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Interleaving optimization

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This commit is contained in:
Guy De Souza
2018-07-12 15:48:18 +02:00
parent 0234d37743
commit 1fd43c289a
2 changed files with 11 additions and 6 deletions
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openair1/PHY/NR_TRANSPORT/nr_pbch.c
+10 -5
View File
@@ -143,7 +143,7 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
uint8_t *pbch_e = pbch->pbch_e;
uint32_t *pbch_a_prime = (uint32_t*)pbch->pbch_a_prime;
uint32_t *pbch_a_interleaved = (uint32_t*)pbch->pbch_a_interleaved;
uint32_t unscrambling_mask = 0x87002D;
uint32_t unscrambling_mask = 0x100006D;
reset = 1;
// x1 is set in lte_gold_generic
@@ -177,7 +177,8 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
}
}
uint8_t nr_pbch_payload_interleaving_pattern[32] = {16, 23, 18, 17, 8, 30, 10, 6, 24, 7, 0, 5, 3, 2, 1, 4,
/* This portion of code is temporarily kept until the optimized version is validated
* uint8_t nr_pbch_payload_interleaving_pattern[32] = {16, 23, 18, 17, 8, 30, 10, 6, 24, 7, 0, 5, 3, 2, 1, 4,
9, 11, 12, 13, 14, 15, 19, 20, 21, 22, 25, 26, 27, 28, 29, 31};
uint8_t nr_pbch_payload_interleaver(uint8_t i) {
@@ -191,7 +192,11 @@ uint8_t nr_pbch_payload_interleaver(uint8_t i) {
return nr_pbch_payload_interleaving_pattern[j_ssb + (i-29)];
else
return nr_pbch_payload_interleaving_pattern[j_other + i];
}
}*/
/*This pattern takes into account the adjustments for the field specific counters j_sfn, j_hrf, j_ssb and j_other*/
uint8_t nr_pbch_payload_interleaving_pattern[32] = {1,4,9,11,12,13,14,15,19,20,21,22,25,26,27,28,
29,31,16,23,18,17,8,30,10,6,24,7,0,5,3,2};
int nr_generate_pbch(NR_gNB_PBCH *pbch,
uint8_t *pbch_pdu,
@@ -251,7 +256,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
in |= (uint32_t)(pbch->pbch_a[i]<<((3-i)<<3));
for (int i=0; i<32; i++) {
out |= ((in>>i)&1)<<(nr_pbch_payload_interleaver(i));
out |= ((in>>i)&1)<<(nr_pbch_payload_interleaving_pattern[i]);
#ifdef DEBUG_PBCH_ENCODING
printf("i %d in 0x%08x out 0x%08x ilv %d (in>>i)&1) 0x%08x\n", i, in, out, nr_pbch_payload_interleaver(i), (in>>i)&1);
#endif
@@ -289,7 +294,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
/// Scrambling
M = NR_POLAR_PBCH_E;
nushift = (Lmax==4)? ssb_index&3 : ssb_index&7;
nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, (Lmax), M, NR_POLAR_PBCH_E, 0);
nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, nushift, M, NR_POLAR_PBCH_E, 0);
#ifdef DEBUG_PBCH_ENCODING
printf("Scrambling:\n");
for (int i=0; i<NR_POLAR_PBCH_E>>3; i++)
openair1/SCHED_NR/nr_ru_procedures.c
+1 -1
View File
@@ -238,7 +238,7 @@ void nr_feptx_ofdm(RU_t *ru) {
}
// if S-subframe generate first slot only
if (nr_subframe_select(fp,subframe) == SF_S)
if (nr_subframe_select(cfg,subframe) == SF_S)
len = fp->samples_per_subframe / fp->slots_per_subframe;
else
len = fp->samples_per_subframe;