Add data and flowgraph for (broken) QAM on hardware

10 files changed, 2246 insertions, 21 deletions

diff --git a/doc/thesis/Makefile b/doc/thesis/Makefile
index 0afb1f6..a44ecc6 100644
--- a/doc/thesis/Makefile
+++ b/doc/thesis/Makefile
@@ -35,6 +35,7 @@ DATA := \
 	figures/data/rice_pdf.dat \
 	\
 	figures/data/qpsk_hw_lab.dat \
+	figures/data/qam_hw_lab.dat \
 	\
 	figures/data/qpsk_sim_nochannel.dat \
 	\
diff --git a/doc/thesis/figures/data/flowgraphs/channel_qam_hw_lab.dat b/doc/thesis/figures/data/flowgraphs/channel_qam_hw_lab.dat
new file mode 100644
index 0000000..4a04026
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/channel_qam_hw_lab.dat
diff --git a/doc/thesis/figures/data/flowgraphs/equalized_qam_hw_lab.dat b/doc/thesis/figures/data/flowgraphs/equalized_qam_hw_lab.dat
new file mode 100644
index 0000000..fa4d8e5
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/equalized_qam_hw_lab.dat
diff --git a/doc/thesis/figures/data/flowgraphs/locked_qam_hw_lab.dat b/doc/thesis/figures/data/flowgraphs/locked_qam_hw_lab.dat
new file mode 100644
index 0000000..f3c9b92
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/locked_qam_hw_lab.dat
diff --git a/doc/thesis/figures/data/flowgraphs/synchronized_qam_hw_lab.dat b/doc/thesis/figures/data/flowgraphs/synchronized_qam_hw_lab.dat
new file mode 100644
index 0000000..cdbbe25
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/synchronized_qam_hw_lab.dat
diff --git a/doc/thesis/figures/data/qam_hw_lab.py b/doc/thesis/figures/data/qam_hw_lab.py
new file mode 100644
index 0000000..d49cfd1
--- /dev/null
+++ b/doc/thesis/figures/data/qam_hw_lab.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import utils
+import numpy as np
+
+# get array of samples [channel, synchronized, equalized, locked]
+samples = utils.load_samples(__file__)
+
+# range of samples we want to show
+start = 20e3
+end = start +400
+
+# select every second samples
+select_samples = lambda arr: arr[int(start):int(end):6]
+values = map(select_samples, samples)
+
+# split into imaginary and real parts
+get_parts = lambda v: (np.real(v), np.imag(v))
+parts = [p for v in map(get_parts, values) for p in v]
+
+# zip data and add header
+data = np.array(list(zip(*parts)))
+headers = [
+    "channel_re",      "channel_im",
+    "synchronized_re", "synchronized_im",
+    "equalized_re",    "equalized_im",
+    "locked_re",       "locked_im"
+]
+
+# save to file
+utils.save_to_file(__file__, data, headers)
diff --git a/flowgraphs/qam_hw.grc b/flowgraphs/qam_hw.grc
new file mode 100644
index 0000000..7a1bb63
--- /dev/null
+++ b/flowgraphs/qam_hw.grc
@@ -0,0 +1,1709 @@
+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: qam_hw
+    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: QAM Hardware
+    window_size: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 12.0]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: access_code
+  id: variable
+  parameters:
+    comment: ''
+    value: np.exp(1j * (np.pi * 13 * np.arange(20) ** 20 / 20))
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [32, 348.0]
+    rotation: 0
+    state: true
+- name: access_code_sps
+  id: variable
+  parameters:
+    comment: ''
+    value: np.asarray(np.matmul(np.matrix(access_code).T, np.matrix(np.ones(sps)))).ravel()
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [424, 196.0]
+    rotation: 0
+    state: disabled
+- name: access_code_sps
+  id: variable
+  parameters:
+    comment: ''
+    value: '[(1+0j), (1+0j), (1+0j), (1+0j), (-0.4539904997395467+0.8910065241883679j),
+      (-0.4539904997395467+0.8910065241883679j), (-0.4539904997395467+0.8910065241883679j),
+      (-0.4539904997395467+0.8910065241883679j), (0.30901699445433095+0.9510565162693603j),
+      (0.30901699445433095+0.9510565162693603j), (0.30901699445433095+0.9510565162693603j),
+      (0.30901699445433095+0.9510565162693603j), (-0.45399010831290065+0.8910067236300974j),
+      (-0.45399010831290065+0.8910067236300974j), (-0.45399010831290065+0.8910067236300974j),
+      (-0.45399010831290065+0.8910067236300974j), (0.30910023286329796+0.9510294664435246j),
+      (0.30910023286329796+0.9510294664435246j), (0.30910023286329796+0.9510294664435246j),
+      (0.30910023286329796+0.9510294664435246j), (0.6958765427916561+0.7181614283657487j),
+      (0.6958765427916561+0.7181614283657487j), (0.6958765427916561+0.7181614283657487j),
+      (0.6958765427916561+0.7181614283657487j), (0.6995785030650676+0.7145557487343022j),
+      (0.6995785030650676+0.7145557487343022j), (0.6995785030650676+0.7145557487343022j),
+      (0.6995785030650676+0.7145557487343022j), (-0.8755764602527171+0.4830795609952073j),
+      (-0.8755764602527171+0.4830795609952073j), (-0.8755764602527171+0.4830795609952073j),
+      (-0.8755764602527171+0.4830795609952073j), (-0.8320971948858552-0.5546298389584634j),
+      (-0.8320971948858552-0.5546298389584634j), (-0.8320971948858552-0.5546298389584634j),
+      (-0.8320971948858552-0.5546298389584634j), (0.13124680853227685+0.9913497239874998j),
+      (0.13124680853227685+0.9913497239874998j), (0.13124680853227685+0.9913497239874998j),
+      (0.13124680853227685+0.9913497239874998j), (0.9219105024602736-0.38740292390926256j),
+      (0.9219105024602736-0.38740292390926256j), (0.9219105024602736-0.38740292390926256j),
+      (0.9219105024602736-0.38740292390926256j), (0.9881969645782696-0.15318863925988194j),
+      (0.9881969645782696-0.15318863925988194j), (0.9881969645782696-0.15318863925988194j),
+      (0.9881969645782696-0.15318863925988194j), (-0.5511352729247617-0.8344159100461522j),
+      (-0.5511352729247617-0.8344159100461522j), (-0.5511352729247617-0.8344159100461522j),
+      (-0.5511352729247617-0.8344159100461522j), (-0.24665339430031927+0.9691037628036181j),
+      (-0.24665339430031927+0.9691037628036181j), (-0.24665339430031927+0.9691037628036181j),
