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added some more modes

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This commit is contained in:
Ahmet Inan 2025-07-05 10:33:17 +02:00
commit 0cf1e2f3fe
4 changed files with 185 additions and 55 deletions
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12
decode.cc
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@ -88,8 +88,12 @@ struct Decoder : Common
void demap_bits(code_type *b, cmplx c, value precision, int bits)
{
switch (bits) {
case 1:
return PhaseShiftKeying<2, cmplx, code_type>::soft(b, c, precision);
case 2:
return PhaseShiftKeying<4, cmplx, code_type>::soft(b, c, precision);
case 3:
return PhaseShiftKeying<8, cmplx, code_type>::soft(b, c, precision);
case 4:
return QuadratureAmplitudeModulation<16, cmplx, code_type>::soft(b, c, precision);
case 6:
@ -181,13 +185,11 @@ struct Decoder : Common
for (int i = 0; i < pilot_tones; ++i)
mode[i] = clamp(std::nearbyint(127 * demod_or_erase(tone[i*block_length+first_pilot], chan[i*block_length+first_pilot]).real() * nrz(seq1())));
int oper_mode = hadamard_decoder(mode);
if (oper_mode < 0 || oper_mode > 15) {
if (oper_mode < 0 || oper_mode > 27) {
std::cerr << "operation mode " << oper_mode << " unsupported." << std::endl;
continue;
}
std::cerr << "oper mode: " << oper_mode << std::endl;
if (!oper_mode)
continue;
setup(oper_mode);
std::cerr << "Es/N0 (dB):";
for (int j = 0, k = 0; j < symbol_count; ++j) {
@ -242,7 +244,9 @@ struct Decoder : Common
if (i % block_length == reserved_off)
continue;
int bits = mod_bits;
if (oper_mode >= 9 && oper_mode <= 11 && k % 64 == 60)
if (oper_mode >= 7 && oper_mode <= 9 && k % 32 == 30)
bits = 2;
if (oper_mode >= 21 && oper_mode <= 23 && k % 64 == 60)
bits = 4;
demap_bits(perm+k, demod[i], precision, bits);
k += bits;