top_scroll.setWidget(self.top_widget)
+        self.top_layout = Qt.QVBoxLayout(self.top_widget)
+        self.top_grid_layout = Qt.QGridLayout()
+        self.top_layout.addLayout(self.top_grid_layout)
+
+        self.settings = Qt.QSettings("GNU Radio", "qpsk_sim")
+
+        try:
+            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
+                self.restoreGeometry(self.settings.value("geometry").toByteArray())
+            else:
+                self.restoreGeometry(self.settings.value("geometry"))
+        except:
+            pass
+
+        ##################################################
+        # Variables
+        ##################################################
+        self.testvec = testvec = [0x1f, 0x35] + [0x12, 0x48]
+        self.sps = sps = 4
+        self.nfilts = nfilts = 32
+        self.excess_bw = excess_bw = 0.35
+        self.samp_rate = samp_rate = 1e6
+        self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts)
+        self.qpsk_const = qpsk_const = digital.constellation_qpsk().base()
+        self.frame_len = frame_len = len(testvec) +4
+        self.carrier_freq = carrier_freq = 2.4e9
+        self.access_code_symbols = access_code_symbols = [(-0.7071067811865475-0.7071067811865475j), (0.7071067811865475-0.7071067811865475j), (0.7071067811865475+0.7071067811865475j), (0.7071067811865475+0.7071067811865475j), (-0.7071067811865475-0.7071067811865475j), (0.7071067811865475+0.7071067811865475j), (0.7071067811865475-0.7071067811865475j), (0.7071067811865475-0.7071067811865475j)]
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
+            1024, #size
+            samp_rate / sps, #samp_rate
+            "", #name
+            1 #number of inputs
+        )
+        self.qtgui_time_sink_x_0.set_update_time(0.10)
+        self.qtgui_time_sink_x_0.set_y_axis(0, 10)
+
+        self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")
+
+        self.qtgui_time_sink_x_0.enable_tags(True)
+        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
+        self.qtgui_time_sink_x_0.enable_autoscale(False)
+        self.qtgui_time_sink_x_0.enable_grid(False)
+        self.qtgui_time_sink_x_0.enable_axis_labels(True)
+        self.qtgui_time_sink_x_0.enable_control_panel(False)
+        self.qtgui_time_sink_x_0.enable_stem_plot(False)
+
+
+        labels = ['Signal 1', 'Signal 2', 'Signal 3', 'Signal 4', 'Signal 5',
+            'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
+        widths = [1, 1, 1, 1, 1,
+            1, 1, 1, 1, 1]
+        colors = ['blue', 'red', 'green', 'black', 'cyan',
+            'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
+        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
+            1.0, 1.0, 1.0, 1.0, 1.0]
+        styles = [1, 1, 1, 1, 1,
+            1, 1, 1, 1, 1]
+        markers = [-1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1]
+
+
+        for i in range(1):
+            if len(labels[i]) == 0:
+                self.qtgui_time_sink_x_0.set_line_label(i, "Data {0}".format(i))
+            else:
+                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
+            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
+            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
+            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
+            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
+            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])
+
+        self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
+        self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_win)
+        self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
+            1024, #size
+            "", #name
+            1 #number of inputs
+        )
+        self.qtgui_const_sink_x_0.set_update_time(0.10)
+        self.qtgui_const_sink_x_0.set_y_axis(-2, 2)
+        self.qtgui_const_sink_x_0.set_x_axis(-2, 2)
+        self.qtgui_const_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
+        self.qtgui_const_sink_x_0.enable_autoscale(False)
+        self.qtgui_const_sink_x_0.enable_grid(False)
+        self.qtgui_const_sink_x_0.enable_axis_labels(True)
+
+
+        labels = ['', '', '', '', '',
+            '', '', '', '', '']
+        widths = [1, 1, 1, 1, 1,
+            1, 1, 1, 1, 1]
+        colors = ["blue", "red", "red", "red", "red",
+            "red", "red", "red", "red", "red"]
+        styles = [0, 0, 0, 0, 0,
+            0, 0, 0, 0, 0]
+        markers = [0, 0, 0, 0, 0,
+            0, 0, 0, 0, 0]
+        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
+            1.0, 1.0, 1.0, 1.0, 1.0]
+
+        for i in range(1):
+            if len(labels[i]) == 0:
+                self.qtgui_const_sink_x_0.set_line_label(i, "Data {0}".format(i))
+            else:
+                self.qtgui_const_sink_x_0.set_line_label(i, labels[i])
+            self.qtgui_const_sink_x_0.set_line_width(i, widths[i])
+            self.qtgui_const_sink_x_0.set_line_color(i, colors[i])
+            self.qtgui_const_sink_x_0.set_line_style(i, styles[i])
+            self.qtgui_const_sink_x_0.set_line_marker(i, markers[i])
+            self.qtgui_const_sink_x_0.set_line_alpha(i, alphas[i])
+
+        self._qtgui_const_sink_x_0_win = sip.wrapinstance(self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
+        self.top_grid_layout.addWidget(self._qtgui_const_sink_x_0_win)
+        self.fadingui_phasecorrection_0 = fadingui.phasecorrection(frame_len)
+        self.fadingui_multipath_fading_0 = fadingui.multipath_fading(amplitudes=[0.12], delays=[1.8], los =True)
+        self.fadingui_ber_0 = fadingui.ber(vgl=testvec + list(np.zeros(4)), vlen=frame_len)
+        self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, 2 * np.pi / 100, rrc_taps, 32, 16, 1.5, 1)
+        self.digital_corr_est_cc_0 = digital.corr_est_cc(access_code_symbols, 1, len(access_code_symbols) // 2, 0.9, digital.THRESHOLD_ABSOLUTE)
+        self.digital_constellation_modulator_0 = digital.generic_mod(
+            constellation=qpsk_const,
+            differential=False,
+            samples_per_symbol=sps,
+            pre_diff_code=True,
+            excess_bw=excess_bw,
+            verbose=False,
+            log=False)
+        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(qpsk_const)
+        self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(15, 1, 2e-3, 1)
+        self.channels_channel_model_0 = channels.channel_model(
+            noise_voltage=100e-3,
+            frequency_offset=2e-3,
+            epsilon=1.0,
+            taps=[np.exp(1j * 30 / 180 * np.pi)],
+            noise_seed=243,
+            block_tags=False)
+        self.blocks_vector_source_x_0 = blocks.vector_source_b(testvec, True, 1, [])
+        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
+        self.blocks_tagged_stream_align_0 = blocks.tagged_stream_align(gr.sizeof_char*1, 'frame_start')
+        self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_char*1, frame_len)
+        self.blocks_stream_mux_0 = blocks.stream_mux(gr.sizeof_char*1, [len(testvec), 4])
+        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(2, 8, "", False, gr.GR_LSB_FIRST)
+        self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1)
+        self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 255, 400))), True)
+
+
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.analog_random_source_x_0, 0), (self.blocks_stream_mux_0, 1))
+        self.connect((self.blocks_complex_to_mag_0, 0), (self.qtgui_time_sink_x_0, 0))
+        self.connect((self.blocks_repack_bits_bb_0, 0), (self.blocks_stream_to_vector_0, 0))
+        self.connect((self.blocks_stream_mux_0, 0), (self.digital_constellation_modulator_0, 0))
+        self.connect((self.blocks_stream_to_vector_0, 0), (self.fadingui_ber_0, 0))
+        self.connect((self.blocks_tagged_stream_align_0, 0), (self.blocks_repack_bits_bb_0, 0))
+        self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0, 0))
+        self.connect((self.blocks_vector_source_x_0, 0), (self.blocks_stream_mux_0, 0))
+        self.connect((self.channels_channel_model_0, 0), (self.fadingui_multipath_fading_0, 0))
+        self.connect((self.digital_cma_equalizer_cc_0, 0), (self.digital_corr_est_cc_0, 0))
+        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.blocks_tagged_stream_align_0, 0))
+        self.connect((self.digital_constellation_modulator_0, 0), (self.blocks_throttle_0, 0))
+        self.connect((self.digital_corr_est_cc_0, 1), (self.blocks_complex_to_mag_0, 0))
+        self.connect((self.digital_corr_est_cc_0, 0), (self.fadingui_phasecorrection_0, 0))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_cma_equalizer_cc_0, 0))
+        self.connect((self.fadingui_multipath_fading_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.digital_constellation_decoder_cb_0, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.qtgui_const_sink_x_0, 0))
+
+
+    def closeEvent(self, event):
+        self.settings = Qt.QSettings("GNU Radio", "qpsk_sim")
+        self.settings.setValue("geometry", self.saveGeometry())
+        event.accept()
+
+    def get_testvec(self):
+        return self.testvec
+
+    def set_testvec(self, testvec):
+        self.testvec = testvec
+        self.set_frame_len(len(self.testvec) +4)
+        self.blocks_vector_source_x_0.set_data(self.testvec, [])
+
+    def get_sps(self):
+        return self.sps
+
+    def set_sps(self, sps):
+        self.sps = sps
+        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), self.excess_bw, 45*self.nfilts))
+        self.qtgui_time_sink_x_0.set_samp_rate(self.samp_rate / self.sps)
+
+    def get_nfilts(self):
+        return self.nfilts
+
+    def set_nfilts(self, nfilts):
+        self.nfilts = nfilts
+        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), self.excess_bw, 45*self.nfilts))
+
+    def get_excess_bw(self):
+        return self.excess_bw
+
+    def set_excess_bw(self, excess_bw):
+        self.excess_bw = excess_bw
+        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), self.excess_bw, 45*self.nfilts))
+
+    def get_samp_rate(self):
+        return self.samp_rate
+
+    def set_samp_rate(self, samp_rate):
+        self.samp_rate = samp_rate
+        self.blocks_throttle_0.set_sample_rate(self.samp_rate)
+        self.qtgui_time_sink_x_0.set_samp_rate(self.samp_rate / self.sps)
+
+    def get_rrc_taps(self):
+        return self.rrc_taps
+
+    def set_rrc_taps(self, rrc_taps):
+        self.rrc_taps = rrc_taps
+        self.digital_pfb_clock_sync_xxx_0.update_taps(self.rrc_taps)
+
+    def get_qpsk_const(self):
+        return self.qpsk_const
+
+    def set_qpsk_const(self, qpsk_const):
+        self.qpsk_const = qpsk_const
+
+    def get_frame_len(self):
+        return self.frame_len
+
+    def set_frame_len(self, frame_len):
+        self.frame_len = frame_len
+
+    def get_carrier_freq(self):
+        return self.carrier_freq
+
+    def set_carrier_freq(self, carrier_freq):
+        self.carrier_freq = carrier_freq
+
+    def get_access_code_symbols(self):
+        return self.access_code_symbols
+
+    def set_access_code_symbols(self, access_code_symbols):
+        self.access_code_symbols = access_code_symbols
+        self.digital_corr_est_cc_0.set_mark_delay(len(self.access_code_symbols) // 2)
+
+
+
+
+
+def main(top_block_cls=qpsk_sim, options=None):
+    if gr.enable_realtime_scheduling() != gr.RT_OK:
+        print("Error: failed to enable real-time scheduling.")
+
+    if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
+        style = gr.prefs().get_string('qtgui', 'style', 'raster')
+        Qt.QApplication.setGraphicsSystem(style)
+    qapp = Qt.QApplication(sys.argv)
+
+    tb = top_block_cls()
+
+    tb.start()
+
+    tb.show()
+
+    def sig_handler(sig=None, frame=None):
+        Qt.QApplication.quit()
+
+    signal.signal(signal.SIGINT, sig_handler)
+    signal.signal(signal.SIGTERM, sig_handler)
+
+    timer = Qt.QTimer()
+    timer.start(500)
+    timer.timeout.connect(lambda: None)
+
+    def quitting():
+        tb.stop()
+        tb.wait()
+
+    qapp.aboutToQuit.connect(quitting)
+    qapp.exec_()
+
+if __name__ == '__main__':
+    main()
diff --git a/simulation/QPSK/qpsk.grc b/simulation/QPSK/qpsk.grc
deleted file mode 100644
index 087f8e0..0000000
--- a/simulation/QPSK/qpsk.grc
+++ /dev/null
@@ -1,1189 +0,0 @@
-options:
-  parameters:
-    author: Pross Naoki, Halter Sara Cinzia
-    category: '[GRC Hier Blocks]'
-    cmake_opt: ''
-    comment: ''
-    copyright: ''
-    description: ''
-    gen_cmake: 'On'
-    gen_linking: dynamic
-    generate_options: qt_gui
-    hier_block_src_path: '.:'
-    id: qpks
-    max_nouts: '0'
-    output_language: python
-    placement: (0,0)
-    qt_qss_theme: ''
-    realtime_scheduling: '1'
-    run: 'True'
