diff options
Diffstat (limited to 'simulation/QAM_Fading/qam_fading.py')
| -rwxr-xr-x | simulation/QAM_Fading/qam_fading.py | 81 |
1 files changed, 75 insertions, 6 deletions
diff --git a/simulation/QAM_Fading/qam_fading.py b/simulation/QAM_Fading/qam_fading.py index 30f2262..c6116f4 100755 --- a/simulation/QAM_Fading/qam_fading.py +++ b/simulation/QAM_Fading/qam_fading.py @@ -29,6 +29,7 @@ from gnuradio import blocks import numpy from gnuradio import channels from gnuradio import digital +from gnuradio import filter from gnuradio import gr import sys import signal @@ -36,6 +37,7 @@ from argparse import ArgumentParser from gnuradio.eng_arg import eng_float, intx from gnuradio import eng_notation from gnuradio.qtgui import Range, RangeWidget +import numpy as np from gnuradio import qtgui @@ -75,20 +77,23 @@ class qam_fading(gr.top_block, Qt.QWidget): ################################################## # Variables ################################################## - self.sps = sps = 4 + self.sps = sps = 2 self.nfilts = nfilts = 32 self.excess_bw = excess_bw = 350e-3 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.testvec = testvec = [0x1f, 0x35] + [0x12, 0xe3, 0x9b, 0xee, 0x84, 0x23, 0x41, 0xf3] + self.samp_rate = samp_rate = 64000 self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts) self.phase_bw = phase_bw = 2 * 3.141592653589793 / 100 self.noise_volt = noise_volt = 0.0001 self.freq_offset = freq_offset = 0 + self.fc = fc = 1 self.eq_ntaps = eq_ntaps = 15 self.eq_mod = eq_mod = 1 self.eq_gain = eq_gain = .01 - self.const = const = digital.constellation_qpsk().base() + self.const = const = digital.constellation_calcdist([-1-1j, -1+1j, 1+1j, 1-1j], [0, 1, 3, 2], + 4, 1).base() self.chn_taps = chn_taps = [1.0 + 0.0j, ] ################################################## @@ -158,6 +163,13 @@ class qam_fading(gr.top_block, Qt.QWidget): self.params_grid_layout_0.setRowStretch(r, 1) for c in range(0, 1): self.params_grid_layout_0.setColumnStretch(c, 1) + self._fc_range = Range(0, 1000000000, 1, 1, 200) + self._fc_win = RangeWidget(self._fc_range, self.set_fc, 'fc', "counter_slider", int) + self.params_grid_layout_0.addWidget(self._fc_win, 1, 2, 1, 1) + for r in range(1, 2): + self.params_grid_layout_0.setRowStretch(r, 1) + for c in range(2, 3): + 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) self.params_grid_layout_1.addWidget(self._eq_gain_win, 0, 0, 1, 1) @@ -260,6 +272,46 @@ class qam_fading(gr.top_block, Qt.QWidget): 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_3 = qtgui.const_sink_c( + 1024, #size + "", #name + 1 #number of inputs + ) + self.qtgui_const_sink_x_3.set_update_time(0.10) + self.qtgui_const_sink_x_3.set_y_axis(-2, 2) + self.qtgui_const_sink_x_3.set_x_axis(-2, 2) + self.qtgui_const_sink_x_3.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "") + self.qtgui_const_sink_x_3.enable_autoscale(False) + self.qtgui_const_sink_x_3.enable_grid(False) + self.qtgui_const_sink_x_3.