+      (-0.24665339430031927+0.9691037628036181j), (-0.44951814008601154-0.8932712027898431j),
+      (-0.44951814008601154-0.8932712027898431j), (-0.44951814008601154-0.8932712027898431j),
+      (-0.44951814008601154-0.8932712027898431j), (-0.23300791854304934-0.9724748376673998j),
+      (-0.23300791854304934-0.9724748376673998j), (-0.23300791854304934-0.9724748376673998j),
+      (-0.23300791854304934-0.9724748376673998j), (1+0j), (1+0j), (1+0j), (1+0j),
+      (0.8559628469680924+0.5170373338650489j), (0.8559628469680924+0.5170373338650489j),
+      (0.8559628469680924+0.5170373338650489j), (0.8559628469680924+0.5170373338650489j),
+      (-0.8354473464520049-0.5495704971214372j), (-0.8354473464520049-0.5495704971214372j),
+      (-0.8354473464520049-0.5495704971214372j), (-0.8354473464520049-0.5495704971214372j),
+      (-0.999246638643493+0.03880921488101298j), (-0.999246638643493+0.03880921488101298j),
+      (-0.999246638643493+0.03880921488101298j), (-0.999246638643493+0.03880921488101298j)]'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 196.0]
+    rotation: 0
+    state: disabled
+- name: excess_bw
+  id: variable
+  parameters:
+    comment: ''
+    value: '0.35'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [336, 1396.0]
+    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, 796.0]
+    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: [216, 436.0]
+    rotation: 0
+    state: true
+- name: nfilts
+  id: variable
+  parameters:
+    comment: ''
+    value: '32'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 1396.0]
+    rotation: 0
+    state: true
+- name: qam_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: 16qam
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [472, 532.0]
+    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: [248, 1172.0]
+    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, 436.0]
+    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: [40, 604.0]
+    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: [1088, 1336.0]
+    rotation: 0
+    state: enabled
+- name: blocks_file_sink_0
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/channel_qam_hw.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1184, 772.0]
+    rotation: 0
+    state: disabled
+- name: blocks_file_sink_1
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/synchronized_qam_hw.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [520, 1324.0]
+    rotation: 0
+    state: disabled
+- name: blocks_file_sink_2
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/equalized_qam_hw.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 1332.0]
+    rotation: 0
+    state: disabled
+- name: blocks_file_sink_3
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/locked_qam_hw.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1336, 1084.0]
+    rotation: 0
+    state: disabled
+- name: blocks_null_source_0
+  id: blocks_null_source
+  parameters:
+    affinity: ''
+    alias: ''
+    bus_structure_source: '[[0,],]'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_outputs: '1'
+    type: byte
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [48, 712.0]
+    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, 1540.0]
+    rotation: 0
+    state: true
+- name: blocks_stream_mux_0
+  id: blocks_stream_mux
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    lengths: '[len(testvec), 4, 0]'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '3'
+    type: byte
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 600.0]
+    rotation: 0
+    state: true
+- name: blocks_stream_mux_1
+  id: blocks_stream_mux
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    lengths: '[len(access_code)*4, len(testvec)//4*sps]'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [728, 528.0]
+    rotation: 0
+    state: disabled
+- 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: [1000, 1552.0]
+    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, 1548.0]
+    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, 508.0]
+    rotation: 0
+    state: true
+- name: blocks_vector_source_x_1
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: complex
+    vector: access_code_sps
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 300.0]
+    rotation: 0
+    state: disabled
+- name: channels_channel_model_0
+  id: channels_channel_model
+  parameters:
+    affinity: ''
+    alias: ''
+    block_tags: 'False'
+    comment: ''
+    epsilon: '1.0'
+    freq_offset: 1e-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, 900.0]
+    rotation: 0
+    state: enabled
+- name: digital_constellation_decoder_cb_0
+  id: digital_constellation_decoder_cb
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    constellation: qam_const
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 1548.0]
+    rotation: 0
+    state: true
+- name: digital_constellation_modulator_0
+  id: digital_constellation_modulator
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    constellation: qam_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: [472, 604.0]
+    rotation: 0
+    state: true
+- name: digital_corr_est_cc_0
+  id: digital_corr_est_cc
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    mark_delay: len(access_code) // 2
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    sps: '1'
+    symbols: access_code
+    threshold: '0.9'
+    threshold_method: digital.THRESHOLD_ABSOLUTE
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 1212.0]
+    rotation: 0
+    state: true
+- name: digital_lms_dd_equalizer_cc_0
+  id: digital_lms_dd_equalizer_cc
+  parameters:
+    affinity: ''
+    alias: ''
+    cnst: qam_const
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    mu: 2e-3
+    num_taps: '15'