-    run_command: '{python} -u {filename}'
-    run_options: prompt
-    sizing_mode: fixed
-    thread_safe_setters: ''
-    title: QPSK
-    window_size: ''
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [8, 8]
-    rotation: 0
-    state: enabled
-
-blocks:
-- name: chn_taps
-  id: variable
-  parameters:
-    comment: ''
-    value: '[1.0 + 0.0j, ]'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [640, 252.0]
-    rotation: 0
-    state: true
-- name: eq_gain
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@1: 0,0,1,1'
-    label: Equalizer Rate
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: '0'
-    step: '.001'
-    stop: '.1'
-    value: '.01'
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1336, 460.0]
-    rotation: 0
-    state: true
-- name: eq_mod
-  id: variable
-  parameters:
-    comment: ''
-    value: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1336, 388.0]
-    rotation: 0
-    state: true
-- name: eq_ntaps
-  id: variable
-  parameters:
-    comment: ''
-    value: '15'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1416, 388.0]
-    rotation: 0
-    state: true
-- name: excess_bw
-  id: variable
-  parameters:
-    comment: ''
-    value: 350e-3
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [320, 268.0]
-    rotation: 0
-    state: true
-- name: freq_offset
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@0: 1,0,1,1'
-    label: Frequency Offset
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: -100e-3
-    step: 1e-3
-    stop: 100e-3
-    value: '0'
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [640, 460.0]
-    rotation: 0
-    state: true
-- name: nfilts
-  id: variable
-  parameters:
-    comment: ''
-    value: '32'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1008, 476.0]
-    rotation: 0
-    state: true
-- name: noise_volt
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@0: 0,0,1,1'
-    label: Noise Voltage
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: '0'
-    step: '0.01'
-    stop: '1'
-    value: '0.0001'
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [504, 460.0]
-    rotation: 0
-    state: true
-- name: phase_bw
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@1: 1,0,1,1'
-    label: Phase Bandwidth
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: '0'
-    step: '.01'
-    stop: '1'
-    value: 2 * 3.141592653589793 / 100
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1640, 428.0]
-    rotation: 0
-    state: true
-- name: qpsk_const
-  id: variable_constellation_rect
-  parameters:
-    comment: ''
-    const_points: '[0.707+1j, -0.707+0.707j, -0.707-0.707j, 0.707-0.707j]'
-    imag_sect: '2'
-    precision: '8'
-    real_sect: '2'
-    rot_sym: '4'
-    soft_dec_lut: None
-    sym_map: '[0, 1, 3, 2]'
-    w_imag_sect: '1'
-    w_real_sect: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [224, 444.0]
-    rotation: 0
-    state: true
-- name: rrc_taps
-  id: variable
-  parameters:
-    comment: ''
-    value: firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts)
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1080, 476.0]
-    rotation: 0
-    state: true
-- name: samp_rate
-  id: variable
-  parameters:
-    comment: ''
-    value: '32000'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [192, 12.0]
-    rotation: 0
-    state: enabled
-- name: sps
-  id: variable
-  parameters:
-    comment: ''
-    value: '4'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [224, 268.0]
-    rotation: 0
-    state: true
-- name: time_offset
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@0: 0,1,1,1'
-    label: Timing Offset
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: '0.999'
-    step: '0.0001'
-    stop: '1.001'
-    value: '1.0'
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [504, 604.0]
-    rotation: 0
-    state: true
-- name: timing_loop_bw
-  id: variable_qtgui_range
-  parameters:
-    comment: ''
-    gui_hint: 'params@0: 1,1,1,1'
-    label: Time Bandwidth
-    min_len: '200'
-    orient: Qt.Horizontal
-    rangeType: float
-    start: '0'
-    step: 10e-3
-    stop: 200e-3
-    value: 2 * 3.141592653589793 / 100
-    widget: counter_slider
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1008, 548.0]
-    rotation: 0
-    state: true
-- name: analog_random_source_x_0
-  id: analog_random_source_x
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    max: '256'
-    maxoutbuf: '0'
-    min: '0'
-    minoutbuf: '0'
-    num_samps: '1000'
-    repeat: 'True'
-    type: byte
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [32, 332.0]
-    rotation: 0
-    state: enabled
-- name: blocks_char_to_float_0
-  id: blocks_char_to_float
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    scale: '1'
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2272, 276.0]
-    rotation: 0
-    state: true
-- name: blocks_char_to_float_0_0
-  id: blocks_char_to_float
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    scale: '1'
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [408, 840.0]
-    rotation: 0
-    state: true
-- name: blocks_delay_0
-  id: blocks_delay
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    delay: '50'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    num_ports: '1'
-    type: float
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2264, 844.0]
-    rotation: 0
-    state: true
-- name: blocks_throttle_0
-  id: blocks_throttle
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    ignoretag: 'True'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    samples_per_second: samp_rate
-    type: complex
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [464, 356.0]
-    rotation: 0
-    state: enabled
-- name: blocks_unpack_k_bits_bb_0
-  id: blocks_unpack_k_bits_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    k: '2'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2192, 436.0]
-    rotation: 0
-    state: true
-- name: blocks_unpack_k_bits_bb_0_0
-  id: blocks_unpack_k_bits_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    k: '2'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [232, 840.0]
-    rotation: 0
-    state: true
-- name: channels_channel_model_0
-  id: channels_channel_model
-  parameters:
-    affinity: ''
-    alias: ''
-    block_tags: 'False'
-    comment: ''
-    epsilon: time_offset
-    freq_offset: freq_offset
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    noise_voltage: noise_volt
-    seed: '0'
-    taps: chn_taps
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [640, 316.0]
-    rotation: 0
-    state: enabled
-- name: digital_cma_equalizer_cc_0
-  id: digital_cma_equalizer_cc
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    modulus: eq_mod
-    mu: eq_gain
-    num_taps: eq_ntaps
-    sps: '2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1336, 284.0]
-    rotation: 0
-    state: true
-- name: digital_constellation_decoder_cb_0
-  id: digital_constellation_decoder_cb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    constellation: qpsk_const
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1976, 276.0]
-    rotation: 0
-    state: true
-- name: digital_constellation_modulator_0
-  id: digital_constellation_modulator
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    constellation: qpsk_const
-    differential: 'True'
-    excess_bw: excess_bw
-    log: 'False'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    samples_per_symbol: sps
-    verbose: 'False'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [224, 332.0]
-    rotation: 0
-    state: enabled
-- name: digital_costas_loop_cc_0
-  id: digital_costas_loop_cc
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    order: '4'
-    use_snr: 'False'
-    w: phase_bw
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1640, 280.0]
-    rotation: 0
-    state: true
-- name: digital_diff_decoder_bb_0
-  id: digital_diff_decoder_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    modulus: '4'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1976, 348.0]
-    rotation: 180
-    state: true
-- name: digital_map_bb_0
-  id: digital_map_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    map: '[0, 1, 3, 2]'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1984, 436.0]
-    rotation: 0
-    state: true
-- name: digital_pfb_clock_sync_xxx_0
-  id: digital_pfb_clock_sync_xxx
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    filter_size: nfilts
-    init_phase: nfilts/2
-    loop_bw: timing_loop_bw
-    max_dev: '1.5'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    osps: '2'
-    sps: sps * 1.001
-    taps: rrc_taps
-    type: ccf
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1000, 308.0]
-    rotation: 0
-    state: true
-- name: params
-  id: qtgui_tab_widget
-  parameters:
-    alias: ''
-    comment: ''
-    gui_hint: ''
-    label0: Channel
-    label1: Receiver
-    label10: Tab 10
-    label11: Tab 11
-    label12: Tab 12
-    label13: Tab 13
-    label14: Tab 14
-    label15: Tab 15
-    label16: Tab 16
-    label17: Tab 17
-    label18: Tab 18
-    label19: Tab 19
-    label2: Tab 2
-    label3: Tab 3
-    label4: Tab 4
-    label5: Tab 5
-    label6: Tab 6
-    label7: Tab 7
-    label8: Tab 8
-    label9: Tab 9
-    num_tabs: '2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [296, 12.0]
-    rotation: 0
-    state: true
-- name: plots
-  id: qtgui_tab_widget
-  parameters:
-    alias: ''
-    comment: ''
-    gui_hint: ''
-    label0: Constellations
-    label1: Frequency
-    label10: Tab 10
-    label11: Tab 11
-    label12: Tab 12
-    label13: Tab 13
-    label14: Tab 14
-    label15: Tab 15
-    label16: Tab 16
-    label17: Tab 17
-    label18: Tab 18
-    label19: Tab 19
-    label2: Time
-    label3: Tab 3
-    label4: Tab 4
-    label5: Tab 5
-    label6: Tab 6
-    label7: Tab 7
-    label8: Tab 8
-    label9: Tab 9
-    num_tabs: '3'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [448, 12.0]
-    rotation: 0
-    state: true
-- name: qtgui_const_sink_x_0
-  id: qtgui_const_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    axislabels: 'True'
-    color1: '"blue"'
-    color10: '"red"'
-    color2: '"red"'
-    color3: '"red"'
-    color4: '"red"'
-    color5: '"red"'
-    color6: '"red"'
-    color7: '"red"'
-    color8: '"red"'
-    color9: '"red"'
-    comment: ''
-    grid: 'False'
-    gui_hint: 'plots@0: 0,0,1,1'
-    label1: ''
-    label10: ''
-    label2: ''
-    label3: ''
-    label4: ''
-    label5: ''
-    label6: ''
-    label7: ''
-    label8: ''
-    label9: ''
-    legend: 'True'
-    marker1: '0'
-    marker10: '0'
-    marker2: '0'
-    marker3: '0'
-    marker4: '0'
-    marker5: '0'
-    marker6: '0'
-    marker7: '0'
-    marker8: '0'
-    marker9: '0'
-    name: '"Channel"'
-    nconnections: '1'
-    size: '2048'
-    style1: '0'
-    style10: '0'
-    style2: '0'
-    style3: '0'
-    style4: '0'
-    style5: '0'
-    style6: '0'
-    style7: '0'
-    style8: '0'
-    style9: '0'
-    tr_chan: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_slope: qtgui.TRIG_SLOPE_POS
-    tr_tag: '""'
-    type: complex
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    xmax: '2'
-    xmin: '-2'
-    ymax: '2'
-    ymin: '-2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [836.0, 128]
-    rotation: 90
-    state: enabled
-- name: qtgui_const_sink_x_0_0
-  id: qtgui_const_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    axislabels: 'True'
-    color1: '"blue"'
-    color10: '"red"'
-    color2: '"red"'
-    color3: '"red"'
-    color4: '"red"'
-    color5: '"red"'
-    color6: '"red"'
-    color7: '"red"'
-    color8: '"red"'
-    color9: '"red"'
-    comment: ''
-    grid: 'False'
-    gui_hint: 'plots@0: 0,1,1,1'
-    label1: ''
-    label10: ''
-    label2: ''
-    label3: ''
-    label4: ''
-    label5: ''
-    label6: ''
-    label7: ''
-    label8: ''
-    label9: ''
-    legend: 'True'
-    marker1: '0'
-    marker10: '0'
-    marker2: '0'
-    marker3: '0'
-    marker4: '0'
-    marker5: '0'
-    marker6: '0'
-    marker7: '0'
-    marker8: '0'
-    marker9: '0'
-    name: '"Synchronized"'
-    nconnections: '1'
-    size: '2048'
-    style1: '0'
-    style10: '0'
-    style2: '0'
-    style3: '0'
-    style4: '0'
-    style5: '0'
-    style6: '0'
-    style7: '0'
-    style8: '0'
-    style9: '0'
-    tr_chan: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_slope: qtgui.TRIG_SLOPE_POS
-    tr_tag: '""'
-    type: complex
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    xmax: '2'
-    xmin: '-2'
-    ymax: '2'
-    ymin: '-2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1228.0, 88]
-    rotation: 90
-    state: enabled
-- name: qtgui_const_sink_x_1
-  id: qtgui_const_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    axislabels: 'True'
-    color1: '"blue"'
-    color10: '"red"'
-    color2: '"red"'
