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feat(nrLDPC_coding_segment_encoder): Dense Rate Matching and Dense and Concatenated Output

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1. 3GPP Rate-matching/interleaving on 8-segment blocks, deinterleaving at output of multi-segment processing.

2. Bit-packing done in nrLDPC_coding_segment_encoder.c now instead of nr_scrambling.
   Interestingly, it improves performance significantly too.
   Tested for AVX512 only for now.
This commit is contained in:
Raymond Knopp
2025-05-13 14:08:33 +00:00
committed by Romain Beurdouche
parent 33078f9e3d
commit bbbbda70f5
4 changed files with 443 additions and 171 deletions
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openair1/SIMULATION/NR_PHY/dlschsim.c
+3 -3
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@@ -512,7 +512,7 @@ int main(int argc, char **argv)
//printf("crc32: [0]->0x%08x\n",crc24c(test_input, 32));
// generate signal
unsigned char output[rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * 8 * NR_MAX_NB_LAYERS] __attribute__((aligned(32)));
unsigned char output[rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * 8 * NR_MAX_NB_LAYERS] __attribute__((aligned(64)));
bzero(output,rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * 8 * NR_MAX_NB_LAYERS);
if (input_fd == NULL) {
msgDataTx.num_pdsch_slot = 1;
@@ -533,12 +533,12 @@ int main(int argc, char **argv)
//if (i<16)
// printf("encoder output f[%d] = %d\n",i,dlsch->harq_processes[0]->f[i]);
if (output[i] == 0)
if ((output[i]&1) == 0)
modulated_input[i] = 1.0; ///sqrt(2); //QPSK
else
modulated_input[i] = -1.0; ///sqrt(2);
//if (i<16) printf("modulated_input[%d] = %d\n",i,modulated_input[i]);
//if (i<16) printf("modulated_input[%d] = %f (%d)\n",i,modulated_input[i],output[i]);
//SNR =10;
SNR_lin = pow(10, SNR / 10.0);
sigma = 1.0 / sqrt(2 * SNR_lin);