+    sps: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [520, 1220.0]
+    rotation: 0
+    state: enabled
+- 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: [248, 1244.0]
+    rotation: 0
+    state: true
+- name: fadingui_ber_0
+  id: fadingui_ber
+  parameters:
+    address: udp://localhost:31415
+    affinity: ''
+    alias: ''
+    comment: ''
+    vgl: testvec + list(np.zeros(4))
+    vlen: frame_len
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1200, 1532.0]
+    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, 788.0]
+    rotation: 0
+    state: disabled
+- name: fadingui_netsink_0
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31416
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1184, 852.0]
+    rotation: 0
+    state: enabled
+- name: fadingui_netsink_1
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31418
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 1156.0]
+    rotation: 0
+    state: enabled
+- name: fadingui_netsink_3
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31419
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1336, 1172.0]
+    rotation: 0
+    state: enabled
+- name: fadingui_netsink_4
+  id: fadingui_netsink
+  parameters:
+    address: udp://localhost:31417
+    affinity: ''
+    alias: ''
+    comment: ''
+    type: complex
+    veclen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [528, 1164.0]
+    rotation: 0
+    state: enabled
+- 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: [1032, 1228.0]
+    rotation: 0
+    state: enabled
+- 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: '"green"'
+    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: '3'
+    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: [1336, 976.0]
+    rotation: 0
+    state: enabled
+- 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: [1320, 1316.0]
+    rotation: 0
+    state: enabled
+- name: root_raised_cosine_filter_0
+  id: root_raised_cosine_filter
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha: excess_bw
+    comment: ''
+    decim: '1'
+    gain: '10'
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    ntaps: int(samp_rate)
+    samp_rate: samp_rate
+    sym_rate: 1 / sps
+    type: fir_filter_ccf
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [472, 380.0]
+    rotation: 0
+    state: disabled
+- name: uhd_usrp_sink_0
+  id: uhd_usrp_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    ant0: TX/RX
+    ant1: TX/RX
+    ant10: TX/RX
+    ant11: TX/RX
+    ant12: TX/RX
+    ant13: TX/RX
+    ant14: TX/RX
+    ant15: TX/RX
+    ant16: TX/RX
+    ant17: TX/RX
+    ant18: TX/RX
+    ant19: TX/RX
+    ant2: TX/RX
+    ant20: TX/RX
+    ant21: TX/RX
+    ant22: TX/RX
+    ant23: TX/RX
+    ant24: TX/RX
+    ant25: TX/RX
+    ant26: TX/RX
+    ant27: TX/RX
+    ant28: TX/RX
+    ant29: TX/RX
+    ant3: TX/RX
+    ant30: TX/RX
+    ant31: TX/RX
+    ant4: TX/RX
+    ant5: TX/RX
+    ant6: TX/RX
+    ant7: TX/RX
+    ant8: TX/RX
+    ant9: TX/RX
+    bw0: '0'
+    bw1: '0'
+    bw10: '0'
+    bw11: '0'
+    bw12: '0'
+    bw13: '0'
+    bw14: '0'
+    bw15: '0'
+    bw16: '0'
+    bw17: '0'
+    bw18: '0'
+    bw19: '0'
+    bw2: '0'
+    bw20: '0'
+    bw21: '0'
+    bw22: '0'
+    bw23: '0'
+    bw24: '0'
+    bw25: '0'
+    bw26: '0'
+    bw27: '0'
+    bw28: '0'
+    bw29: '0'
+    bw3: '0'
+    bw30: '0'
+    bw31: '0'
+    bw4: '0'
+    bw5: '0'
+    bw6: '0'
+    bw7: '0'
+    bw8: '0'
+    bw9: '0'
+    center_freq0: 2.4e9
+    center_freq1: '0'
+    center_freq10: '0'
+    center_freq11: '0'
+    center_freq12: '0'
+    center_freq13: '0'
+    center_freq14: '0'
+    center_freq15: '0'
+    center_freq16: '0'
+    center_freq17: '0'
+    center_freq18: '0'
+    center_freq19: '0'
+    center_freq2: '0'
+    center_freq20: '0'
+    center_freq21: '0'
+    center_freq22: '0'
+    center_freq23: '0'
+    center_freq24: '0'
+    center_freq25: '0'
+    center_freq26: '0'
+    center_freq27: '0'
+    center_freq28: '0'
+    center_freq29: '0'
+    center_freq3: '0'
+    center_freq30: '0'
+    center_freq31: '0'
+    center_freq4: '0'
+    center_freq5: '0'
+    center_freq6: '0'
+    center_freq7: '0'
+    center_freq8: '0'
+    center_freq9: '0'
+    clock_rate: 0e0
+    clock_source0: external
+    clock_source1: ''
+    clock_source2: ''
+    clock_source3: ''
+    clock_source4: ''
+    clock_source5: ''
+    clock_source6: ''
+    clock_source7: ''
+    comment: ''
+    dev_addr: '"serial=309AF59  "'
+    dev_args: '""'
+    gain0: '0.4'
+    gain1: '0'
+    gain10: '0'
+    gain11: '0'
+    gain12: '0'
+    gain13: '0'
+    gain14: '0'
+    gain15: '0'
+    gain16: '0'
+    gain17: '0'
+    gain18: '0'
+    gain19: '0'
+    gain2: '0'
+    gain20: '0'
+    gain21: '0'
+    gain22: '0'
+    gain23: '0'
+    gain24: '0'
+    gain25: '0'
+    gain26: '0'
+    gain27: '0'
+    gain28: '0'
+    gain29: '0'
+    gain3: '0'
+    gain30: '0'
+    gain31: '0'
+    gain4: '0'
+    gain5: '0'
+    gain6: '0'
+    gain7: '0'
+    gain8: '0'
+    gain9: '0'
+    len_tag_name: ''
+    lo_export0: 'False'
+    lo_export1: 'False'
+    lo_export10: 'False'
+    lo_export11: 'False'
+    lo_export12: 'False'
+    lo_export13: 'False'
+    lo_export14: 'False'
+    lo_export15: 'False'
+    lo_export16: 'False'
+    lo_export17: 'False'
+    lo_export18: 'False'
+    lo_export19: 'False'
+    lo_export2: 'False'
+    lo_export20: 'False'
+    lo_export21: 'False'
+    lo_export22: 'False'
+    lo_export23: 'False'
+    lo_export24: 'False'
+    lo_export25: 'False'
+    lo_export26: 'False'
+    lo_export27: 'False'
+    lo_export28: 'False'
+    lo_export29: 'False'
+    lo_export3: 'False'
+    lo_export30: 'False'
+    lo_export31: 'False'
+    lo_export4: 'False'
+    lo_export5: 'False'
+    lo_export6: 'False'
+    lo_export7: 'False'
