From 58915e7c595b8acf4cc33ca1ff4c04fa2522ba10 Mon Sep 17 00:00:00 2001 From: Tom Rondeau <trondeau@vt.edu> Date: Sun, 24 Jul 2011 14:26:07 -0400 Subject: digital: moving mpsk_receiver from gnuradio-core to gr-digital. Added QA code for it. --- gr-digital/python/qa_mpsk_receiver.py | 123 ++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 gr-digital/python/qa_mpsk_receiver.py (limited to 'gr-digital/python/qa_mpsk_receiver.py') diff --git a/gr-digital/python/qa_mpsk_receiver.py b/gr-digital/python/qa_mpsk_receiver.py new file mode 100644 index 0000000000..7e9a76e1f2 --- /dev/null +++ b/gr-digital/python/qa_mpsk_receiver.py @@ -0,0 +1,123 @@ +#!/usr/bin/env python +# +# Copyright 2011 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gr_unittest +import digital_swig, psk2 +import random, cmath + +class test_mpsk_receiver(gr_unittest.TestCase): + + def setUp (self): + self.tb = gr.top_block () + + def tearDown (self): + self.tb = None + + def test01 (self): + # Test BPSK sync + M = 2 + theta = 0 + alpha = 0.1 + beta = 0.25*alpha*alpha + fmin = -0.5 + fmax = 0.5 + mu = 0.25 + gain_mu = 0.01 + omega = 2 + gain_omega = 0.001 + omega_rel = 0.001 + + self.test = digital_swig.mpsk_receiver_cc(M, theta, alpha, beta, + fmin, fmax, mu, gain_mu, + omega, gain_omega, + omega_rel) + + data = 1000*[complex(1,0), complex(1,0), complex(-1,0), complex(-1,0)] + self.src = gr.vector_source_c(data, False) + self.snk = gr.vector_sink_c() + + self.tb.connect(self.src, self.test, self.snk) + self.tb.run() + + expected_result = 1000*[complex(-0.5,0), complex(0.5,0)] + dst_data = self.snk.data() + + # Only compare last Ncmp samples + Ncmp = 100 + len_e = len(expected_result) + len_d = len(dst_data) + expected_result = expected_result[len_e - Ncmp:] + dst_data = dst_data[len_d - Ncmp:] + + #print expected_result + #print dst_data + + self.assertComplexTuplesAlmostEqual (expected_result, dst_data, 1) + + + def test02 (self): + # Test QPSK sync + M = 4 + theta = 0 + alpha = 0.1 + beta = 0.25*alpha*alpha + fmin = -0.5 + fmax = 0.5 + mu = 0.25 + gain_mu = 0.01 + omega = 2 + gain_omega = 0.001 + omega_rel = 0.001 + + self.test = digital_swig.mpsk_receiver_cc(M, theta, alpha, beta, + fmin, fmax, mu, gain_mu, + omega, gain_omega, + omega_rel) + + data = 1000*[complex( 0.707, 0.707), complex( 0.707, 0.707), + complex(-0.707, 0.707), complex(-0.707, 0.707), + complex(-0.707, -0.707), complex(-0.707, -0.707), + complex( 0.707, -0.707), complex( 0.707, -0.707)] + self.src = gr.vector_source_c(data, False) + self.snk = gr.vector_sink_c() + + self.tb.connect(self.src, self.test, self.snk) + self.tb.run() + + expected_result = 1000*[complex(1.2, 0), complex(0, 1.2), + complex(-1.2, 0), complex(0, -1.2)] + dst_data = self.snk.data() + + # Only compare last Ncmp samples + Ncmp = 100 + len_e = len(expected_result) + len_d = len(dst_data) + expected_result = expected_result[len_e - Ncmp:] + dst_data = dst_data[len_d - Ncmp:] + + #print expected_result + #print dst_data + + self.assertComplexTuplesAlmostEqual (expected_result, dst_data, 1) + +if __name__ == '__main__': + gr_unittest.run(test_mpsk_receiver, "test_mpsk_receiver.xml") -- cgit v1.2.3