-    color3: '"red"'
-    color4: '"red"'
-    color5: '"red"'
-    color6: '"red"'
-    color7: '"red"'
-    color8: '"red"'
-    color9: '"red"'
-    comment: ''
-    grid: 'False'
-    gui_hint: 'plots@0: 1,0,1,1'
-    label1: ''
-    label10: ''
-    label2: ''
-    label3: ''
-    label4: ''
-    label5: ''
-    label6: ''
-    label7: ''
-    label8: ''
-    label9: ''
-    legend: 'True'
-    marker1: '0'
-    marker10: '0'
-    marker2: '0'
-    marker3: '0'
-    marker4: '0'
-    marker5: '0'
-    marker6: '0'
-    marker7: '0'
-    marker8: '0'
-    marker9: '0'
-    name: '"Equalized"'
-    nconnections: '1'
-    size: '1024'
-    style1: '0'
-    style10: '0'
-    style2: '0'
-    style3: '0'
-    style4: '0'
-    style5: '0'
-    style6: '0'
-    style7: '0'
-    style8: '0'
-    style9: '0'
-    tr_chan: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_slope: qtgui.TRIG_SLOPE_POS
-    tr_tag: '""'
-    type: complex
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    xmax: '2'
-    xmin: '-2'
-    ymax: '2'
-    ymin: '-2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1524.0, 88]
-    rotation: 90
-    state: true
-- name: qtgui_const_sink_x_2
-  id: qtgui_const_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    axislabels: 'True'
-    color1: '"blue"'
-    color10: '"red"'
-    color2: '"red"'
-    color3: '"red"'
-    color4: '"red"'
-    color5: '"red"'
-    color6: '"red"'
-    color7: '"red"'
-    color8: '"red"'
-    color9: '"red"'
-    comment: ''
-    grid: 'False'
-    gui_hint: 'plots@0: 1,1,1,1'
-    label1: ''
-    label10: ''
-    label2: ''
-    label3: ''
-    label4: ''
-    label5: ''
-    label6: ''
-    label7: ''
-    label8: ''
-    label9: ''
-    legend: 'True'
-    marker1: '0'
-    marker10: '0'
-    marker2: '0'
-    marker3: '0'
-    marker4: '0'
-    marker5: '0'
-    marker6: '0'
-    marker7: '0'
-    marker8: '0'
-    marker9: '0'
-    name: '"Locked"'
-    nconnections: '1'
-    size: '1024'
-    style1: '0'
-    style10: '0'
-    style2: '0'
-    style3: '0'
-    style4: '0'
-    style5: '0'
-    style6: '0'
-    style7: '0'
-    style8: '0'
-    style9: '0'
-    tr_chan: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_slope: qtgui.TRIG_SLOPE_POS
-    tr_tag: '""'
-    type: complex
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    xmax: '2'
-    xmin: '-2'
-    ymax: '2'
-    ymin: '-2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1860.0, 64]
-    rotation: 90
-    state: true
-- name: qtgui_freq_sink_x_0
-  id: qtgui_freq_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    average: '1.0'
-    axislabels: 'True'
-    bw: samp_rate
-    color1: '"blue"'
-    color10: '"dark blue"'
-    color2: '"red"'
-    color3: '"green"'
-    color4: '"black"'
-    color5: '"cyan"'
-    color6: '"magenta"'
-    color7: '"yellow"'
-    color8: '"dark red"'
-    color9: '"dark green"'
-    comment: ''
-    ctrlpanel: 'False'
-    fc: '0'
-    fftsize: '1024'
-    freqhalf: 'True'
-    grid: 'False'
-    gui_hint: 'plots@1: 0,0,1,1'
-    label: Relative Gain
-    label1: ''
-    label10: ''''''
-    label2: ''''''
-    label3: ''''''
-    label4: ''''''
-    label5: ''''''
-    label6: ''''''
-    label7: ''''''
-    label8: ''''''
-    label9: ''''''
-    legend: 'True'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    name: '"Channel"'
-    nconnections: '1'
-    showports: 'False'
-    tr_chan: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_tag: '""'
-    type: complex
-    units: dB
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    wintype: firdes.WIN_BLACKMAN_hARRIS
-    ymax: '10'
-    ymin: '-140'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [856.0, 472]
-    rotation: 270
-    state: true
-- name: qtgui_time_sink_x_0
-  id: qtgui_time_sink_x
-  parameters:
-    affinity: ''
-    alias: ''
-    alpha1: '1.0'
-    alpha10: '1.0'
-    alpha2: '1.0'
-    alpha3: '1.0'
-    alpha4: '1.0'
-    alpha5: '1.0'
-    alpha6: '1.0'
-    alpha7: '1.0'
-    alpha8: '1.0'
-    alpha9: '1.0'
-    autoscale: 'False'
-    axislabels: 'True'
-    color1: blue
-    color10: dark blue
-    color2: red
-    color3: green
-    color4: black
-    color5: cyan
-    color6: magenta
-    color7: yellow
-    color8: dark red
-    color9: dark green
-    comment: ''
-    ctrlpanel: 'False'
-    entags: 'True'
-    grid: 'False'
-    gui_hint: 'plots@2: 0,0,1,1'
-    label1: Received
-    label10: Signal 10
-    label2: Sent
-    label3: Signal 3
-    label4: Signal 4
-    label5: Signal 5
-    label6: Signal 6
-    label7: Signal 7
-    label8: Signal 8
-    label9: Signal 9
-    legend: 'True'
-    marker1: '-1'
-    marker10: '-1'
-    marker2: '-1'
-    marker3: '-1'
-    marker4: '-1'
-    marker5: '-1'
-    marker6: '-1'
-    marker7: '-1'
-    marker8: '-1'
-    marker9: '-1'
-    name: '"Decoded"'
-    nconnections: '2'
-    size: '1024'
-    srate: samp_rate
-    stemplot: 'False'
-    style1: '1'
-    style10: '1'
-    style2: '1'
-    style3: '1'
-    style4: '1'
-    style5: '1'
-    style6: '1'
-    style7: '1'
-    style8: '1'
-    style9: '1'
-    tr_chan: '0'
-    tr_delay: '0'
-    tr_level: '0.0'
-    tr_mode: qtgui.TRIG_MODE_FREE
-    tr_slope: qtgui.TRIG_SLOPE_POS
-    tr_tag: '""'
-    type: float
-    update_time: '0.10'
-    width1: '1'
-    width10: '1'
-    width2: '1'
-    width3: '1'
-    width4: '1'
-    width5: '1'
-    width6: '1'
-    width7: '1'
-    width8: '1'
-    width9: '1'
-    ylabel: Amplitude
-    ymax: '1'
-    ymin: '-1'
-    yunit: '""'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2504, 268.0]
-    rotation: 0
-    state: true
-
-connections:
-- [analog_random_source_x_0, '0', blocks_unpack_k_bits_bb_0_0, '0']
-- [analog_random_source_x_0, '0', digital_constellation_modulator_0, '0']
-- [blocks_char_to_float_0, '0', qtgui_time_sink_x_0, '0']
-- [blocks_char_to_float_0_0, '0', blocks_delay_0, '0']
-- [blocks_delay_0, '0', qtgui_time_sink_x_0, '1']
-- [blocks_throttle_0, '0', channels_channel_model_0, '0']
-- [blocks_unpack_k_bits_bb_0, '0', blocks_char_to_float_0, '0']
-- [blocks_unpack_k_bits_bb_0_0, '0', blocks_char_to_float_0_0, '0']
-- [channels_channel_model_0, '0', digital_pfb_clock_sync_xxx_0, '0']
-- [channels_channel_model_0, '0', qtgui_const_sink_x_0, '0']
-- [channels_channel_model_0, '0', qtgui_freq_sink_x_0, '0']
-- [digital_cma_equalizer_cc_0, '0', digital_costas_loop_cc_0, '0']
-- [digital_cma_equalizer_cc_0, '0', qtgui_const_sink_x_1, '0']
-- [digital_constellation_decoder_cb_0, '0', digital_diff_decoder_bb_0, '0']
-- [digital_constellation_modulator_0, '0', blocks_throttle_0, '0']
-- [digital_costas_loop_cc_0, '0', digital_constellation_decoder_cb_0, '0']
-- [digital_costas_loop_cc_0, '0', qtgui_const_sink_x_2, '0']
-- [digital_diff_decoder_bb_0, '0', digital_map_bb_0, '0']
-- [digital_map_bb_0, '0', blocks_unpack_k_bits_bb_0, '0']
-- [digital_pfb_clock_sync_xxx_0, '0', digital_cma_equalizer_cc_0, '0']
-- [digital_pfb_clock_sync_xxx_0, '0', qtgui_const_sink_x_0_0, '0']
-
-metadata:
-  file_format: 1
diff --git a/simulation/QPSK/qpsk.py b/simulation/QPSK/qpsk.py
deleted file mode 100755
index 5649fb9..0000000
--- a/simulation/QPSK/qpsk.py
+++ /dev/null
@@ -1,655 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-#
-# SPDX-License-Identifier: GPL-3.0
-#
-# GNU Radio Python Flow Graph
-# Title: QPSK
-# Author: Pross Naoki, Halter Sara Cinzia
-# GNU Radio version: 3.9.2.0
-
-from distutils.version import StrictVersion
-
-if __name__ == '__main__':
-    import ctypes
-    import sys
-    if sys.platform.startswith('linux'):
-        try:
-            x11 = ctypes.cdll.LoadLibrary('libX11.so')
-            x11.XInitThreads()
-        except:
-            print("Warning: failed to XInitThreads()")
-
-from PyQt5 import Qt
-from gnuradio import qtgui
-from gnuradio.filter import firdes
-import sip
-from gnuradio import blocks
-import numpy
-from gnuradio import channels
-from gnuradio import digital
-from gnuradio import gr
-from gnuradio.fft import window
-import sys
-import signal
-from argparse import ArgumentParser
-from gnuradio.eng_arg import eng_float, intx
-from gnuradio import eng_notation
-from gnuradio.qtgui import Range, RangeWidget
-from PyQt5 import QtCore
-
-
-
-from gnuradio import qtgui
-
-class qpks(gr.top_block, Qt.QWidget):
-
-    def __init__(self):
-        gr.top_block.__init__(self, "QPSK", catch_exceptions=True)
-        Qt.QWidget.__init__(self)
-        self.setWindowTitle("QPSK")
-        qtgui.util.check_set_qss()
-        try:
-            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
-        except:
-            pass
-        self.top_scroll_layout = Qt.QVBoxLayout()
-        self.setLayout(self.top_scroll_layout)
-        self.top_scroll = Qt.QScrollArea()
-        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
-        self.top_scroll_layout.addWidget(self.top_scroll)
-        self.top_scroll.setWidgetResizable(True)
-        self.top_widget = Qt.QWidget()
-        self.top_scroll.setWidget(self.top_widget)
-        self.top_layout = Qt.QVBoxLayout(self.top_widget)
-        self.top_grid_layout = Qt.QGridLayout()
-        self.top_layout.addLayout(self.top_grid_layout)
-
-        self.settings = Qt.QSettings("GNU Radio", "qpks")
-
-        try:
-            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
-                self.restoreGeometry(self.settings.value("geometry").toByteArray())
-            else:
-                self.restoreGeometry(self.settings.value("geometry"))
-        except:
-            pass
-
-        ##################################################
-        # Variables
-        ##################################################
-        self.sps = sps = 4
-        self.nfilts = nfilts = 32
-        self.timing_loop_bw = timing_loop_bw = 2 * 3.141592653589793 / 100
-        self.time_offset = time_offset = 1.0
-        self.samp_rate = samp_rate = 32000
-        self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), 0.35, 45*nfilts)
-        self.qpsk_const = qpsk_const = digital.constellation_rect([0.707+0.707j, -0.707+0.707j, -0.707-0.707j, 0.707-0.707j], [0, 1, 3, 2],
-        4, 2, 2, 1, 1).base()
-        self.phase_bw = phase_bw = 2 * 3.141592653589793 / 100
-        self.noise_volt = noise_volt = 0.0001
-        self.freq_offset = freq_offset = 0
-        self.excess_bw = excess_bw = 350e-3
-        self.eq_ntaps = eq_ntaps = 15
-        self.eq_mod = eq_mod = 1
-        self.eq_gain = eq_gain = .01
-        self.chn_taps = chn_taps = [1.0 + 0.0j, ]
-
-        ##################################################
-        # Blocks
-        ##################################################
-        self.params = Qt.QTabWidget()
-        self.params_widget_0 = Qt.QWidget()
-        self.params_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.params_widget_0)
-        self.params_grid_layout_0 = Qt.QGridLayout()
-        self.params_layout_0.addLayout(self.params_grid_layout_0)
-        self.params.addTab(self.params_widget_0, 'Channel')
-        self.params_widget_1 = Qt.QWidget()
-        self.params_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.params_widget_1)
-        self.params_grid_layout_1 = Qt.QGridLayout()
-        self.params_layout_1.addLayout(self.params_grid_layout_1)
-        self.params.addTab(self.params_widget_1, 'Receiver')
-        self.top_layout.addWidget(self.params)
-        self._timing_loop_bw_range = Range(0, 200e-3, 10e-3, 2 * 3.141592653589793 / 100, 200)
-        self._timing_loop_bw_win = RangeWidget(self._timing_loop_bw_range, self.set_timing_loop_bw, 'Time Bandwidth', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_0.addWidget(self._timing_loop_bw_win, 1, 1, 1, 1)
-        for r in range(1, 2):
-            self.params_grid_layout_0.setRowStretch(r, 1)
-        for c in range(1, 2):
-            self.params_grid_layout_0.setColumnStretch(c, 1)
-        self._time_offset_range = Range(0.999, 1.001, 0.0001, 1.0, 200)
-        self._time_offset_win = RangeWidget(self._time_offset_range, self.set_time_offset, 'Timing Offset', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_0.addWidget(self._time_offset_win, 0, 1, 1, 1)
-        for r in range(0, 1):
-            self.params_grid_layout_0.setRowStretch(r, 1)
-        for c in range(1, 2):
-            self.params_grid_layout_0.setColumnStretch(c, 1)
-        self.plots = Qt.QTabWidget()
-        self.plots_widget_0 = Qt.QWidget()
-        self.plots_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_0)
-        self.plots_grid_layout_0 = Qt.QGridLayout()
-        self.plots_layout_0.addLayout(self.plots_grid_layout_0)
-        self.plots.addTab(self.plots_widget_0, 'Constellations')
-        self.plots_widget_1 = Qt.QWidget()
-        self.plots_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_1)
-        self.plots_grid_layout_1 = Qt.QGridLayout()
