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minor cleanup

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This commit is contained in:
Ahmet Inan 2025-08-07 07:27:15 +02:00
commit bfd4d726d6
1 changed files with 10 additions and 12 deletions
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22
encode.cc
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@ -38,10 +38,10 @@ struct Encoder : public Common
code_type code[bits_max], perm[bits_max], mesg[bits_max], meta[data_tones];
cmplx fdom[symbol_len];
cmplx tdom[symbol_len];
cmplx temp[symbol_len];
cmplx ptsa[symbol_len];
cmplx ptsb[symbol_len];
cmplx best[symbol_len];
cmplx tmpa[symbol_len];
cmplx test[symbol_len];
cmplx kern[symbol_len];
cmplx guard[guard_len];
cmplx tone[tone_count];
@ -107,28 +107,26 @@ struct Encoder : public Common
value best_papr = 1000;
for (value ptsa_phase = -1; ptsa_phase < 2; ptsa_phase += 2) {
for (int i = 0; i < symbol_len; ++i)
temp[i] = ptsa_phase * ptsa[i];
tmpa[i] = ptsa_phase * ptsa[i];
for (value ptsb_phase = -1; ptsb_phase < 2; ptsb_phase += 2) {
for (int i = 0; i < symbol_len; ++i)
tdom[i] = ptsb_phase * ptsb[i] + temp[i];
test[i] = ptsb_phase * ptsb[i] + tmpa[i];
value peak = 0, mean = 0;
for (int i = 0; i < symbol_len; ++i) {
value power(norm(tdom[i]));
value power(norm(test[i]));
peak = std::max(peak, power);
mean += power;
}
mean /= symbol_len;
value cand_papr(peak / mean);
if (cand_papr < best_papr) {
best_papr = cand_papr;
value test_papr(peak / mean);
if (test_papr < best_papr) {
best_papr = test_papr;
papr[symbol_number] = best_papr;
for (int i = 0; i < symbol_len; ++i)
best[i] = tdom[i];
tdom[i] = test[i];
}
}
}
for (int i = 0; i < symbol_len; ++i)
tdom[i] = best[i];
papr[symbol_number] = best_papr;
}
clipping_and_filtering(scale);
if (symbol_number != -1) {