diff options
Diffstat (limited to '')
| -rwxr-xr-x | flowgraphs/qam_sim.py | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/flowgraphs/qam_sim.py b/flowgraphs/qam_sim.py new file mode 100755 index 0000000..9f22572 --- /dev/null +++ b/flowgraphs/qam_sim.py @@ -0,0 +1,352 @@ +#!/usr/bin/env python3 +# -*- coding: utf-8 -*- + +# +# SPDX-License-Identifier: GPL-3.0 +# +# GNU Radio Python Flow Graph +# Title: QAM 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 qam_sim(gr.top_block, Qt.QWidget): + + def __init__(self): + gr.top_block.__init__(self, "QAM Sim") + Qt.QWidget.__init__(self) + self.setWindowTitle("QAM 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", "qam_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.qam_const = qam_const = digital.constellation_16qam().base() + self.frame_len = frame_len = len(testvec) +4 + self.carrier_freq = carrier_freq = 2.4e9 + self.access_code_symbols = access_code_symbols = [(-0.31622776601683794-0.31622776601683794j), (-0.31622776601683794+0.31622776601683794j), (-0.9486832980505138-0.9486832980505138j), (-0.9486832980505138-0.31622776601683794j)] + + ################################################## + # 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 + 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", "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(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_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_lms_dd_equalizer_cc_0 = digital.lms_dd_equalizer_cc(2, 5e-3, 1, qam_const) + 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=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=0, + 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, 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_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_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_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.digital_corr_est_cc_0, 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.digital_lms_dd_equalizer_cc_0, 0)) + self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.qtgui_const_sink_x_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, 2)) + + + def closeEvent(self, event): + self.settings = Qt.QSettings("GNU Radio", "qam_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_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_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=qam_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() |