-        self.plots_layout_1.addLayout(self.plots_grid_layout_1)
-        self.plots.addTab(self.plots_widget_1, 'Frequency')
-        self.plots_widget_2 = Qt.QWidget()
-        self.plots_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_2)
-        self.plots_grid_layout_2 = Qt.QGridLayout()
-        self.plots_layout_2.addLayout(self.plots_grid_layout_2)
-        self.plots.addTab(self.plots_widget_2, 'Time')
-        self.top_layout.addWidget(self.plots)
-        self._phase_bw_range = Range(0, 1, .01, 2 * 3.141592653589793 / 100, 200)
-        self._phase_bw_win = RangeWidget(self._phase_bw_range, self.set_phase_bw, 'Phase Bandwidth', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_1.addWidget(self._phase_bw_win, 1, 0, 1, 1)
-        for r in range(1, 2):
-            self.params_grid_layout_1.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.params_grid_layout_1.setColumnStretch(c, 1)
-        self._noise_volt_range = Range(0, 1, 0.01, 0.0001, 200)
-        self._noise_volt_win = RangeWidget(self._noise_volt_range, self.set_noise_volt, 'Noise Voltage', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_0.addWidget(self._noise_volt_win, 0, 0, 1, 1)
-        for r in range(0, 1):
-            self.params_grid_layout_0.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.params_grid_layout_0.setColumnStretch(c, 1)
-        self._freq_offset_range = Range(-100e-3, 100e-3, 1e-3, 0, 200)
-        self._freq_offset_win = RangeWidget(self._freq_offset_range, self.set_freq_offset, 'Frequency Offset', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_0.addWidget(self._freq_offset_win, 1, 0, 1, 1)
-        for r in range(1, 2):
-            self.params_grid_layout_0.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.params_grid_layout_0.setColumnStretch(c, 1)
-        self._eq_gain_range = Range(0, .1, .001, .01, 200)
-        self._eq_gain_win = RangeWidget(self._eq_gain_range, self.set_eq_gain, 'Equalizer Rate', "counter_slider", float, QtCore.Qt.Horizontal)
-        self.params_grid_layout_1.addWidget(self._eq_gain_win, 0, 0, 1, 1)
-        for r in range(0, 1):
-            self.params_grid_layout_1.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.params_grid_layout_1.setColumnStretch(c, 1)
-        self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
-            1024, #size
-            samp_rate, #samp_rate
-            "Decoded", #name
-            2, #number of inputs
-            None # parent
-        )
-        self.qtgui_time_sink_x_0.set_update_time(0.10)
-        self.qtgui_time_sink_x_0.set_y_axis(-1, 1)
-
-        self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")
-
-        self.qtgui_time_sink_x_0.enable_tags(True)
-        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
-        self.qtgui_time_sink_x_0.enable_autoscale(True)
-        self.qtgui_time_sink_x_0.enable_grid(False)
-        self.qtgui_time_sink_x_0.enable_axis_labels(True)
-        self.qtgui_time_sink_x_0.enable_control_panel(False)
-        self.qtgui_time_sink_x_0.enable_stem_plot(False)
-
-
-        labels = ['Signal 1', 'Signal 2', 'Signal 3', 'Signal 4', 'Signal 5',
-            'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ['blue', 'red', 'green', 'black', 'cyan',
-            'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-        styles = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        markers = [-1, -1, -1, -1, -1,
-            -1, -1, -1, -1, -1]
-
-
-        for i in range(2):
-            if len(labels[i]) == 0:
-                self.qtgui_time_sink_x_0.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
-            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
-            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
-            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
-            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
-            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])
-
-        self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_2.addWidget(self._qtgui_time_sink_x_0_win, 0, 0, 1, 1)
-        for r in range(0, 1):
-            self.plots_grid_layout_2.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.plots_grid_layout_2.setColumnStretch(c, 1)
-        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
-            1024, #size
-            window.WIN_BLACKMAN_hARRIS, #wintype
-            0, #fc
-            samp_rate, #bw
-            "Channel", #name
-            1,
-            None # parent
-        )
-        self.qtgui_freq_sink_x_0.set_update_time(0.10)
-        self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
-        self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
-        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
-        self.qtgui_freq_sink_x_0.enable_autoscale(False)
-        self.qtgui_freq_sink_x_0.enable_grid(False)
-        self.qtgui_freq_sink_x_0.set_fft_average(1.0)
-        self.qtgui_freq_sink_x_0.enable_axis_labels(True)
-        self.qtgui_freq_sink_x_0.enable_control_panel(False)
-        self.qtgui_freq_sink_x_0.set_fft_window_normalized(False)
-
-
-
-        labels = ['', '', '', '', '',
-            '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ["blue", "red", "green", "black", "cyan",
-            "magenta", "yellow", "dark red", "dark green", "dark blue"]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-
-        for i in range(1):
-            if len(labels[i]) == 0:
-                self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
-            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
-            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
-            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])
-
-        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_1.addWidget(self._qtgui_freq_sink_x_0_win, 0, 0, 1, 1)
-        for r in range(0, 1):
-            self.plots_grid_layout_1.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.plots_grid_layout_1.setColumnStretch(c, 1)
-        self.qtgui_const_sink_x_2 = qtgui.const_sink_c(
-            1024, #size
-            "Locked", #name
-            1, #number of inputs
-            None # parent
-        )
-        self.qtgui_const_sink_x_2.set_update_time(0.10)
-        self.qtgui_const_sink_x_2.set_y_axis(-2, 2)
-        self.qtgui_const_sink_x_2.set_x_axis(-2, 2)
-        self.qtgui_const_sink_x_2.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
-        self.qtgui_const_sink_x_2.enable_autoscale(False)
-        self.qtgui_const_sink_x_2.enable_grid(False)
-        self.qtgui_const_sink_x_2.enable_axis_labels(True)
-
-
-        labels = ['', '', '', '', '',
-            '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ["blue", "red", "red", "red", "red",
-            "red", "red", "red", "red", "red"]
-        styles = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        markers = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-
-        for i in range(1):
-            if len(labels[i]) == 0:
-                self.qtgui_const_sink_x_2.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_const_sink_x_2.set_line_label(i, labels[i])
-            self.qtgui_const_sink_x_2.set_line_width(i, widths[i])
-            self.qtgui_const_sink_x_2.set_line_color(i, colors[i])
-            self.qtgui_const_sink_x_2.set_line_style(i, styles[i])
-            self.qtgui_const_sink_x_2.set_line_marker(i, markers[i])
-            self.qtgui_const_sink_x_2.set_line_alpha(i, alphas[i])
-
-        self._qtgui_const_sink_x_2_win = sip.wrapinstance(self.qtgui_const_sink_x_2.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_0.addWidget(self._qtgui_const_sink_x_2_win, 1, 1, 1, 1)
-        for r in range(1, 2):
-            self.plots_grid_layout_0.setRowStretch(r, 1)
-        for c in range(1, 2):
-            self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.qtgui_const_sink_x_1 = qtgui.const_sink_c(
-            1024, #size
-            "Equalized", #name
-            1, #number of inputs
-            None # parent
-        )
-        self.qtgui_const_sink_x_1.set_update_time(0.10)
-        self.qtgui_const_sink_x_1.set_y_axis(-2, 2)
-        self.qtgui_const_sink_x_1.set_x_axis(-2, 2)
-        self.qtgui_const_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
-        self.qtgui_const_sink_x_1.enable_autoscale(False)
-        self.qtgui_const_sink_x_1.enable_grid(False)
-        self.qtgui_const_sink_x_1.enable_axis_labels(True)
-
-
-        labels = ['', '', '', '', '',
-            '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ["blue", "red", "red", "red", "red",
-            "red", "red", "red", "red", "red"]
-        styles = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        markers = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-
-        for i in range(1):
-            if len(labels[i]) == 0:
-                self.qtgui_const_sink_x_1.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_const_sink_x_1.set_line_label(i, labels[i])
-            self.qtgui_const_sink_x_1.set_line_width(i, widths[i])
-            self.qtgui_const_sink_x_1.set_line_color(i, colors[i])
-            self.qtgui_const_sink_x_1.set_line_style(i, styles[i])
-            self.qtgui_const_sink_x_1.set_line_marker(i, markers[i])
-            self.qtgui_const_sink_x_1.set_line_alpha(i, alphas[i])
-
-        self._qtgui_const_sink_x_1_win = sip.wrapinstance(self.qtgui_const_sink_x_1.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_0.addWidget(self._qtgui_const_sink_x_1_win, 1, 0, 1, 1)
-        for r in range(1, 2):
-            self.plots_grid_layout_0.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.qtgui_const_sink_x_0_0 = qtgui.const_sink_c(
-            2048, #size
-            "Synchronized", #name
-            1, #number of inputs
-            None # parent
-        )
-        self.qtgui_const_sink_x_0_0.set_update_time(0.10)
-        self.qtgui_const_sink_x_0_0.set_y_axis(-2, 2)
-        self.qtgui_const_sink_x_0_0.set_x_axis(-2, 2)
-        self.qtgui_const_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
-        self.qtgui_const_sink_x_0_0.enable_autoscale(False)
-        self.qtgui_const_sink_x_0_0.enable_grid(False)
-        self.qtgui_const_sink_x_0_0.enable_axis_labels(True)
-
-
-        labels = ['', '', '', '', '',
-            '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ["blue", "red", "red", "red", "red",
-            "red", "red", "red", "red", "red"]
-        styles = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        markers = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-
-        for i in range(1):
-            if len(labels[i]) == 0:
-                self.qtgui_const_sink_x_0_0.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_const_sink_x_0_0.set_line_label(i, labels[i])
-            self.qtgui_const_sink_x_0_0.set_line_width(i, widths[i])
-            self.qtgui_const_sink_x_0_0.set_line_color(i, colors[i])
-            self.qtgui_const_sink_x_0_0.set_line_style(i, styles[i])
-            self.qtgui_const_sink_x_0_0.set_line_marker(i, markers[i])
-            self.qtgui_const_sink_x_0_0.set_line_alpha(i, alphas[i])
-
-        self._qtgui_const_sink_x_0_0_win = sip.wrapinstance(self.qtgui_const_sink_x_0_0.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_0.addWidget(self._qtgui_const_sink_x_0_0_win, 0, 1, 1, 1)
-        for r in range(0, 1):
-            self.plots_grid_layout_0.setRowStretch(r, 1)
-        for c in range(1, 2):
-            self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
-            2048, #size
-            "Channel", #name
-            1, #number of inputs
-            None # parent
-        )
-        self.qtgui_const_sink_x_0.set_update_time(0.10)
-        self.qtgui_const_sink_x_0.set_y_axis(-2, 2)
-        self.qtgui_const_sink_x_0.set_x_axis(-2, 2)
-        self.qtgui_const_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
-        self.qtgui_const_sink_x_0.enable_autoscale(False)
-        self.qtgui_const_sink_x_0.enable_grid(False)
-        self.qtgui_const_sink_x_0.enable_axis_labels(True)
-
-
-        labels = ['', '', '', '', '',
-            '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-            1, 1, 1, 1, 1]
-        colors = ["blue", "red", "red", "red", "red",
-            "red", "red", "red", "red", "red"]
-        styles = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        markers = [0, 0, 0, 0, 0,
-            0, 0, 0, 0, 0]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-            1.0, 1.0, 1.0, 1.0, 1.0]
-
-        for i in range(1):
-            if len(labels[i]) == 0:
-                self.qtgui_const_sink_x_0.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_const_sink_x_0.set_line_label(i, labels[i])
-            self.qtgui_const_sink_x_0.set_line_width(i, widths[i])
-            self.qtgui_const_sink_x_0.set_line_color(i, colors[i])