+    lo_export8: 'False'
+    lo_export9: 'False'
+    lo_source0: internal
+    lo_source1: internal
+    lo_source10: internal
+    lo_source11: internal
+    lo_source12: internal
+    lo_source13: internal
+    lo_source14: internal
+    lo_source15: internal
+    lo_source16: internal
+    lo_source17: internal
+    lo_source18: internal
+    lo_source19: internal
+    lo_source2: internal
+    lo_source20: internal
+    lo_source21: internal
+    lo_source22: internal
+    lo_source23: internal
+    lo_source24: internal
+    lo_source25: internal
+    lo_source26: internal
+    lo_source27: internal
+    lo_source28: internal
+    lo_source29: internal
+    lo_source3: internal
+    lo_source30: internal
+    lo_source31: internal
+    lo_source4: internal
+    lo_source5: internal
+    lo_source6: internal
+    lo_source7: internal
+    lo_source8: internal
+    lo_source9: internal
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    norm_gain0: 'True'
+    norm_gain1: 'False'
+    norm_gain10: 'False'
+    norm_gain11: 'False'
+    norm_gain12: 'False'
+    norm_gain13: 'False'
+    norm_gain14: 'False'
+    norm_gain15: 'False'
+    norm_gain16: 'False'
+    norm_gain17: 'False'
+    norm_gain18: 'False'
+    norm_gain19: 'False'
+    norm_gain2: 'False'
+    norm_gain20: 'False'
+    norm_gain21: 'False'
+    norm_gain22: 'False'
+    norm_gain23: 'False'
+    norm_gain24: 'False'
+    norm_gain25: 'False'
+    norm_gain26: 'False'
+    norm_gain27: 'False'
+    norm_gain28: 'False'
+    norm_gain29: 'False'
+    norm_gain3: 'False'
+    norm_gain30: 'False'
+    norm_gain31: 'False'
+    norm_gain4: 'False'
+    norm_gain5: 'False'
+    norm_gain6: 'False'
+    norm_gain7: 'False'
+    norm_gain8: 'False'
+    norm_gain9: 'False'
+    num_mboards: '1'
+    otw: ''
+    samp_rate: samp_rate
+    sd_spec0: ''
+    sd_spec1: ''
+    sd_spec2: ''
+    sd_spec3: ''
+    sd_spec4: ''
+    sd_spec5: ''
+    sd_spec6: ''
+    sd_spec7: ''
+    show_lo_controls: 'False'
+    start_time: '-1.0'
+    stream_args: ''
+    stream_chans: '[]'
+    sync: sync
+    time_source0: ''
+    time_source1: ''
+    time_source2: ''
+    time_source3: ''
+    time_source4: ''
+    time_source5: ''
+    time_source6: ''
+    time_source7: ''
+    type: fc32
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [592, 868.0]
+    rotation: 0
+    state: true
+- name: uhd_usrp_source_0
+  id: uhd_usrp_source
+  parameters:
+    affinity: ''
+    alias: ''
+    ant0: RX2
+    ant1: RX2
+    ant10: RX2
+    ant11: RX2
+    ant12: RX2
+    ant13: RX2
+    ant14: RX2
+    ant15: RX2
+    ant16: RX2
+    ant17: RX2
+    ant18: RX2
+    ant19: RX2
+    ant2: RX2
+    ant20: RX2
+    ant21: RX2
+    ant22: RX2
+    ant23: RX2
+    ant24: RX2
+    ant25: RX2
+    ant26: RX2
+    ant27: RX2
+    ant28: RX2
+    ant29: RX2
+    ant3: RX2
+    ant30: RX2
+    ant31: RX2
+    ant4: RX2
+    ant5: RX2
+    ant6: RX2
+    ant7: RX2
+    ant8: RX2
+    ant9: RX2
+    bw0: '0'
+    bw1: '0'
+    bw10: '0'
+    bw11: '0'
+    bw12: '0'
+    bw13: '0'
+    bw14: '0'
+    bw15: '0'
+    bw16: '0'
+    bw17: '0'
+    bw18: '0'
+    bw19: '0'
+    bw2: '0'
+    bw20: '0'
+    bw21: '0'
+    bw22: '0'
+    bw23: '0'
+    bw24: '0'
+    bw25: '0'
+    bw26: '0'
+    bw27: '0'
+    bw28: '0'
+    bw29: '0'
+    bw3: '0'
+    bw30: '0'
+    bw31: '0'
+    bw4: '0'
+    bw5: '0'
+    bw6: '0'
+    bw7: '0'
+    bw8: '0'
+    bw9: '0'
+    center_freq0: 2.4e9
+    center_freq1: '0'
+    center_freq10: '0'
+    center_freq11: '0'
+    center_freq12: '0'
+    center_freq13: '0'
+    center_freq14: '0'
+    center_freq15: '0'
+    center_freq16: '0'
+    center_freq17: '0'
+    center_freq18: '0'
+    center_freq19: '0'
+    center_freq2: '0'
+    center_freq20: '0'
+    center_freq21: '0'
+    center_freq22: '0'
+    center_freq23: '0'
+    center_freq24: '0'
+    center_freq25: '0'
+    center_freq26: '0'
+    center_freq27: '0'
+    center_freq28: '0'
+    center_freq29: '0'
+    center_freq3: '0'
+    center_freq30: '0'
+    center_freq31: '0'
+    center_freq4: '0'
+    center_freq5: '0'
+    center_freq6: '0'
+    center_freq7: '0'
+    center_freq8: '0'
+    center_freq9: '0'
+    clock_rate: 0e0
+    clock_source0: external
+    clock_source1: ''
+    clock_source2: ''
+    clock_source3: ''
+    clock_source4: ''
+    clock_source5: ''
+    clock_source6: ''
+    clock_source7: ''
+    comment: ''
+    dc_offs_enb0: '""'
+    dc_offs_enb1: '""'
+    dc_offs_enb10: '""'
+    dc_offs_enb11: '""'
+    dc_offs_enb12: '""'
+    dc_offs_enb13: '""'
+    dc_offs_enb14: '""'
+    dc_offs_enb15: '""'
+    dc_offs_enb16: '""'
+    dc_offs_enb17: '""'
+    dc_offs_enb18: '""'
+    dc_offs_enb19: '""'
+    dc_offs_enb2: '""'
+    dc_offs_enb20: '""'
+    dc_offs_enb21: '""'
+    dc_offs_enb22: '""'
+    dc_offs_enb23: '""'
+    dc_offs_enb24: '""'
+    dc_offs_enb25: '""'
+    dc_offs_enb26: '""'
+    dc_offs_enb27: '""'
+    dc_offs_enb28: '""'
+    dc_offs_enb29: '""'
+    dc_offs_enb3: '""'
+    dc_offs_enb30: '""'
+    dc_offs_enb31: '""'
+    dc_offs_enb4: '""'
+    dc_offs_enb5: '""'
+    dc_offs_enb6: '""'
+    dc_offs_enb7: '""'
+    dc_offs_enb8: '""'
+    dc_offs_enb9: '""'
+    dev_addr: '"serial=309AF6A  "'
+    dev_args: '""'
+    gain0: '1'
+    gain1: '0'
+    gain10: '0'
+    gain11: '0'
+    gain12: '0'
+    gain13: '0'
+    gain14: '0'
+    gain15: '0'
+    gain16: '0'
+    gain17: '0'
+    gain18: '0'
+    gain19: '0'
+    gain2: '0'
+    gain20: '0'
+    gain21: '0'
+    gain22: '0'
+    gain23: '0'
+    gain24: '0'
+    gain25: '0'
+    gain26: '0'
+    gain27: '0'
+    gain28: '0'
+    gain29: '0'
+    gain3: '0'
+    gain30: '0'
+    gain31: '0'
+    gain4: '0'
+    gain5: '0'
+    gain6: '0'
+    gain7: '0'
+    gain8: '0'
+    gain9: '0'
+    iq_imbal_enb0: '""'
