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drop differential modes

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This commit is contained in:
Ahmet Inan 2025-07-27 16:55:37 +02:00
commit fde3bed386
4 changed files with 38 additions and 62 deletions
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11
encode.cc
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@ -41,7 +41,6 @@ struct Encoder : public Common
cmplx kern[symbol_len];
cmplx guard[guard_len];
cmplx tone[tone_count];
cmplx prev[tone_count];
cmplx temp[tone_count];
value weight[guard_len];
value papr[symbols_max];
@ -79,8 +78,6 @@ struct Encoder : public Common
void symbol(int symbol_number)
{
value scale = value(0.5) / std::sqrt(value(tone_count));
for (int i = 0; differential && symbol_number > 0 && i < tone_count; ++i)
tone[i] *= prev[i];
value best_papr = 1000;
CODE::XorShiftMask<int, 14, 1, 5, 10, 1> combination;
for (int trial = 0; trial < 4096; ++trial) {
@ -124,8 +121,6 @@ struct Encoder : public Common
value cand_papr(peak / mean);
if (cand_papr < best_papr) {
best_papr = cand_papr;
for (int i = 0; differential && symbol_number >= 0 && i < tone_count; ++i)
prev[i] = temp[i];
for (int i = 0; i < symbol_len; ++i)
best[i] = tdom[i];
if (cand_papr < 5)
@ -385,11 +380,11 @@ int main(int argc, char **argv)
}
int oper_mode = 0;
char *modulation = argv[7];
if (!strcmp(modulation, "DBPSK")) {
if (!strcmp(modulation, "BPSK")) {
oper_mode |= 0 << 4;
} else if (!strcmp(modulation, "DQPSK")) {
} else if (!strcmp(modulation, "QPSK")) {
oper_mode |= 1 << 4;
} else if (!strcmp(modulation, "D8PSK")) {
} else if (!strcmp(modulation, "8PSK")) {
oper_mode |= 2 << 4;
} else if (!strcmp(modulation, "QAM16")) {
oper_mode |= 3 << 4;