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#!/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")
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