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cleaned up scaling

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This commit is contained in:
Ahmet Inan 2025-07-01 09:24:27 +02:00
commit e900853840
1 changed files with 4 additions and 4 deletions
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8
encode.cc
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@ -86,7 +86,7 @@ struct Encoder
fwd(temp, tdom);
for (int i = 0; i < symbol_len; ++i) {
if (norm(fdom[i])) {
temp[i] *= scale / std::sqrt(value(symbol_len));
temp[i] *= 1 / (scale * symbol_len);
cmplx err = temp[i] - fdom[i];
value mag = abs(err);
value lim = 0.1 * mod_distance();
@ -98,7 +98,7 @@ struct Encoder
}
bwd(tdom, temp);
for (int i = 0; i < symbol_len; ++i)
tdom[i] /= scale * std::sqrt(value(symbol_len));
tdom[i] *= scale;
}
void tone_reservation()
{
@ -119,9 +119,9 @@ struct Encoder
for (int i = 0; i < tone_count; ++i)
fdom[bin(i+tone_off)] = tone[i];
bwd(tdom, fdom);
value scale = 2 / std::sqrt(value(symbol_len) / value(tone_count));
value scale = value(0.5) / std::sqrt(value(tone_count));
for (int i = 0; i < symbol_len; ++i)
tdom[i] /= scale * std::sqrt(value(symbol_len));
tdom[i] *= scale;
clipping_and_filtering(scale, papr_reduction);
if (papr_reduction)
tone_reservation();