-            self.qtgui_const_sink_x_0.set_line_style(i, styles[i])
-            self.qtgui_const_sink_x_0.set_line_marker(i, markers[i])
-            self.qtgui_const_sink_x_0.set_line_alpha(i, alphas[i])
-
-        self._qtgui_const_sink_x_0_win = sip.wrapinstance(self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
-        self.plots_grid_layout_0.addWidget(self._qtgui_const_sink_x_0_win, 0, 0, 1, 1)
-        for r in range(0, 1):
-            self.plots_grid_layout_0.setRowStretch(r, 1)
-        for c in range(0, 1):
-            self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps * 1.001, timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 2)
-        self.digital_map_bb_0 = digital.map_bb([0, 1, 3, 2])
-        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(4)
-        self.digital_costas_loop_cc_0 = digital.costas_loop_cc(phase_bw, 4, False)
-        self.digital_constellation_modulator_0 = digital.generic_mod(
-            constellation=qpsk_const,
-            differential=True,
-            samples_per_symbol=sps,
-            pre_diff_code=True,
-            excess_bw=excess_bw,
-            verbose=False,
-            log=False,
-            truncate=False)
-        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(qpsk_const)
-        self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, 2)
-        self.channels_channel_model_0 = channels.channel_model(
-            noise_voltage=noise_volt,
-            frequency_offset=freq_offset,
-            epsilon=time_offset,
-            taps=chn_taps,
-            noise_seed=0,
-            block_tags=False)
-        self.blocks_unpack_k_bits_bb_0_0 = blocks.unpack_k_bits_bb(2)
-        self.blocks_unpack_k_bits_bb_0 = blocks.unpack_k_bits_bb(2)
-        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
-        self.blocks_delay_0 = blocks.delay(gr.sizeof_float*1, 50)
-        self.blocks_char_to_float_0_0 = blocks.char_to_float(1, 1)
-        self.blocks_char_to_float_0 = blocks.char_to_float(1, 1)
-        self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 256, 1000))), True)
-
-
-
-        ##################################################
-        # Connections
-        ##################################################
-        self.connect((self.analog_random_source_x_0, 0), (self.blocks_unpack_k_bits_bb_0_0, 0))
-        self.connect((self.analog_random_source_x_0, 0), (self.digital_constellation_modulator_0, 0))
-        self.connect((self.blocks_char_to_float_0, 0), (self.qtgui_time_sink_x_0, 0))
-        self.connect((self.blocks_char_to_float_0_0, 0), (self.blocks_delay_0, 0))
-        self.connect((self.blocks_delay_0, 0), (self.qtgui_time_sink_x_0, 1))
-        self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0, 0))
-        self.connect((self.blocks_unpack_k_bits_bb_0, 0), (self.blocks_char_to_float_0, 0))
-        self.connect((self.blocks_unpack_k_bits_bb_0_0, 0), (self.blocks_char_to_float_0_0, 0))
-        self.connect((self.channels_channel_model_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
-        self.connect((self.channels_channel_model_0, 0), (self.qtgui_const_sink_x_0, 0))
-        self.connect((self.channels_channel_model_0, 0), (self.qtgui_freq_sink_x_0, 0))
-        self.connect((self.digital_cma_equalizer_cc_0, 0), (self.digital_costas_loop_cc_0, 0))
-        self.connect((self.digital_cma_equalizer_cc_0, 0), (self.qtgui_const_sink_x_1, 0))
-        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_diff_decoder_bb_0, 0))
-        self.connect((self.digital_constellation_modulator_0, 0), (self.blocks_throttle_0, 0))
-        self.connect((self.digital_costas_loop_cc_0, 0), (self.digital_constellation_decoder_cb_0, 0))
-        self.connect((self.digital_costas_loop_cc_0, 0), (self.qtgui_const_sink_x_2, 0))
-        self.connect((self.digital_diff_decoder_bb_0, 0), (self.digital_map_bb_0, 0))
-        self.connect((self.digital_map_bb_0, 0), (self.blocks_unpack_k_bits_bb_0, 0))
-        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_cma_equalizer_cc_0, 0))
-        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.qtgui_const_sink_x_0_0, 0))
-
-
-    def closeEvent(self, event):
-        self.settings = Qt.QSettings("GNU Radio", "qpks")
-        self.settings.setValue("geometry", self.saveGeometry())
-        self.stop()
-        self.wait()
-
-        event.accept()
-
-    def get_sps(self):
-        return self.sps
-
-    def set_sps(self, sps):
-        self.sps = sps
-        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), 0.35, 45*self.nfilts))
-
-    def get_nfilts(self):
-        return self.nfilts
-
-    def set_nfilts(self, nfilts):
-        self.nfilts = nfilts
-        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), 0.35, 45*self.nfilts))
-
-    def get_timing_loop_bw(self):
-        return self.timing_loop_bw
-
-    def set_timing_loop_bw(self, timing_loop_bw):
-        self.timing_loop_bw = timing_loop_bw
-        self.digital_pfb_clock_sync_xxx_0.set_loop_bandwidth(self.timing_loop_bw)
-
-    def get_time_offset(self):
-        return self.time_offset
-
-    def set_time_offset(self, time_offset):
-        self.time_offset = time_offset
-        self.channels_channel_model_0.set_timing_offset(self.time_offset)
-
-    def get_samp_rate(self):
-        return self.samp_rate
-
-    def set_samp_rate(self, samp_rate):
-        self.samp_rate = samp_rate
-        self.blocks_throttle_0.set_sample_rate(self.samp_rate)
-        self.qtgui_freq_sink_x_0.set_frequency_range(0, self.samp_rate)
-        self.qtgui_time_sink_x_0.set_samp_rate(self.samp_rate)
-
-    def get_rrc_taps(self):
-        return self.rrc_taps
-
-    def set_rrc_taps(self, rrc_taps):
-        self.rrc_taps = rrc_taps
-        self.digital_pfb_clock_sync_xxx_0.update_taps(self.rrc_taps)
-
-    def get_qpsk_const(self):
-        return self.qpsk_const
-
-    def set_qpsk_const(self, qpsk_const):
-        self.qpsk_const = qpsk_const
-
-    def get_phase_bw(self):
-        return self.phase_bw
-
-    def set_phase_bw(self, phase_bw):
-        self.phase_bw = phase_bw
-        self.digital_costas_loop_cc_0.set_loop_bandwidth(self.phase_bw)
-
-    def get_noise_volt(self):
-        return self.noise_volt
-
-    def set_noise_volt(self, noise_volt):
-        self.noise_volt = noise_volt
-        self.channels_channel_model_0.set_noise_voltage(self.noise_volt)
-
-    def get_freq_offset(self):
-        return self.freq_offset
-
-    def set_freq_offset(self, freq_offset):
-        self.freq_offset = freq_offset
-        self.channels_channel_model_0.set_frequency_offset(self.freq_offset)
-
-    def get_excess_bw(self):
-        return self.excess_bw
-
-    def set_excess_bw(self, excess_bw):
-        self.excess_bw = excess_bw
-
-    def get_eq_ntaps(self):
-        return self.eq_ntaps
-
-    def set_eq_ntaps(self, eq_ntaps):
-        self.eq_ntaps = eq_ntaps
-
-    def get_eq_mod(self):
-        return self.eq_mod
-
-    def set_eq_mod(self, eq_mod):
-        self.eq_mod = eq_mod
-        self.digital_cma_equalizer_cc_0.set_modulus(self.eq_mod)
-
-    def get_eq_gain(self):
-        return self.eq_gain
-
-    def set_eq_gain(self, eq_gain):
-        self.eq_gain = eq_gain
-        self.digital_cma_equalizer_cc_0.set_gain(self.eq_gain)
-
-    def get_chn_taps(self):
-        return self.chn_taps
-
-    def set_chn_taps(self, chn_taps):
-        self.chn_taps = chn_taps
-        self.channels_channel_model_0.set_taps(self.chn_taps)
-
-
-
-
-def main(top_block_cls=qpks, options=None):
-    if gr.enable_realtime_scheduling() != gr.RT_OK:
-        print("Error: failed to enable real-time scheduling.")
-
-    if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
-        style = gr.prefs().get_string('qtgui', 'style', 'raster')
-        Qt.QApplication.setGraphicsSystem(style)
-    qapp = Qt.QApplication(sys.argv)
-
-    tb = top_block_cls()
-
-    tb.start()
-
-    tb.show()
-
-    def sig_handler(sig=None, frame=None):
-        tb.stop()
-        tb.wait()
-
-        Qt.QApplication.quit()
-
-    signal.signal(signal.SIGINT, sig_handler)
-    signal.signal(signal.SIGTERM, sig_handler)
-
-    timer = Qt.QTimer()
-    timer.start(500)
-    timer.timeout.connect(lambda: None)
-
-    qapp.exec_()
-
-if __name__ == '__main__':
-    main()
diff --git a/simulation/QPSK/qpsk_nogui.grc b/simulation/QPSK/qpsk_nogui.grc
deleted file mode 100644
index e27ecc7..0000000
--- a/simulation/QPSK/qpsk_nogui.grc
+++ /dev/null
@@ -1,479 +0,0 @@
-options:
-  parameters:
-    author: Naoki Pross
-    catch_exceptions: 'True'
-    category: '[GRC Hier Blocks]'
-    cmake_opt: ''
-    comment: ''
-    copyright: ''
-    description: ''
-    gen_cmake: 'On'
-    gen_linking: dynamic
-    generate_options: no_gui
-    hier_block_src_path: '.:'
-    id: qpsk_nogui
-    max_nouts: '0'
-    output_language: python
-    placement: (0,0)
-    qt_qss_theme: ''
-    realtime_scheduling: '1'
-    run: 'True'
-    run_command: '{python} -u {filename}'
-    run_options: prompt
-    sizing_mode: fixed
-    thread_safe_setters: ''
-    title: QPSK with IMGUI
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [8, 8]
-    rotation: 0
-    state: enabled
-
-blocks:
-- name: chn_taps
-  id: variable
-  parameters:
-    comment: ''
-    value: '[1.0 + 0.0j, ]'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [672, 204.0]
-    rotation: 0
-    state: true
-- name: eq_gain
-  id: variable
-  parameters:
-    comment: ''
-    value: '.01'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1376, 420.0]
-    rotation: 0
-    state: true
-- name: eq_mod
-  id: variable
-  parameters:
-    comment: ''
-    value: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1376, 352.0]
-    rotation: 0
-    state: true
-- name: eq_ntaps
-  id: variable
-  parameters:
-    comment: ''
-    value: '15'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1456, 352.0]
-    rotation: 0
-    state: true
-- name: excess_bw
-  id: variable
-  parameters:
-    comment: ''
-    value: 350e-3
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [352, 224.0]
-    rotation: 0
-    state: true
-- name: freq_offset
-  id: variable
-  parameters:
-    comment: ''
-    value: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [768, 204.0]
-    rotation: 0
-    state: true
-- name: nfilts
-  id: variable
-  parameters:
-    comment: ''
-    value: '32'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1040, 432.0]
-    rotation: 0
-    state: true
-- name: noise_volt
-  id: variable
-  parameters:
-    comment: ''
-    value: 100e-6
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [672, 132.0]
-    rotation: 0
-    state: true
-- name: phase_bw
-  id: variable
-  parameters:
-    comment: ''
-    value: 2 * 3.141592653589793 / 100
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1680, 380.0]
-    rotation: 0
-    state: true
-- name: qpsk_const
-  id: variable_constellation_rect
-  parameters:
-    comment: ''
-    const_points: '[0.707+0.707j, -0.707+0.707j, -0.707-0.707j, 0.707-0.707j]'
-    imag_sect: '2'
-    precision: '8'
-    real_sect: '2'
-    rot_sym: '4'
-    soft_dec_lut: None
-    sym_map: '[0, 1, 3, 2]'
-    w_imag_sect: '1'
-    w_real_sect: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [256, 396.0]
-    rotation: 0
-    state: true
-- name: rrc_taps
-  id: variable
-  parameters:
-    comment: ''
-    value: firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), 0.35, 45*nfilts)
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1120, 432.0]
-    rotation: 0
-    state: true
-- name: samp_rate
-  id: variable
-  parameters:
-    comment: ''
-    value: '32000'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [184, 12]
-    rotation: 0
-    state: enabled
-- name: sps
-  id: variable
-  parameters:
-    comment: ''
-    value: '4'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [256, 224.0]
-    rotation: 0
-    state: true
-- name: time_offset
-  id: variable
-  parameters:
-    comment: ''
-    value: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [768, 132.0]
-    rotation: 0
-    state: true
-- name: timing_loop_bw
-  id: variable
-  parameters:
-    comment: ''
-    value: 2 * 3.141592653589793 / 100
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1040, 508.0]
-    rotation: 0
-    state: true
-- name: analog_random_source_x_0
-  id: analog_random_source_x
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    max: '256'
-    maxoutbuf: '0'
-    min: '0'
-    minoutbuf: '0'
-    num_samps: '1000'
-    repeat: 'True'
-    type: byte
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [64, 288.0]
-    rotation: 0
-    state: enabled
-- name: blocks_char_to_float_0
-  id: blocks_char_to_float
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    scale: '1'
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2304, 232.0]
-    rotation: 0
