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don't touch the pilots when clipping

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This commit is contained in:
Ahmet Inan 2025-07-02 07:32:01 +02:00
commit c7d801904e
1 changed files with 11 additions and 6 deletions
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17
encode.cc
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@ -86,15 +86,20 @@ struct Encoder
}
fwd(temp, tdom);
for (int i = 0; i < symbol_len; ++i) {
if (norm(fdom[i])) {
temp[i] *= 1 / (scale * symbol_len);
cmplx err = temp[i] - fdom[i];
int j = bin(i + tone_off);
if (i >= tone_count) {
temp[j] = 0;
} else if (i % block_length == pilot_off) {
temp[j] = fdom[j];
} else if (i % block_length == reserved_off) {
temp[j] = 0;
} else {
temp[j] *= 1 / (scale * symbol_len);
cmplx err = temp[j] - fdom[j];
value mag = abs(err);
value lim = 0.1 * mod_distance();
if (limit && mag > lim)
temp[i] -= ((mag - lim) / mag) * err;
} else {
temp[i] = 0;
temp[j] -= ((mag - lim) / mag) * err;
}
}
bwd(tdom, temp);