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align parity bits accordingly

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if we want to use a crc aid at the end, we should move the start of the
first parity bit as far as possible to the front, otherwise we want the
last bit to be a parity bit
This commit is contained in:
Ahmet Inan 2024-01-21 11:05:31 +01:00
commit f3d3afbe01
2 changed files with 9 additions and 6 deletions
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7
tests/polar_list_regression_test.cc
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@ -84,6 +84,9 @@ int main()
for (int i = 0; i < N - K; ++i)
frozen[reliability_sequence[i]/32] |= 1 << (reliability_sequence[i]%32);
int P = K / (S + 1);
int F = K % (S + 1);
if (!crc_aided)
F += S;
if (par_aided)
K -= P;
std::cerr << "Polar(" << N << ", " << K << ")" << std::endl;
@ -142,7 +145,7 @@ int main()
assert(codeword[i] == message[j++]);
} else if (par_aided) {
CODE::PolarParityEncoder<code_type> encode;
encode(codeword, message, frozen, M, S);
encode(codeword, message, frozen, M, S, F);
} else {
CODE::PolarEncoder<code_type> encode;
encode(codeword, message, frozen, M);
@ -169,7 +172,7 @@ int main()
auto start = std::chrono::system_clock::now();
if (par_aided)
(*par_dec)(metric, decoded, codeword, frozen, M, S);
(*par_dec)(metric, decoded, codeword, frozen, M, S, F);
else
(*decode)(metric, decoded, codeword, frozen, M);
auto end = std::chrono::system_clock::now();