-    state: true
-- name: blocks_null_sink_0
-  id: blocks_null_sink
-  parameters:
-    affinity: ''
-    alias: ''
-    bus_structure_sink: '[[0,],]'
-    comment: ''
-    num_inputs: '1'
-    type: float
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2504, 240.0]
-    rotation: 0
-    state: true
-- name: blocks_throttle_0
-  id: blocks_throttle
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    ignoretag: 'True'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    samples_per_second: samp_rate
-    type: complex
-    vlen: '1'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [496, 312.0]
-    rotation: 0
-    state: enabled
-- name: blocks_unpack_k_bits_bb_0
-  id: blocks_unpack_k_bits_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    k: '2'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2224, 392.0]
-    rotation: 0
-    state: true
-- name: channels_channel_model_0
-  id: channels_channel_model
-  parameters:
-    affinity: ''
-    alias: ''
-    block_tags: 'False'
-    comment: ''
-    epsilon: time_offset
-    freq_offset: freq_offset
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    noise_voltage: noise_volt
-    seed: '0'
-    taps: chn_taps
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [672, 272.0]
-    rotation: 0
-    state: enabled
-- name: digital_cma_equalizer_cc_0
-  id: digital_cma_equalizer_cc
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    modulus: eq_mod
-    mu: eq_gain
-    num_taps: eq_ntaps
-    sps: '2'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1376, 240.0]
-    rotation: 0
-    state: true
-- name: digital_constellation_decoder_cb_0
-  id: digital_constellation_decoder_cb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    constellation: qpsk_const
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2016, 232.0]
-    rotation: 0
-    state: true
-- name: digital_constellation_modulator_0
-  id: digital_constellation_modulator
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    constellation: qpsk_const
-    differential: 'True'
-    excess_bw: excess_bw
-    log: 'False'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    samples_per_symbol: sps
-    truncate: 'False'
-    verbose: 'False'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [256, 288.0]
-    rotation: 0
-    state: enabled
-- name: digital_costas_loop_cc_0
-  id: digital_costas_loop_cc
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    order: '4'
-    use_snr: 'False'
-    w: phase_bw
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1680, 240.0]
-    rotation: 0
-    state: true
-- name: digital_diff_decoder_bb_0
-  id: digital_diff_decoder_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    modulus: '4'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2016, 312.0]
-    rotation: 180
-    state: true
-- name: digital_map_bb_0
-  id: digital_map_bb
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    map: '[0, 1, 3, 2]'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [2016, 392.0]
-    rotation: 0
-    state: true
-- name: digital_pfb_clock_sync_xxx_0
-  id: digital_pfb_clock_sync_xxx
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    filter_size: nfilts
-    init_phase: nfilts/2
-    loop_bw: timing_loop_bw
-    max_dev: '1.5'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    osps: '2'
-    sps: sps * 1.001
-    taps: rrc_taps
-    type: ccf
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [1040, 264.0]
-    rotation: 0
-    state: true
-
-connections:
-- [analog_random_source_x_0, '0', digital_constellation_modulator_0, '0']
-- [blocks_char_to_float_0, '0', blocks_null_sink_0, '0']
-- [blocks_throttle_0, '0', channels_channel_model_0, '0']
-- [blocks_unpack_k_bits_bb_0, '0', blocks_char_to_float_0, '0']
-- [channels_channel_model_0, '0', digital_pfb_clock_sync_xxx_0, '0']
-- [digital_cma_equalizer_cc_0, '0', digital_costas_loop_cc_0, '0']
-- [digital_constellation_decoder_cb_0, '0', digital_diff_decoder_bb_0, '0']
-- [digital_constellation_modulator_0, '0', blocks_throttle_0, '0']
-- [digital_costas_loop_cc_0, '0', digital_constellation_decoder_cb_0, '0']
-- [digital_diff_decoder_bb_0, '0', digital_map_bb_0, '0']
-- [digital_map_bb_0, '0', blocks_unpack_k_bits_bb_0, '0']
-- [digital_pfb_clock_sync_xxx_0, '0', digital_cma_equalizer_cc_0, '0']
-
-metadata:
-  file_format: 1
diff --git a/simulation/QPSK/qpsk_nogui.py b/simulation/QPSK/qpsk_nogui.py
deleted file mode 100755
index 2b32473..0000000
--- a/simulation/QPSK/qpsk_nogui.py
+++ /dev/null
@@ -1,230 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-#
-# SPDX-License-Identifier: GPL-3.0
-#
-# GNU Radio Python Flow Graph
-# Title: QPSK with IMGUI
-# Author: Naoki Pross
-# GNU Radio version: 3.8.2.0
-
-from gnuradio import blocks
-import numpy
-from gnuradio import channels
-from gnuradio.filter import firdes
-from gnuradio import digital
-from gnuradio import gr
-import sys
-import signal
-from argparse import ArgumentParser
-from gnuradio.eng_arg import eng_float, intx
-from gnuradio import eng_notation
-
-
-class qpsk_nogui(gr.top_block):
-
-    def __init__(self):
-        gr.top_block.__init__(self, "QPSK with IMGUI")
-
-        ##################################################
-        # Variables
-        ##################################################
-        self.sps = sps = 4
-        self.nfilts = nfilts = 32
-        self.timing_loop_bw = timing_loop_bw = 2 * 3.141592653589793 / 100
-        self.time_offset = time_offset = 1
-        self.samp_rate = samp_rate = 32000
-        self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), 0.35, 45*nfilts)
-        self.qpsk_const = qpsk_const = digital.constellation_rect([0.707+0.707j, -0.707+0.707j, -0.707-0.707j, 0.707-0.707j], [0, 1, 3, 2],
-        4, 2, 2, 1, 1).base()
-        self.phase_bw = phase_bw = 2 * 3.141592653589793 / 100
-        self.noise_volt = noise_volt = 100e-6
-        self.freq_offset = freq_offset = 0
-        self.excess_bw = excess_bw = 350e-3
-        self.eq_ntaps = eq_ntaps = 15
-        self.eq_mod = eq_mod = 1
-        self.eq_gain = eq_gain = .01
-        self.chn_taps = chn_taps = [1.0 + 0.0j, ]
-
-        ##################################################
-        # Blocks
-        ##################################################
-        self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps * 1.001, timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 2)
-        self.digital_map_bb_0 = digital.map_bb([0, 1, 3, 2])
-        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(4)
-        self.digital_costas_loop_cc_0 = digital.costas_loop_cc(phase_bw, 4, False)
-        self.digital_constellation_modulator_0 = digital.generic_mod(
-            constellation=qpsk_const,
-            differential=True,
-            samples_per_symbol=sps,
-            pre_diff_code=True,
-            excess_bw=excess_bw,
-            verbose=False,
-            log=False)
-        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(qpsk_const)
-        self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, 2)
-        self.channels_channel_model_0 = channels.channel_model(
-            noise_voltage=noise_volt,
-            frequency_offset=freq_offset,
-            epsilon=time_offset,
-            taps=chn_taps,
-            noise_seed=0,
-            block_tags=False)
-        self.blocks_unpack_k_bits_bb_0 = blocks.unpack_k_bits_bb(2)
-        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
-        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float*1)
-        self.blocks_char_to_float_0 = blocks.char_to_float(1, 1)
-        self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 256, 1000))), True)
-
-
-
-        ##################################################
-        # Connections
-        ##################################################
-        self.connect((self.analog_random_source_x_0, 0), (self.digital_constellation_modulator_0, 0))
-        self.connect((self.blocks_char_to_float_0, 0), (self.blocks_null_sink_0, 0))
-        self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0, 0))
-        self.connect((self.blocks_unpack_k_bits_bb_0, 0), (self.blocks_char_to_float_0, 0))
-        self.connect((self.channels_channel_model_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
-        self.connect((self.digital_cma_equalizer_cc_0, 0), (self.digital_costas_loop_cc_0, 0))
-        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_diff_decoder_bb_0, 0))
-        self.connect((self.digital_constellation_modulator_0, 0), (self.blocks_throttle_0, 0))
-        self.connect((self.digital_costas_loop_cc_0, 0), (self.digital_constellation_decoder_cb_0, 0))
-        self.connect((self.digital_diff_decoder_bb_0, 0), (self.digital_map_bb_0, 0))
-        self.connect((self.digital_map_bb_0, 0), (self.blocks_unpack_k_bits_bb_0, 0))
-        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_cma_equalizer_cc_0, 0))
-
-
-    def get_sps(self):
-        return self.sps
-
-    def set_sps(self, sps):
-        self.sps = sps
-        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), 0.35, 45*self.nfilts))
-
-    def get_nfilts(self):
-        return self.nfilts
-
-    def set_nfilts(self, nfilts):
-        self.nfilts = nfilts
-        self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), 0.35, 45*self.nfilts))
-
-    def get_timing_loop_bw(self):
-        return self.timing_loop_bw
-
-    def set_timing_loop_bw(self, timing_loop_bw):
-        self.timing_loop_bw = timing_loop_bw
-        self.digital_pfb_clock_sync_xxx_0.set_loop_bandwidth(self.timing_loop_bw)
-
-    def get_time_offset(self):
-        return self.time_offset
-
-    def set_time_offset(self, time_offset):
-        self.time_offset = time_offset
-        self.channels_channel_model_0.set_timing_offset(self.time_offset)
-
-    def get_samp_rate(self):
-        return self.samp_rate
-
-    def set_samp_rate(self, samp_rate):
-        self.samp_rate = samp_rate
-        self.blocks_throttle_0.set_sample_rate(self.samp_rate)
-
-    def get_rrc_taps(self):
-        return self.rrc_taps
-
-    def set_rrc_taps(self, rrc_taps):
-        self.rrc_taps = rrc_taps
-        self.digital_pfb_clock_sync_xxx_0.update_taps(self.rrc_taps)
-
-    def get_qpsk_const(self):
-        return self.qpsk_const
-
-    def set_qpsk_const(self, qpsk_const):
-        self.qpsk_const = qpsk_const
-
-    def get_phase_bw(self):
-        return self.phase_bw
-
-    def set_phase_bw(self, phase_bw):
-        self.phase_bw = phase_bw
-        self.digital_costas_loop_cc_0.set_loop_bandwidth(self.phase_bw)
-
-    def get_noise_volt(self):
-        return self.noise_volt
-
-    def set_noise_volt(self, noise_volt):
-        self.noise_volt = noise_volt
-        self.channels_channel_model_0.set_noise_voltage(self.noise_volt)
-
-    def get_freq_offset(self):
-        return self.freq_offset
-
-    def set_freq_offset(self, freq_offset):
-        self.freq_offset = freq_offset
-        self.channels_channel_model_0.set_frequency_offset(self.freq_offset)
-
-    def get_excess_bw(self):
-        return self.excess_bw
-
-    def set_excess_bw(self, excess_bw):
-        self.excess_bw = excess_bw
-
-    def get_eq_ntaps(self):
-        return self.eq_ntaps
-
-    def set_eq_ntaps(self, eq_ntaps):
-        self.eq_ntaps = eq_ntaps
-
-    def get_eq_mod(self):
-        return self.eq_mod
-
-    def set_eq_mod(self, eq_mod):
-        self.eq_mod = eq_mod
-        self.digital_cma_equalizer_cc_0.set_modulus(self.eq_mod)
-
-    def get_eq_gain(self):
-        return self.eq_gain
-
-    def set_eq_gain(self, eq_gain):
-        self.eq_gain = eq_gain
-        self.digital_cma_equalizer_cc_0.set_gain(self.eq_gain)
-
-    def get_chn_taps(self):
-        return self.chn_taps
-
-    def set_chn_taps(self, chn_taps):
-        self.chn_taps = chn_taps
-        self.channels_channel_model_0.set_taps(self.chn_taps)
-
-
-
-
-
-def main(top_block_cls=qpsk_nogui, options=None):
-    if gr.enable_realtime_scheduling() != gr.RT_OK:
-        print("Error: failed to enable real-time scheduling.")
-    tb = top_block_cls()
-
-    def sig_handler(sig=None, frame=None):
-        tb.stop()
-        tb.wait()
-
-        sys.exit(0)
-
-    signal.signal(signal.SIGINT, sig_handler)
-    signal.signal(signal.SIGTERM, sig_handler)
-
-    tb.start()
-
-    try:
-        input('Press Enter to quit: ')
-    except EOFError:
-        pass
-    tb.stop()
-    tb.wait()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/src/gr-fadingui/grc/fadingui_datasource.block.yml b/src/gr-fadingui/grc/fadingui_datasource.block.yml
index 6c31995..b972433 100644
--- a/src/gr-fadingui/grc/fadingui_datasource.block.yml
+++ b/src/gr-fadingui/grc/fadingui_datasource.block.yml
@@ -16,7 +16,7 @@ parameters:
   label: Frame Object
   type: raw
 - id: fname 
-  label: List of files
+  label: File
   dtype: file_open
 
