diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2011-07-24 12:28:26 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2011-07-24 12:28:26 -0400 |
| commit | 03e8904ef8800a96cad1d3131eb5cf351b5d4fb5 (patch) | |
| tree | 91f9647255bdb004eac9622e92b98394a5ce6cef /gr-digital/python/qa_lms_equalizer.py | |
| parent | 3f7cf37a4da765aaabe89fc1723f1fc1c372ca4d (diff) | |
digital: adding QA code for LMS DD equalizer.
Diffstat (limited to 'gr-digital/python/qa_lms_equalizer.py')
| -rw-r--r-- | gr-digital/python/qa_lms_equalizer.py | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gr-digital/python/qa_lms_equalizer.py b/gr-digital/python/qa_lms_equalizer.py new file mode 100644 index 0000000000..025c785aa4 --- /dev/null +++ b/gr-digital/python/qa_lms_equalizer.py @@ -0,0 +1,53 @@ +#!/usr/bin/env python +# +# Copyright 2006,2007,2010,2011 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 + +class test_lms_dd_equalizer(gr_unittest.TestCase): + + def setUp(self): + self.tb = gr.top_block() + + def tearDown(self): + self.tb = None + + def transform(self, src_data, gain, const): + SRC = gr.vector_source_c(src_data, False) + EQU = digital_swig.lms_dd_equalizer_cc(4, gain, 1, const.base()) + DST = gr.vector_sink_c() + self.tb.connect(SRC, EQU, DST) + self.tb.run() + return DST.data() + + def test_001_identity(self): + # Constant modulus signal so no adjustments + const = digital_swig.constellation_qpsk() + src_data = const.points()*1000 + + N = 100 # settling time + expected_data = src_data[N:] + result = self.transform(src_data, 0.1, const)[N:] + self.assertComplexTuplesAlmostEqual(expected_data, result, 5) + +if __name__ == "__main__": + gr_unittest.run(test_lms_dd_equalizer, "test_lms_dd_equalizer.xml") |