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_3.set_line_label(i, "Data {0}".format(i)) + else: + self.qtgui_const_sink_x_3.set_line_label(i, labels[i]) + self.qtgui_const_sink_x_3.set_line_width(i, widths[i]) + self.qtgui_const_sink_x_3.set_line_color(i, colors[i]) + self.qtgui_const_sink_x_3.set_line_style(i, styles[i]) + self.qtgui_const_sink_x_3.set_line_marker(i, markers[i]) + self.qtgui_const_sink_x_3.set_line_alpha(i, alphas[i]) + + self._qtgui_const_sink_x_3_win = sip.wrapinstance(self.qtgui_const_sink_x_3.pyqwidget(), Qt.QWidget) + self.top_grid_layout.addWidget(self._qtgui_const_sink_x_3_win) self.qtgui_const_sink_x_2 = qtgui.const_sink_c( 1024, #size "Locked", #name @@ -437,7 +489,7 @@ class qam_fading(gr.top_block, Qt.QWidget): for c in range(0, 1): self.plots_grid_layout_0.setColumnStretch(c, 1) self.digital_pfb_clock_sync_xxx_0_0 = digital.pfb_clock_sync_ccf(sps , timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 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, 1) + self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps , timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 1) self.digital_map_bb_0_0 = digital.map_bb([0, 1, 3, 2]) self.digital_map_bb_0 = digital.map_bb([0, 1, 3, 2]) self.digital_diff_decoder_bb_0_0 = digital.diff_decoder_bb(4) @@ -456,7 +508,7 @@ class qam_fading(gr.top_block, Qt.QWidget): self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(const) self.digital_cma_equalizer_cc_0_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, 2) self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, 2) - self.channels_selective_fading_model_0 = channels.selective_fading_model( 8, 0, True, 4, 0, (0,0.3e-6), (1,0.39), 3 ) + self.channels_selective_fading_model_0 = channels.selective_fading_model( 8, ((4*fc)/(3*10e8))/samp_rate, False, 4, 0, (0,2e-5/samp_rate), (1,0.12), 8 ) self.channels_channel_model_0 = channels.channel_model( noise_voltage=noise_volt, frequency_offset=freq_offset, @@ -472,7 +524,7 @@ class qam_fading(gr.top_block, Qt.QWidget): self.blocks_char_to_float_0_1 = blocks.char_to_float(1, 1) 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) + self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 255, 500000))), True) @@ -503,6 +555,7 @@ class qam_fading(gr.top_block, Qt.QWidget): self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_diff_decoder_bb_0, 0)) self.connect((self.digital_constellation_decoder_cb_0_0, 0), (self.digital_diff_decoder_bb_0_0, 0)) self.connect((self.digital_constellation_modulator_0, 0), (self.blocks_throttle_0, 0)) + self.connect((self.digital_constellation_modulator_0, 0), (self.qtgui_const_sink_x_3, 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_costas_loop_cc_0_0, 0), (self.digital_constellation_decoder_cb_0_0, 0)) @@ -558,12 +611,20 @@ class qam_fading(gr.top_block, Qt.QWidget): self.time_offset = time_offset self.channels_channel_model_0.set_timing_offset(self.time_offset) + def get_testvec(self): + return self.testvec + + def set_testvec(self, testvec): + self.testvec = testvec + 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.blocks_throttle_0_0.set_sample_rate(self.samp_rate) + self.channels_selective_fading_model_0.set_fDTs(((4*self.fc)/(3*10e8))/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) @@ -574,6 +635,7 @@ class qam_fading(gr.top_block, Qt.QWidget): self.rrc_taps = rrc_taps self.digital_pfb_clock_sync_xxx_0.update_taps(self.rrc_taps) self.digital_pfb_clock_sync_xxx_0_0.update_taps(self.rrc_taps) + self.fir_filter_xxx_0.set_taps(self.rrc_taps) def get_phase_bw(self): return self.phase_bw @@ -597,6 +659,13 @@ class qam_fading(gr.top_block, Qt.QWidget): self.freq_offset = freq_offset self.channels_channel_model_0.set_frequency_offset(self.freq_offset) + def get_fc(self): + return self.fc + + def set_fc(self, fc): + self.fc = fc + self.channels_selective_fading_model_0.set_fDTs(((4*self.fc)/(3*10e8))/self.samp_rate) + def get_eq_ntaps(self): return self.eq_ntaps |