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Use gold cache in UCI

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This commit is contained in:
Laurent THOMAS
2024-07-30 14:57:01 +02:00
committed by Robert Schmidt
parent 00cb43bac3
commit f207ac12be
1 changed files with 26 additions and 35 deletions
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openair1/PHY/NR_TRANSPORT/nr_uci_tools_common.c
+26 -35
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@@ -31,8 +31,6 @@
*/
#include "nr_dci.h"
#include "openair1/PHY/LTE_TRANSPORT/transport_proto.h" // for lte_gold_generic()
void nr_group_sequence_hopping(pucch_GroupHopping_t PUCCH_GroupHopping,
uint32_t n_id,
@@ -65,11 +63,7 @@ void nr_group_sequence_hopping(pucch_GroupHopping_t PUCCH_GroupHopping,
#endif
uint8_t f_ss=0,f_gh=0;
*u=0;
*v=0;
uint32_t c_init = 0;
uint32_t x1,s; // TS 38.211 Subclause 5.2.1
int l = 32, minShift = ((2*nr_slot_tx+n_hop)<<3);
int tmpShift =0;
*v = 0;
#ifdef DEBUG_NR_PUCCH_TX
printf("\t\t [nr_group_sequence_hopping] calculating u,v -> ");
#endif
@@ -79,41 +73,39 @@ void nr_group_sequence_hopping(pucch_GroupHopping_t PUCCH_GroupHopping,
}
if (PUCCH_GroupHopping == enable) { // PUCCH_GroupHopping 'enabled'
c_init = floor(n_id/30); // we initialize c_init to calculate u,v according to 6.3.2.2.1 of 38.211
s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
uint32_t c_init = floor(n_id / 30); // we initialize c_init to calculate u,v according to 6.3.2.2.1 of 38.211
int l = 32, minShift = (2 * nr_slot_tx + n_hop) << 3;
uint32_t *seq = gold_cache(c_init, (minShift + 31) / 32 + 8); // TS 38.211 Subclause 5.2.1
int goldIdx = 0;
for (int m=0; m<8; m++) {
while(minShift >= l) {
s = lte_gold_generic(&x1, &c_init, 0);
goldIdx++;
l = l+32;
}
tmpShift = (minShift&((1<<5)-1)); //minShift%32;
f_gh = f_gh + ((1<<m)*((uint8_t)((s>>tmpShift)&1)));
AssertFatal(goldIdx < 8 + (minShift + 31) / 32, "");
int tmpShift = (minShift & ((1 << 5) - 1)); // minShift%32;
f_gh = f_gh + ((1 << m) * ((uint8_t)((seq[goldIdx] >> tmpShift) & 1)));
minShift ++;
}
f_gh = f_gh%30;
f_ss = n_id%30;
/* for (int m=0; m<8; m++){
f_gh = f_gh + ((1<<m)*((uint8_t)((s>>(8*(2*nr_slot_tx+n_hop)+m))&1))); // Not sure we have to use nr_slot_tx FIXME!!!
}
f_gh = f_gh%30;
f_ss = n_id%30;*/
f_ss = n_id % 30;
}
if (PUCCH_GroupHopping == disable) { // PUCCH_GroupHopping 'disabled'
c_init = (1<<5)*floor(n_id/30)+(n_id%30); // we initialize c_init to calculate u,v
s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
uint32_t c_init = (1 << 5) * floor(n_id / 30) + (n_id % 30); // we initialize c_init to calculate u,v
int goldIdx = 0;
f_ss = n_id%30;
l = 32, minShift = (2*nr_slot_tx+n_hop);
int l = 32, minShift = (2 * nr_slot_tx + n_hop);
while(minShift >= l) {
s = lte_gold_generic(&x1, &c_init, 0);
goldIdx++;
l = l+32;
}
tmpShift = (minShift&((1<<5)-1)); //minShift%32;
*v = (uint8_t)((s>>tmpShift)&1);
// TS 38.211 Subclause 5.2.1
uint32_t *seq = gold_cache(c_init, goldIdx + 1);
int tmpShift = (minShift & ((1 << 5) - 1)); // minShift%32;
*v = (uint8_t)((seq[goldIdx] >> tmpShift) & 1);
// *v = (uint8_t)((s>>(2*nr_slot_tx+n_hop))&1); // Not sure we have to use nr_slot_tx FIXME!!!
}
@@ -141,28 +133,27 @@ double nr_cyclic_shift_hopping(uint32_t n_id,
double alpha = 0.5235987756;
uint32_t c_init = n_id; // we initialize c_init again to calculate n_cs
uint32_t x1,s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
uint8_t n_cs=0;
int l = 32, minShift = (14*8*nr_slot_tx )+ 8*(lnormal+lprime);
int tmpShift =0;
int l = 32, minShift = (14 * 8 * nr_slot_tx) + 8 * (lnormal + lprime);
#ifdef DEBUG_NR_PUCCH_TX
printf("\t\t [nr_cyclic_shift_hopping] calculating alpha (cyclic shift) using c_init=%u -> \n",c_init);
#endif
uint32_t *seq = gold_cache(c_init, 8 + (minShift + 31) / 32); // TS 38.211 Subclause 5.2.1
int goldIdx = 0;
for (int m=0; m<8; m++) {
while(minShift >= l) {
s = lte_gold_generic(&x1, &c_init, 0);
goldIdx++;
l = l+32;
}
tmpShift = (minShift&((1<<5)-1)); //minShift%32;
AssertFatal(goldIdx < 8 + (minShift + 31) / 32, "");
int tmpShift = (minShift & ((1 << 5) - 1)); // minShift%32;
minShift ++;
n_cs = n_cs+((1<<m)*((uint8_t)((s>>tmpShift)&1)));
n_cs += (1 << m) * (uint8_t)((seq[goldIdx] >> tmpShift) & 1);
// calculating n_cs (Not sure we have to use nr_slot_tx FIXME!!!)
// n_cs = n_cs+((1<<m)*((uint8_t)((s>>((14*8*nr_slot_tx) + 8*(lnormal+lprime) + m))&1)));
}
alpha = (alpha * (double)((m0+mcs+n_cs)%12));
alpha = alpha * (double)((m0 + mcs + n_cs) % 12);
#ifdef DEBUG_NR_PUCCH_TX
printf("n_cs=%d -> %lf\n",n_cs,alpha);
#endif