+    iq_imbal_enb1: '""'
+    iq_imbal_enb10: '""'
+    iq_imbal_enb11: '""'
+    iq_imbal_enb12: '""'
+    iq_imbal_enb13: '""'
+    iq_imbal_enb14: '""'
+    iq_imbal_enb15: '""'
+    iq_imbal_enb16: '""'
+    iq_imbal_enb17: '""'
+    iq_imbal_enb18: '""'
+    iq_imbal_enb19: '""'
+    iq_imbal_enb2: '""'
+    iq_imbal_enb20: '""'
+    iq_imbal_enb21: '""'
+    iq_imbal_enb22: '""'
+    iq_imbal_enb23: '""'
+    iq_imbal_enb24: '""'
+    iq_imbal_enb25: '""'
+    iq_imbal_enb26: '""'
+    iq_imbal_enb27: '""'
+    iq_imbal_enb28: '""'
+    iq_imbal_enb29: '""'
+    iq_imbal_enb3: '""'
+    iq_imbal_enb30: '""'
+    iq_imbal_enb31: '""'
+    iq_imbal_enb4: '""'
+    iq_imbal_enb5: '""'
+    iq_imbal_enb6: '""'
+    iq_imbal_enb7: '""'
+    iq_imbal_enb8: '""'
+    iq_imbal_enb9: '""'
+    lo_export0: 'False'
+    lo_export1: 'False'
+    lo_export10: 'False'
+    lo_export11: 'False'
+    lo_export12: 'False'
+    lo_export13: 'False'
+    lo_export14: 'False'
+    lo_export15: 'False'
+    lo_export16: 'False'
+    lo_export17: 'False'
+    lo_export18: 'False'
+    lo_export19: 'False'
+    lo_export2: 'False'
+    lo_export20: 'False'
+    lo_export21: 'False'
+    lo_export22: 'False'
+    lo_export23: 'False'
+    lo_export24: 'False'
+    lo_export25: 'False'
+    lo_export26: 'False'
+    lo_export27: 'False'
+    lo_export28: 'False'
+    lo_export29: 'False'
+    lo_export3: 'False'
+    lo_export30: 'False'
+    lo_export31: 'False'
+    lo_export4: 'False'
+    lo_export5: 'False'
+    lo_export6: 'False'
+    lo_export7: 'False'
+    lo_export8: 'False'
+    lo_export9: 'False'
+    lo_source0: internal
+    lo_source1: internal
+    lo_source10: internal
+    lo_source11: internal
+    lo_source12: internal
+    lo_source13: internal
+    lo_source14: internal
+    lo_source15: internal
+    lo_source16: internal
+    lo_source17: internal
+    lo_source18: internal
+    lo_source19: internal
+    lo_source2: internal
+    lo_source20: internal
+    lo_source21: internal
+    lo_source22: internal
+    lo_source23: internal
+    lo_source24: internal
+    lo_source25: internal
+    lo_source26: internal
+    lo_source27: internal
+    lo_source28: internal
+    lo_source29: internal
+    lo_source3: internal
+    lo_source30: internal
+    lo_source31: internal
+    lo_source4: internal
+    lo_source5: internal
+    lo_source6: internal
+    lo_source7: internal
+    lo_source8: internal
+    lo_source9: internal
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    norm_gain0: 'True'
+    norm_gain1: 'False'
+    norm_gain10: 'False'
+    norm_gain11: 'False'
+    norm_gain12: 'False'
+    norm_gain13: 'False'
+    norm_gain14: 'False'
+    norm_gain15: 'False'
+    norm_gain16: 'False'
+    norm_gain17: 'False'
+    norm_gain18: 'False'
+    norm_gain19: 'False'
+    norm_gain2: 'False'
+    norm_gain20: 'False'
+    norm_gain21: 'False'
+    norm_gain22: 'False'
+    norm_gain23: 'False'
+    norm_gain24: 'False'
+    norm_gain25: 'False'
+    norm_gain26: 'False'
+    norm_gain27: 'False'
+    norm_gain28: 'False'
+    norm_gain29: 'False'
+    norm_gain3: 'False'
+    norm_gain30: 'False'
+    norm_gain31: 'False'
+    norm_gain4: 'False'
+    norm_gain5: 'False'
+    norm_gain6: 'False'
+    norm_gain7: 'False'
+    norm_gain8: 'False'
+    norm_gain9: 'False'
+    num_mboards: '1'
+    otw: ''
+    rx_agc0: Disabled
+    rx_agc1: Default
+    rx_agc10: Default
+    rx_agc11: Default
+    rx_agc12: Default
+    rx_agc13: Default
+    rx_agc14: Default
+    rx_agc15: Default
+    rx_agc16: Default
+    rx_agc17: Default
+    rx_agc18: Default
+    rx_agc19: Default
+    rx_agc2: Default
+    rx_agc20: Default
+    rx_agc21: Default
+    rx_agc22: Default
+    rx_agc23: Default
+    rx_agc24: Default
+    rx_agc25: Default
+    rx_agc26: Default
+    rx_agc27: Default
+    rx_agc28: Default
+    rx_agc29: Default
+    rx_agc3: Default
+    rx_agc30: Default
+    rx_agc31: Default
+    rx_agc4: Default
+    rx_agc5: Default
+    rx_agc6: Default
+    rx_agc7: Default
+    rx_agc8: Default
+    rx_agc9: Default
+    samp_rate: samp_rate
+    sd_spec0: ''
+    sd_spec1: ''
+    sd_spec2: ''
+    sd_spec3: ''
+    sd_spec4: ''
+    sd_spec5: ''
+    sd_spec6: ''
+    sd_spec7: ''
+    show_lo_controls: 'False'
+    start_time: '-1.0'
+    stream_args: ''
+    stream_chans: '[]'
+    sync: sync
+    time_source0: ''
+    time_source1: ''
+    time_source2: ''
+    time_source3: ''
+    time_source4: ''
+    time_source5: ''
+    time_source6: ''
+    time_source7: ''
+    type: fc32
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [912, 852.0]
+    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: [1048, 628.0]
+    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: [1184, 916.0]
+    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: [1336, 1228.0]
+    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, 1548.0]
+    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, 1292.0]
+    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, 940.0]
+    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_null_source_0, '0', blocks_stream_mux_0, '2']
+- [blocks_repack_bits_bb_0, '0', blocks_stream_to_vector_0, '0']
+- [blocks_stream_mux_0, '0', digital_constellation_modulator_0, '0']
+- [blocks_stream_mux_1, '0', virtual_sink_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_vector_source_x_0, '0', blocks_stream_mux_0, '0']
+- [blocks_vector_source_x_1, '0', root_raised_cosine_filter_0, '0']
+- [channels_channel_model_0, '0', uhd_usrp_sink_0, '0']
+- [digital_constellation_decoder_cb_0, '0', blocks_tagged_stream_align_0, '0']
+- [digital_constellation_modulator_0, '0', blocks_stream_mux_1, '1']
+- [digital_constellation_modulator_0, '0', virtual_sink_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_lms_dd_equalizer_cc_0, '0', blocks_file_sink_2, '0']
