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-rwxr-xr-xflowgraphs/qam_sim.py352
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()