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#!/usr/bin/env python
from gnuradio import gr, gr_unittest, blocks
import gnuradio.dab as grdab
class qa_ofdm_ffs_sample(gr_unittest.TestCase):
"""
@brief Module test for the OFDM ffs sampler.
This class implements a test bench to verify the corresponding C++ class.
"""
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001_ofdm_ffs_sample(self):
symbol_length = 3
num_symbols = 2
fft_length = 2
alpha = 0.1
src_data0 = (0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0)
src_data1 = (0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0)
a = (11./2) / fft_length
b = 0.9*a + (0.1*15./2) / fft_length
expected_result = (0,0,0,0,0,0,0,a,a,a,a,a,a,a,a,a,a,a,a,b,b)
src0 = blocks.vector_source_f(src_data0)
src1 = blocks.vector_source_b(src_data1)
ofdm_ffs_sample = grdab.ofdm_ffs_sample(symbol_length, fft_length, num_symbols, alpha, 10)
dst0 = blocks.vector_sink_f()
self.tb.connect(src0, (ofdm_ffs_sample,0))
self.tb.connect(src1, (ofdm_ffs_sample,1))
self.tb.connect(ofdm_ffs_sample, dst0)
self.tb.run()
result_data0 = dst0.data()
# print expected_result
# print result_data0
self.assertFloatTuplesAlmostEqual(expected_result, result_data0, 6)
if __name__ == '__main__':
gr_unittest.main()
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