+- [digital_lms_dd_equalizer_cc_0, '0', digital_corr_est_cc_0, '0']
+- [digital_lms_dd_equalizer_cc_0, '0', fadingui_netsink_1, '0']
+- [digital_lms_dd_equalizer_cc_0, '0', qtgui_const_sink_x_0, '1']
+- [digital_pfb_clock_sync_xxx_0, '0', blocks_file_sink_1, '0']
+- [digital_pfb_clock_sync_xxx_0, '0', digital_lms_dd_equalizer_cc_0, '0']
+- [digital_pfb_clock_sync_xxx_0, '0', fadingui_netsink_4, '0']
+- [digital_pfb_clock_sync_xxx_0, '0', qtgui_const_sink_x_0, '0']
+- [fadingui_datasource_0, '0', digital_constellation_modulator_0, '0']
+- [fadingui_phasecorrection_0, '0', blocks_file_sink_3, '0']
+- [fadingui_phasecorrection_0, '0', fadingui_netsink_3, '0']
+- [fadingui_phasecorrection_0, '0', qtgui_const_sink_x_0, '2']
+- [fadingui_phasecorrection_0, '0', virtual_sink_2, '0']
+- [root_raised_cosine_filter_0, '0', blocks_stream_mux_1, '0']
+- [uhd_usrp_source_0, '0', blocks_file_sink_0, '0']
+- [uhd_usrp_source_0, '0', fadingui_netsink_0, '0']
+- [uhd_usrp_source_0, '0', virtual_sink_1, '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/qam_hw.py b/flowgraphs/qam_hw.py
new file mode 100755
index 0000000..d49b8e7
--- /dev/null
+++ b/flowgraphs/qam_hw.py
@@ -0,0 +1,395 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#
+# SPDX-License-Identifier: GPL-3.0
+#
+# GNU Radio Python Flow Graph
+# Title: QAM Hardware
+# 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
+from gnuradio import uhd
+import time
+import fadingui
+import numpy as np
+
+from gnuradio import qtgui
+
+class qam_hw(gr.top_block, Qt.QWidget):
+
+    def __init__(self):
+        gr.top_block.__init__(self, "QAM Hardware")
+        Qt.QWidget.__init__(self)
+        self.setWindowTitle("QAM Hardware")
+        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", "qam_hw")
+
+        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.qam_const = qam_const = digital.constellation_16qam().base()
+        self.frame_len = frame_len = len(testvec) +4
+        self.access_code = access_code = np.exp(1j * (np.pi * 13 * np.arange(20) ** 20 / 20))
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.uhd_usrp_source_0 = uhd.usrp_source(
+            ",".join(("serial=309AF6A  ", "")),
+            uhd.stream_args(
+                cpu_format="fc32",
+                args='',
+                channels=list(range(0,1)),
+            ),
+        )
+        self.uhd_usrp_source_0.set_clock_source('external', 0)
+        self.uhd_usrp_source_0.set_center_freq(2.4e9, 0)
+        self.uhd_usrp_source_0.set_rx_agc(False, 0)
+        self.uhd_usrp_source_0.set_normalized_gain(1, 0)
+        self.uhd_usrp_source_0.set_antenna('RX2', 0)
+        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
+        self.uhd_usrp_source_0.set_time_unknown_pps(uhd.time_spec())
+        self.uhd_usrp_sink_0 = uhd.usrp_sink(
+            ",".join(("serial=309AF59  ", "")),
+            uhd.stream_args(
+                cpu_format="fc32",
+                args='',
+                channels=list(range(0,1)),
+            ),
+            '',
+        )
+        self.uhd_usrp_sink_0.set_clock_source('external', 0)
+        self.uhd_usrp_sink_0.set_center_freq(2.4e9, 0)
+        self.uhd_usrp_sink_0.set_normalized_gain(0.4, 0)
+        self.uhd_usrp_sink_0.set_antenna('TX/RX', 0)
+        self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
+        self.uhd_usrp_sink_0.set_time_unknown_pps(uhd.time_spec())
+        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
+            3 #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", "green", "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(3):
+            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_netsink_4 = fadingui.netsink(address='udp://localhost:31417', dtype="complex", vlen=1)
+        self.fadingui_netsink_3 = fadingui.netsink(address='udp://localhost:31419', dtype="complex", vlen=1)
+        self.fadingui_netsink_1 = fadingui.netsink(address='udp://localhost:31418', dtype="complex", vlen=1)
+        self.fadingui_netsink_0 = fadingui.netsink(address='udp://localhost:31416', dtype="complex", vlen=1)
+        self.fadingui_ber_0 = fadingui.ber(vgl=testvec + list(np.zeros(4)), vlen=frame_len,address='udp://localhost:31415')
+        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_lms_dd_equalizer_cc_0 = digital.lms_dd_equalizer_cc(15, 2e-3, 1, qam_const)
+        self.digital_corr_est_cc_0 = digital.corr_est_cc(access_code, 1, len(access_code) // 2, 0.9, digital.THRESHOLD_ABSOLUTE)
+        self.digital_constellation_modulator_0 = digital.generic_mod(
+            constellation=qam_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(qam_const)
+        self.channels_channel_model_0 = channels.channel_model(
+            noise_voltage=100e-3,
+            frequency_offset=1e-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_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, 0])
+        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(2, 8, "", False, gr.GR_LSB_FIRST)
+        self.blocks_null_source_0 = blocks.null_source(gr.sizeof_char*1)
+        self.blocks_file_sink_3 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/locked_qam_hw.dat', False)
+        self.blocks_file_sink_3.set_unbuffered(False)
+        self.blocks_file_sink_2 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/equalized_qam_hw.dat', False)
+        self.blocks_file_sink_2.set_unbuffered(False)
+        self.blocks_file_sink_1 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/synchronized_qam_hw.dat', False)
+        self.blocks_file_sink_1.set_unbuffered(False)
+        self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/channel_qam_hw.dat', False)
+        self.blocks_file_sink_0.set_unbuffered(False)