 #  Make one 'inputs' list entry per input and one 'outputs' list entry per output.
diff --git a/src/gr-fadingui/grc/fadingui_phasecorrection.block.yml b/src/gr-fadingui/grc/fadingui_phasecorrection.block.yml
index d70ea2f..7e7e57c 100644
--- a/src/gr-fadingui/grc/fadingui_phasecorrection.block.yml
+++ b/src/gr-fadingui/grc/fadingui_phasecorrection.block.yml
@@ -6,7 +6,11 @@ parameters:
 
 templates:
   imports: import fadingui
-  make: fadingui.phasecorrection()
+  make: fadingui.phasecorrection(${frame_len})
+
+parameters:
+- id: frame_len
+  type: int
 
 inputs:
 - label: in
diff --git a/src/gr-fadingui/python/logger.py b/src/gr-fadingui/python/logger.py
index a189aeb..a101b9e 100644
--- a/src/gr-fadingui/python/logger.py
+++ b/src/gr-fadingui/python/logger.py
@@ -10,5 +10,5 @@ def get_logger(module):
     log.addHandler(stdout_handler)
     stdout_handler.setFormatter(formatter)
 
-    log.setLevel(logging.DEBUG)
+    log.setLevel(logging.WARNING)
     return log
diff --git a/src/gr-fadingui/python/phasecorrection.py b/src/gr-fadingui/python/phasecorrection.py
index 75ca280..cd3fa37 100644
--- a/src/gr-fadingui/python/phasecorrection.py
+++ b/src/gr-fadingui/python/phasecorrection.py
@@ -20,7 +20,7 @@ class phasecorrection(gr.sync_block):
     The correlation peak tags are NOT propagated, and instead replaced with a
     frame_start tag.
     """
-    def __init__(self):
+    def __init__(self, frame_len):
         gr.sync_block.__init__(
             self,
             name='Phase and Frequency Correction',
@@ -31,6 +31,9 @@ class phasecorrection(gr.sync_block):
         # tags should not be propagated, we then output our own tags
         self.set_tag_propagation_policy(gr.TPP_DONT)
 
