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#!/usr/bin/env python
#
# Copyright 2012,2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
import math
from gnuradio import gr, gr_unittest, analog, blocks
def avg_mag_sqrd_c(x, alpha):
y = [0, ]
for xi in x:
tmp = alpha * (xi.real * xi.real + xi.imag *
xi.imag) + (1 - alpha) * y[-1]
y.append(tmp)
return y
def avg_mag_sqrd_f(x, alpha):
y = [0, ]
for xi in x:
tmp = alpha * (xi * xi) + (1 - alpha) * y[-1]
y.append(tmp)
return y
class test_probe_avg_mag_sqrd(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_c_001(self):
alpha = 0.0001
src_data = [
1.0 + 1.0j,
2.0 + 2.0j,
3.0 + 3.0j,
4.0 + 4.0j,
5.0 + 5.0j,
6.0 + 6.0j,
7.0 + 7.0j,
8.0 + 8.0j,
9.0 + 9.0j,
10.0 + 10.0j]
expected_result = avg_mag_sqrd_c(src_data, alpha)[-1]
src = blocks.vector_source_c(src_data)
op = analog.probe_avg_mag_sqrd_c(0, alpha)
self.tb.connect(src, op)
self.tb.run()
result_data = op.level()
self.assertAlmostEqual(expected_result, result_data, 5)
def test_cf_002(self):
alpha = 0.0001
src_data = [
1.0 + 1.0j,
2.0 + 2.0j,
3.0 + 3.0j,
4.0 + 4.0j,
5.0 + 5.0j,
6.0 + 6.0j,
7.0 + 7.0j,
8.0 + 8.0j,
9.0 + 9.0j,
10.0 + 10.0j]
expected_result = avg_mag_sqrd_c(src_data, alpha)[0:-1]
src = blocks.vector_source_c(src_data)
op = analog.probe_avg_mag_sqrd_cf(0, alpha)
dst = blocks.vector_sink_f()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run()
result_data = dst.data()
self.assertComplexTuplesAlmostEqual(expected_result, result_data, 5)
def test_f_003(self):
alpha = 0.0001
src_data = [1.0, 2.0, 3.0, 4.0, 5.0,
6.0, 7.0, 8.0, 9.0, 10.0]
expected_result = avg_mag_sqrd_f(src_data, alpha)[-1]
src = blocks.vector_source_f(src_data)
op = analog.probe_avg_mag_sqrd_f(0, alpha)
self.tb.connect(src, op)
self.tb.run()
result_data = op.level()
self.assertAlmostEqual(expected_result, result_data, 5)
if __name__ == '__main__':
gr_unittest.run(test_probe_avg_mag_sqrd)
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