Mirror/aicodix___code
1
0
Fork 0
mirror of https://github.com/aicodix/code.git synced 2026-04-27 22:35:44 +00:00
Code Issues Projects Releases Packages Wiki Activity

also return codeword unmodulated

Browse source
This commit is contained in:
Ahmet Inan 2020-06-09 09:24:05 +02:00
commit 05bd06ec0a
2 changed files with 8 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

3
short_bch_code_encoder.hh
View file

@ -34,11 +34,12 @@ public:
{ {
return (msg << P) | par[msg]; return (msg << P) | par[msg];
} }
void operator()(int8_t *code, int msg) int operator()(int8_t *code, int msg)
{ {
int cw = (*this)(msg); int cw = (*this)(msg);
for (int i = 0; i < N; ++i) for (int i = 0; i < N; ++i)
code[i] = 1 - 2 * ((cw >> i) & 1); code[i] = 1 - 2 * ((cw >> i) & 1);
return cw;
} }
}; };

12
tests/soft_bch_regression_test.cc
View file

@ -64,7 +64,7 @@ int main()
float symb[CODE_LEN]; float symb[CODE_LEN];
int dat = data(); int dat = data();
encode(code, dat); int enc = encode(code, dat);
for (int i = 0; i < CODE_LEN; ++i) for (int i = 0; i < CODE_LEN; ++i)
orig[i] = code[i]; orig[i] = code[i];
@ -85,17 +85,17 @@ int main()
for (int i = 0; i < CODE_LEN; ++i) for (int i = 0; i < CODE_LEN; ++i)
noisy[i] = code[i]; noisy[i] = code[i];
int dec = decode(code) >> (CODE_LEN - DATA_LEN); int dec = decode(code);
for (int i = 0; i < CODE_LEN; ++i) for (int i = 0; i < CODE_LEN; ++i)
awgn_errors += noisy[i] * orig[i] < 0; awgn_errors += noisy[i] * orig[i] < 0;
for (int i = 0; i < CODE_LEN; ++i) for (int i = 0; i < CODE_LEN; ++i)
quantization_erasures += !noisy[i]; quantization_erasures += !noisy[i];
uncorrected_errors += popcnt(dat^dec); uncorrected_errors += popcnt(enc^dec);
for (int i = 0; i < DATA_LEN; ++i) for (int i = 0; i < CODE_LEN; ++i)
decoder_errors += ((dec^dat)&(1<<i)) && orig[i] * noisy[i] > 0; decoder_errors += ((enc^dec)&(1<<i)) && orig[i] * noisy[i] > 0;
} }
float bit_error_rate = (float)uncorrected_errors / (float)(DATA_LEN * LOOPS); float bit_error_rate = (float)uncorrected_errors / (float)(CODE_LEN * LOOPS);
if (bit_error_rate < 0.0001) if (bit_error_rate < 0.0001)
min_SNR = std::min(min_SNR, SNR); min_SNR = std::min(min_SNR, SNR);