+        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_null_source_0, 0), (self.blocks_stream_mux_0, 2))
+        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_vector_source_x_0, 0), (self.blocks_stream_mux_0, 0))
+        self.connect((self.channels_channel_model_0, 0), (self.uhd_usrp_sink_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.channels_channel_model_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_lms_dd_equalizer_cc_0, 0), (self.blocks_file_sink_2, 0))
+        self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.digital_corr_est_cc_0, 0))
+        self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.fadingui_netsink_1, 0))
+        self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.qtgui_const_sink_x_0, 1))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.blocks_file_sink_1, 0))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_lms_dd_equalizer_cc_0, 0))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.fadingui_netsink_4, 0))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.qtgui_const_sink_x_0, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.blocks_file_sink_3, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.digital_constellation_decoder_cb_0, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.fadingui_netsink_3, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.qtgui_const_sink_x_0, 2))
+        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_file_sink_0, 0))
+        self.connect((self.uhd_usrp_source_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
+        self.connect((self.uhd_usrp_source_0, 0), (self.fadingui_netsink_0, 0))
+
+
+    def closeEvent(self, event):
+        self.settings = Qt.QSettings("GNU Radio", "qam_hw")
+        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.qtgui_time_sink_x_0.set_samp_rate(self.samp_rate / self.sps)
+        self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
+        self.uhd_usrp_source_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_qam_const(self):
+        return self.qam_const
+
+    def set_qam_const(self, qam_const):
+        self.qam_const = qam_const
+
+    def get_frame_len(self):
+        return self.frame_len
+
+    def set_frame_len(self, frame_len):
+        self.frame_len = frame_len
+
+    def get_access_code(self):
+        return self.access_code
+
+    def set_access_code(self, access_code):
+        self.access_code = access_code
+        self.digital_corr_est_cc_0.set_mark_delay(len(self.access_code) // 2)
+
+
+
+
+
+def main(top_block_cls=qam_hw, 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/flowgraphs/qam_sim.grc b/flowgraphs/qam_sim.grc
index 472e9d4..f5724be 100644
--- a/flowgraphs/qam_sim.grc
+++ b/flowgraphs/qam_sim.grc
@@ -125,7 +125,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [336, 1332.0]
+    coordinate: [336, 1388.0]
     rotation: 0
     state: true
 - name: frame
@@ -163,7 +163,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [256, 1332.0]
+    coordinate: [256, 1388.0]
     rotation: 0
     state: true
 - name: qam_const
@@ -193,7 +193,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [432, 1332.0]
+    coordinate: [432, 1388.0]
     rotation: 0
     state: true
 - name: samp_rate
@@ -265,9 +265,81 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1088, 1272.0]
+    coordinate: [1088, 1320.0]
     rotation: 0
     state: enabled
+- name: blocks_file_sink_0
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/channel_qam_sim.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [984, 852.0]
+    rotation: 0
+    state: true
+- name: blocks_file_sink_1
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/synchronized_qam_sim.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [520, 1308.0]
+    rotation: 0
+    state: true
+- name: blocks_file_sink_2
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/equalized_qam_sim.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 1316.0]
+    rotation: 0
+    state: true
+- name: blocks_file_sink_3
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: data/locked_qam_sim.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1336, 1060.0]
+    rotation: 0
+    state: true
 - name: blocks_null_source_0
   id: blocks_null_source
   parameters:
@@ -304,7 +376,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [768, 1476.0]
+    coordinate: [768, 1532.0]
     rotation: 0
     state: true
 - name: blocks_stream_mux_0
@@ -360,7 +432,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1000, 1488.0]
+    coordinate: [1000, 1544.0]
     rotation: 0
     state: true
 - name: blocks_tagged_stream_align_0
@@ -378,7 +450,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [496, 1484.0]
+    coordinate: [496, 1540.0]
     rotation: 0
     state: true
 - name: blocks_throttle_0
@@ -497,7 +569,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [256, 1484.0]
+    coordinate: [256, 1540.0]
     rotation: 0
     state: true
 - name: digital_constellation_modulator_0
@@ -538,7 +610,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [792, 1148.0]
+    coordinate: [792, 1204.0]
     rotation: 0
     state: true
 - name: digital_lms_dd_equalizer_cc_0
@@ -557,7 +629,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [520, 1156.0]
+    coordinate: [520, 1212.0]
     rotation: 0
     state: enabled
 - name: digital_pfb_clock_sync_xxx_0
@@ -580,7 +652,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [248, 1180.0]
+    coordinate: [248, 1236.0]
     rotation: 0
     state: true
 - name: fadingui_ber_0
@@ -596,7 +668,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1200, 1468.0]
+    coordinate: [1200, 1524.0]
     rotation: 0
     state: true
 - name: fadingui_datasource_0
@@ -663,7 +735,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [800, 1100.0]
+    coordinate: [800, 1156.0]
     rotation: 0
