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#!/usr/bin/env python
#
# Copyright 2004,2007,2010-2013,2020 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest, digital, blocks
import numpy as np
class test_constellation_encoder(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_constellation_encoder_bc_bpsk(self):
cnst = digital.constellation_bpsk()
src_data = (1, 1, 0, 0,
1, 0, 1)
const_map = [-1.0, 1.0]
expected_result = [const_map[x] for x in src_data]
src = blocks.vector_source_b(src_data)
op = digital.constellation_encoder_bc(cnst.base())
dst = blocks.vector_sink_c()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run() # run the graph and wait for it to finish
actual_result = dst.data() # fetch the contents of the sink
# print "actual result", actual_result
# print "expected result", expected_result
self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
def test_constellation_encoder_bc_qpsk(self):
cnst = digital.constellation_qpsk()
src_data = (3, 1, 0, 2,
3, 2, 1)
expected_result = [cnst.points()[x] for x in src_data]
src = blocks.vector_source_b(src_data)
op = digital.constellation_encoder_bc(cnst.base())
dst = blocks.vector_sink_c()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run() # run the graph and wait for it to finish
actual_result = dst.data() # fetch the contents of the sink
# print "actual result", actual_result
# print "expected result", expected_result
self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
def test_constellation_encoder_bc_qpsk_random(self):
cnst = digital.constellation_qpsk()
src_data = np.random.randint(0, 4, size=20000)
expected_result = [cnst.points()[x] for x in src_data]
src = blocks.vector_source_b(src_data)
op = digital.constellation_encoder_bc(cnst.base())
dst = blocks.vector_sink_c()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run() # run the graph and wait for it to finish
actual_result = dst.data() # fetch the contents of the sink
# print "actual result", actual_result
# print "expected result", expected_result
self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
if __name__ == '__main__':
gr_unittest.run(test_constellation_encoder)
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