+        # save frame length
+        self.frame_len = frame_len
+
         # because we do block processing, we need to keep track of the last tag
         # of the previous block to correct the first values of the next block
         self.last = None
@@ -54,6 +57,9 @@ class phasecorrection(gr.sync_block):
         # compute number of samples between tags
         nsamples = end.offset - start.offset
 
+        # debugging, see last lines of self.work()
+        self.lastnsamples = nsamples
+
         # unpack pmt values into start and end phase
         sphase = pmt.to_python(start.value)
         ephase = pmt.to_python(end.value)
@@ -75,6 +81,7 @@ class phasecorrection(gr.sync_block):
 
     def work(self, input_items, output_items):
         counter = self.nitems_written(0)
+        log.debug(f"Counter is at {counter} (nitems_written)")
 
         # nicer aliases
         inp = input_items[0]
@@ -82,7 +89,8 @@ class phasecorrection(gr.sync_block):
 
         # read phase tags
         is_phase = lambda tag: pmt.to_python(tag.key) == "phase_est"
-        tags = list(filter(is_phase, self.get_tags_in_window(0, 0, len(inp))))
+        tags = list(filter(is_phase, self.get_tags_in_range( \
+                0, counter, counter + len(inp))))
 
         if not tags:
             log.warning(f"There were no tags in {len(inp)} samples!")
@@ -113,11 +121,11 @@ class phasecorrection(gr.sync_block):
                 if self.last and nfront else np.zeros(nfront)
 
         # debugging
-        if self.lastnback + self.nfront != self.lastnsamples:
-            log.warn("Something went wrong during block processing!\n" \
+        if self.lastnback + nfront != self.lastnsamples:
+            log.warn("Something went wrong during block processing! " \
                     f"Last block finished with nback = {self.lastnback} samples, " \
-                    f"current block starts with nstart = {self.nstart}, but their sum" \
-                    f"is not {self.latnsamples} = size of last chunk")
+                    f"current block starts with nfront = {nfront}, but their sum " \
+                    f"is not {self.lastnsamples} = size of last chunk")
         self.lastnback = nback
 
         # compute correction
@@ -125,13 +133,17 @@ class phasecorrection(gr.sync_block):
         length = len(correction)
 
         # write outputs
-        out[:length] = inp[:length] * correction
+        out[:] = inp * correction
 
         # save last tag for next call
         self.last = tags[-1]
 
-        # add tags
-        for tag in tags:
-            self.add_item_tag(0, tag.offset, pmt.intern("frame_start"), pmt.PMT_T)
+        # add frame_start tags
+        is_start = lambda tag: pmt.to_python(tag.key) == "corr_start"
+        start_tags = list(filter(is_start, \
+                self.get_tags_in_range(0, counter, counter + len(inp))))
+        for tag in start_tags:
+            self.add_item_tag(0, tag.offset +1, pmt.intern("frame_start"), \
+                    pmt.from_long(self.frame_len))
 
-        return len(out)
\ No newline at end of file
+        return len(out)