1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#!/usr/bin/env python
from gnuradio import gr, gr_unittest
from gnuradio import blocks
import gnuradio.dab as grdab
import cmath
from math import pi
class qa_ofdm_ffs_sample(gr_unittest.TestCase):
"""
@brief Module test for the OFDM ffs sampler with phase calculation.
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_ffe_all_in_one(self):
symbol_length = 5
num_symbols = 2
fft_length = 3
alpha = 0.1
src_data0 = [77*cmath.exp(2j*pi*x/20) for x in range(0,20)]
src_data0[4] = 100 # should not matter, as this area of the symbol is not evaluated
src_data0[12:19] = [100] * 7 # should not matter, as only the first two symbols are evaluated
src_data1 = (0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
d = -2*pi/20 # phase diff between two consective samples
expected_result = (0,0,0,0,0,0,0,0,0,0,0,0,d,d,d,d,d,d,d,d)
src0 = blocks.vector_source_c(src_data0)
src1 = blocks.vector_source_b(src_data1)
ffe = grdab.ofdm_ffe_all_in_one(symbol_length, fft_length, num_symbols, alpha, 10)
dst0 = blocks.vector_sink_f()
self.tb.connect(src0, (ffe,0))
self.tb.connect(src1, (ffe,1))
self.tb.connect(ffe, dst0)
self.tb.run()
result_data0 = dst0.data()
# print expected_result
# print result_data0
self.assertFloatTuplesAlmostEqual(expected_result, result_data0, 3)
if __name__ == '__main__':
gr_unittest.main()
|