     state: enabled
 - name: fadingui_netsink_3
@@ -679,7 +751,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1280, 1100.0]
+    coordinate: [1336, 1156.0]
     rotation: 0
     state: enabled
 - name: fadingui_netsink_4
@@ -695,7 +767,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [528, 1100.0]
+    coordinate: [528, 1156.0]
     rotation: 0
     state: enabled
 - name: fadingui_phasecorrection_0
@@ -711,7 +783,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1032, 1164.0]
+    coordinate: [1032, 1220.0]
     rotation: 0
     state: enabled
 - name: import_0
@@ -816,7 +888,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1304, 984.0]
+    coordinate: [1336, 952.0]
     rotation: 0
     state: enabled
 - name: qtgui_time_sink_x_0
@@ -913,7 +985,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1320, 1252.0]
+    coordinate: [1320, 1300.0]
     rotation: 0
     state: enabled
 - name: root_raised_cosine_filter_0
@@ -975,7 +1047,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1336, 1164.0]
+    coordinate: [1336, 1220.0]
     rotation: 0
     state: true
 - name: virtual_source_0
@@ -988,7 +1060,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [48, 1484.0]
+    coordinate: [48, 1540.0]
     rotation: 0
     state: true
 - name: virtual_source_1
@@ -1001,7 +1073,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [48, 1228.0]
+    coordinate: [48, 1284.0]
     rotation: 0
     state: true
 - name: virtual_source_2
@@ -1032,6 +1104,7 @@ connections:
 - [blocks_vector_source_x_1, '0', root_raised_cosine_filter_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', blocks_file_sink_0, '0']
 - [channels_selective_fading_model_0, '0', fadingui_netsink_0, '0']
 - [channels_selective_fading_model_0, '0', virtual_sink_1, '0']
 - [digital_constellation_decoder_cb_0, '0', blocks_tagged_stream_align_0, '0']
@@ -1039,15 +1112,19 @@ connections:
 - [digital_constellation_modulator_0, '0', blocks_throttle_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_lms_dd_equalizer_cc_0, '0', blocks_file_sink_2, '0']
 - [digital_lms_dd_equalizer_cc_0, '0', digital_corr_est_cc_0, '0']
 - [digital_lms_dd_equalizer_cc_0, '0', fadingui_netsink_1, '0']
 - [digital_lms_dd_equalizer_cc_0, '0', qtgui_const_sink_x_0, '1']
+- [digital_pfb_clock_sync_xxx_0, '0', blocks_file_sink_1, '0']
 - [digital_pfb_clock_sync_xxx_0, '0', digital_lms_dd_equalizer_cc_0, '0']
 - [digital_pfb_clock_sync_xxx_0, '0', fadingui_netsink_4, '0']
 - [digital_pfb_clock_sync_xxx_0, '0', qtgui_const_sink_x_0, '0']
 - [fadingui_datasource_0, '0', digital_constellation_modulator_0, '0']
+- [fadingui_multipath_fading_0, '0', blocks_file_sink_0, '0']
 - [fadingui_multipath_fading_0, '0', fadingui_netsink_0, '0']
 - [fadingui_multipath_fading_0, '0', virtual_sink_1, '0']
+- [fadingui_phasecorrection_0, '0', blocks_file_sink_3, '0']
 - [fadingui_phasecorrection_0, '0', fadingui_netsink_3, '0']
 - [fadingui_phasecorrection_0, '0', qtgui_const_sink_x_0, '2']
 - [fadingui_phasecorrection_0, '0', virtual_sink_2, '0']
diff --git a/flowgraphs/qam_sim.py b/flowgraphs/qam_sim.py
index 4d65f2c..d3b6580 100755
--- a/flowgraphs/qam_sim.py
+++ b/flowgraphs/qam_sim.py
@@ -210,6 +210,14 @@ class qam_sim(gr.top_block, Qt.QWidget):
         self.blocks_stream_mux_0 = blocks.stream_mux(gr.sizeof_char*1, [len(testvec), 4, 0])
         self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(2, 8, "", False, gr.GR_LSB_FIRST)
         self.blocks_null_source_0 = blocks.null_source(gr.sizeof_char*1)
+        self.blocks_file_sink_3 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/locked_qam_sim.dat', False)
+        self.blocks_file_sink_3.set_unbuffered(False)
+        self.blocks_file_sink_2 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/equalized_qam_sim.dat', False)
+        self.blocks_file_sink_2.set_unbuffered(False)
+        self.blocks_file_sink_1 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/synchronized_qam_sim.dat', False)
+        self.blocks_file_sink_1.set_unbuffered(False)
+        self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/channel_qam_sim.dat', False)
+        self.blocks_file_sink_0.set_unbuffered(False)
         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)
 
@@ -228,18 +236,22 @@ class qam_sim(gr.top_block, Qt.QWidget):
         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.channels_selective_fading_model_0, 0))
+        self.connect((self.channels_selective_fading_model_0, 0), (self.blocks_file_sink_0, 0))
         self.connect((self.channels_selective_fading_model_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
         self.connect((self.channels_selective_fading_model_0, 0), (self.fadingui_netsink_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_lms_dd_equalizer_cc_0, 0), (self.blocks_file_sink_2, 0))
         self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.digital_corr_est_cc_0, 0))
         self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.fadingui_netsink_1, 0))
         self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.qtgui_const_sink_x_0, 1))
+        self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.blocks_file_sink_1, 0))
         self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_lms_dd_equalizer_cc_0, 0))
         self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.fadingui_netsink_4, 0))
         self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.qtgui_const_sink_x_0, 0))
+        self.connect((self.fadingui_phasecorrection_0, 0), (self.blocks_file_sink_3, 0))
         self.connect((self.fadingui_phasecorrection_0, 0), (self.digital_constellation_decoder_cb_0, 0))
         self.connect((self.fadingui_phasecorrection_0, 0), (self.fadingui_netsink_3, 0))
         self.connect((self.fadingui_phasecorrection_0, 0), (self.qtgui_const_sink_x_0, 2))