def test_003_stream(self):
print "test_003_stream"
nframes = 5
expo = 8
block_size = 2 ** expo
num_info_bits = 2 ** (expo - 1)
max_list_size = 2 ** (expo - 2)
num_frozen_bits = block_size - num_info_bits
frozen_bit_positions = cc.frozen_bit_positions(block_size, num_info_bits, 0.0)
frozen_bit_values = np.array([0] * num_frozen_bits,)
encoder = PolarEncoder(block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
ref = np.array([], dtype=int)
data = np.array([], dtype=int)
for i in range(nframes):
b = np.random.randint(2, size=num_info_bits)
d = encoder.encode(b)
data = np.append(data, d)
ref = np.append(ref, b)
gr_data = 2.0 * data - 1.0
polar_decoder = fec.polar_decoder_sc_list.make(max_list_size, block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
src = blocks.vector_source_f(gr_data, False)
dec_block = extended_decoder(polar_decoder, None)
snk = blocks.vector_sink_b(1)
self.tb.connect(src, dec_block)
self.tb.connect(dec_block, snk)
self.tb.run()
res = np.array(snk.data()).astype(dtype=int)
self.assertTupleEqual(tuple(res), tuple(ref))
def test_002_one_vector(self):
print "test_002_one_vector"
expo = 6
block_size = 2 ** expo
num_info_bits = 2 ** (expo - 1)
max_list_size = 2 ** (expo - 2)
num_frozen_bits = block_size - num_info_bits
frozen_bit_positions = cc.frozen_bit_positions(block_size, num_info_bits, 0.0)
frozen_bit_values = np.array([0] * num_frozen_bits,)
bits = np.random.randint(2, size=num_info_bits)
encoder = PolarEncoder(block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
data = encoder.encode(bits)
gr_data = 2.0 * data - 1.0
polar_decoder = fec.polar_decoder_sc_list.make(max_list_size, block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
src = blocks.vector_source_f(gr_data, False)
dec_block = extended_decoder(polar_decoder, None)
snk = blocks.vector_sink_b(1)
self.tb.connect(src, dec_block)
self.tb.connect(dec_block, snk)
self.tb.run()
res = np.array(snk.data()).astype(dtype=int)
print("\ninput -> result -> bits")
print(data)
print(res)
print(bits)
self.assertTupleEqual(tuple(res), tuple(bits))
def generate_test_data(self, block_size, num_info_bits, frozen_bit_positions, frozen_bit_values, nframes, onlyones):
encoder = PolarEncoder(block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
bits = np.array([], dtype=int)
data = np.array([], dtype=int)
for n in range(nframes):
if onlyones:
b = np.ones(num_info_bits, dtype=int)
else:
b = np.random.randint(2, size=num_info_bits)
d = encoder.encode(b)
bits = np.append(bits, b)
data = np.append(data, d)
gr_data = 2.0 * data - 1.0
return bits, gr_data
def get_test_data(self, block_size, num_info_bits, num_blocks, is_packed):
# helper function to set up test data and together with encoder object.
num_frozen_bits = block_size - num_info_bits
frozen_bit_positions = cc.frozen_bit_positions(block_size, num_info_bits, 0.0)
frozen_bit_values = np.array([0] * num_frozen_bits,)
python_encoder = PolarEncoder(block_size, num_info_bits, frozen_bit_positions, frozen_bit_values)
data = np.array([], dtype=int)
ref = np.array([], dtype=int)
for i in range(num_blocks):
d = np.random.randint(2, size=num_info_bits)
data = np.append(data, d)
ref = np.append(ref, python_encoder.encode(d))
polar_encoder = fec.polar_encoder.make(block_size, num_info_bits, frozen_bit_positions, frozen_bit_values, is_packed)
return data, ref, polar_encoder
def get_test_data(self, block_size, num_info_bits, num_blocks):
# helper function to set up test data and together with encoder object.
num_frozen_bits = block_size - num_info_bits
frozen_bit_positions = cc.frozen_bit_positions(block_size,
num_info_bits, 0.0)
frozen_bit_values = np.array([0] * num_frozen_bits, )
python_encoder = PolarEncoder(block_size, num_info_bits,
frozen_bit_positions, frozen_bit_values)
data = np.array([], dtype=int)
ref = np.array([], dtype=int)
for i in range(num_blocks):
d = np.random.randint(2, size=num_info_bits)
data = np.append(data, d)
ref = np.append(ref, python_encoder.encode_systematic(d))
polar_encoder = fec.polar_encoder_systematic.make(
block_size, num_info_bits, frozen_bit_positions)
return data, ref, polar_encoder