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-rw-r--r--flowgraphs/qpsk_hw.grc12
-rwxr-xr-xflowgraphs/qpsk_hw.py4
-rw-r--r--flowgraphs/qpsk_sim.grc4
-rwxr-xr-xflowgraphs/qpsk_sim.py12
4 files changed, 10 insertions, 22 deletions
diff --git a/flowgraphs/qpsk_hw.grc b/flowgraphs/qpsk_hw.grc
index 2ebc340..a0d6872 100644
--- a/flowgraphs/qpsk_hw.grc
+++ b/flowgraphs/qpsk_hw.grc
@@ -131,7 +131,7 @@ blocks:
id: variable
parameters:
comment: ''
- value: 1e6
+ value: 5e5
states:
bus_sink: false
bus_source: false
@@ -361,7 +361,7 @@ blocks:
minoutbuf: '0'
sps: '1'
symbols: access_code_symbols
- threshold: '0.85'
+ threshold: '0.7'
threshold_method: digital.THRESHOLD_ABSOLUTE
states:
bus_sink: false
@@ -386,7 +386,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [520, 1100.0]
+ coordinate: [520, 1084.0]
rotation: 0
state: enabled
- name: digital_pfb_clock_sync_xxx_0
@@ -424,7 +424,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1184, 1300.0]
+ coordinate: [1184, 1292.0]
rotation: 0
state: true
- name: fadingui_datasource_0
@@ -1000,7 +1000,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [312, 692.0]
+ coordinate: [336, 684.0]
rotation: 0
state: true
- name: uhd_usrp_source_0
@@ -1450,7 +1450,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [56, 764.0]
+ coordinate: [80, 756.0]
rotation: 0
state: true
diff --git a/flowgraphs/qpsk_hw.py b/flowgraphs/qpsk_hw.py
index eb6bf70..9db06a3 100755
--- a/flowgraphs/qpsk_hw.py
+++ b/flowgraphs/qpsk_hw.py
@@ -81,7 +81,7 @@ class qpsk_hw(gr.top_block, Qt.QWidget):
self.sps = sps = 4
self.nfilts = nfilts = 32
self.excess_bw = excess_bw = 0.35
- self.samp_rate = samp_rate = 1e6
+ self.samp_rate = samp_rate = 5e5
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
@@ -210,7 +210,7 @@ class qpsk_hw(gr.top_block, Qt.QWidget):
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_lms_dd_equalizer_cc_0 = digital.lms_dd_equalizer_cc(15, 3e-3, 1, qpsk_const)
- self.digital_corr_est_cc_0 = digital.corr_est_cc(access_code_symbols, 1, len(access_code_symbols) // 2, 0.85, digital.THRESHOLD_ABSOLUTE)
+ self.digital_corr_est_cc_0 = digital.corr_est_cc(access_code_symbols, 1, len(access_code_symbols) // 2, 0.7, digital.THRESHOLD_ABSOLUTE)
self.digital_constellation_modulator_0 = digital.generic_mod(
constellation=qpsk_const,
differential=False,
diff --git a/flowgraphs/qpsk_sim.grc b/flowgraphs/qpsk_sim.grc
index 7be9ec8..a8dd485 100644
--- a/flowgraphs/qpsk_sim.grc
+++ b/flowgraphs/qpsk_sim.grc
@@ -366,7 +366,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [600, 572.0]
+ coordinate: [568, 548.0]
rotation: 0
state: disabled
- name: digital_cma_equalizer_cc_0
@@ -816,7 +816,7 @@ blocks:
bus_structure: null
coordinate: [1248, 1060.0]
rotation: 0
- state: disabled
+ state: enabled
- name: virtual_sink_0
id: virtual_sink
parameters:
diff --git a/flowgraphs/qpsk_sim.py b/flowgraphs/qpsk_sim.py
index b633bba..1e00180 100755
--- a/flowgraphs/qpsk_sim.py
+++ b/flowgraphs/qpsk_sim.py
@@ -47,11 +47,6 @@ class qpsk_sim(gr.top_block):
# Blocks
##################################################
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_0 = fadingui.netsink(address='udp://localhost:31415', dtype="float", vlen=1)
- self.fadingui_netsink_0 = fadingui.netsink(address='udp://localhost:31416', dtype="complex", vlen=1)
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,address='udp://localhost:31420')
self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, 2 * np.pi / 100, rrc_taps, 32, 16, 1.5, 1)
@@ -79,7 +74,6 @@ class qpsk_sim(gr.top_block):
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)
@@ -88,7 +82,6 @@ class qpsk_sim(gr.top_block):
# 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.fadingui_netsink_0_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))
@@ -97,17 +90,12 @@ class qpsk_sim(gr.top_block):
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_cma_equalizer_cc_0, 0), (self.fadingui_netsink_1, 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.digital_pfb_clock_sync_xxx_0, 0), (self.fadingui_netsink_4, 0))
self.connect((self.fadingui_multipath_fading_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
- self.connect((self.fadingui_multipath_fading_0, 0), (self.fadingui_netsink_0, 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))
def get_testvec(self):