def extract_next_bits_with_zero_padding(buffer_, index, nrof_bits):
extracted_bits = itpp.bvec()
buffer_size = buffer_.length()
if (index + nrof_bits) <= buffer_size:
extracted_bits = buffer_.mid(index, nrof_bits)
else:
extracted_bits = buffer_.mid(index, buffer_size - index)
nrof_padding_bits = nrof_bits - extracted_bits.length()
extracted_bits = itpp.concat(extracted_bits,
itpp.zeros_b(nrof_padding_bits))
return extracted_bits
def _rate_match_by_truncation(input_bits):
nrof_blocks = int(input_bits.length() / input_block_size)
rate_matched_bits = zeros_b(nrof_blocks * rate_matched_block_size)
for block_index in range(nrof_blocks):
# Extract the current block bring rate matched
rate_matched_block = input_bits.mid(block_index * input_block_size,
rate_matched_block_size)
# Truncate the rightmost bits and insert into the rate matched bits
rate_matched_bits.set_subvector(
block_index * rate_matched_block_size, rate_matched_block)
return rate_matched_bits
def error_counter(blocks_in, blocks_out, blocksize):
nrof_blocks = int(blocks_in.length() / blocksize)
block_success = itpp.zeros_b(nrof_blocks)
nrof_errors = 0
for block_index in range(nrof_blocks):
if (blocks_in.mid(block_index * blocksize, blocksize) !=
blocks_out.mid(block_index * blocksize, blocksize)):
block_success[block_index] = itpp.bin(0)
nrof_errors += 1
else:
block_success[block_index] = itpp.bin(1)
block_error_ratio = float(nrof_errors) / float(nrof_blocks)
block_success_np = np.array(block_success)
return (block_error_ratio, block_success_np)
def error_counter(blocks_in, blocks_out, blocksize):
nrof_blocks = int(blocks_in.length() / blocksize)
block_success = itpp.zeros_b(nrof_blocks)
nrof_errors = 0
for block_index in range(nrof_blocks):
if (blocks_in.mid(block_index * blocksize, blocksize) !=
blocks_out.mid(block_index * blocksize, blocksize)):
block_success[block_index] = itpp.bin(0)
nrof_errors += 1
else:
block_success[block_index] = itpp.bin(1)
block_error_ratio = float(nrof_errors) / float(nrof_blocks)
block_success_np = np.fromstring(block_success.__str__()[1:-1],
dtype=np.int,
sep=', ')
return (block_error_ratio, block_success_np)