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fixed correlation computation in pucch_rx.c

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This commit is contained in:
Raymond Knopp
2022-11-05 21:54:23 +01:00
parent 96622f6b80
commit bf370cc55d
1 changed files with 33 additions and 11 deletions
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openair1/PHY/NR_TRANSPORT/pucch_rx.c
+33 -11
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@@ -53,7 +53,7 @@
#include "T.h"
#define DEBUG_NR_PUCCH_RX 1
//#define DEBUG_NR_PUCCH_RX 1
NR_gNB_PUCCH_t *new_gNB_pucch(void){
NR_gNB_PUCCH_t *pucch;
@@ -1515,31 +1515,50 @@ void nr_decode_pucch2(PHY_VARS_gNB *gNB,
#endif
prod_re[aa] = simde_mm256_hadds_epi16(prod_re[aa],prod_re[aa]);// 0+1
#ifdef DEBUG_NR_PUCCH_RX
printf("0.prod_re[%d] => (%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)\n",aa,
((int16_t*)&prod_re[aa])[0],((int16_t*)&prod_re[aa])[1],((int16_t*)&prod_re[aa])[2],((int16_t*)&prod_re[aa])[3],
((int16_t*)&prod_re[aa])[4],((int16_t*)&prod_re[aa])[5],((int16_t*)&prod_re[aa])[6],((int16_t*)&prod_re[aa])[7],
((int16_t*)&prod_re[aa])[8],((int16_t*)&prod_re[aa])[9],((int16_t*)&prod_re[aa])[10],((int16_t*)&prod_re[aa])[11],
((int16_t*)&prod_re[aa])[12],((int16_t*)&prod_re[aa])[13],((int16_t*)&prod_re[aa])[14],((int16_t*)&prod_re[aa])[15]);
#endif
prod_im[aa] = simde_mm256_hadds_epi16(prod_im[aa],prod_im[aa]);
prod_re[aa] = simde_mm256_hadds_epi16(prod_re[aa],prod_re[aa]);// 0+1+2+3
#ifdef DEBUG_NR_PUCCH_RX
printf("1.prod_re[%d] => (%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)\n",aa,
((int16_t*)&prod_re[aa])[0],((int16_t*)&prod_re[aa])[1],((int16_t*)&prod_re[aa])[2],((int16_t*)&prod_re[aa])[3],
((int16_t*)&prod_re[aa])[4],((int16_t*)&prod_re[aa])[5],((int16_t*)&prod_re[aa])[6],((int16_t*)&prod_re[aa])[7],
((int16_t*)&prod_re[aa])[8],((int16_t*)&prod_re[aa])[9],((int16_t*)&prod_re[aa])[10],((int16_t*)&prod_re[aa])[11],
((int16_t*)&prod_re[aa])[12],((int16_t*)&prod_re[aa])[13],((int16_t*)&prod_re[aa])[14],((int16_t*)&prod_re[aa])[15]);
#endif
prod_im[aa] = simde_mm256_hadds_epi16(prod_im[aa],prod_im[aa]);
prod_re[aa] = simde_mm256_hadds_epi16(prod_re[aa],prod_re[aa]);// 0+1+2+3+4+5+6+7
prod_im[aa] = simde_mm256_hadds_epi16(prod_im[aa],prod_im[aa]);
prod_re[aa] = simde_mm256_hadds_epi16(prod_re[aa],prod_re[aa]);// 0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15
#ifdef DEBUG_NR_PUCCH_RX
printf("2.prod_re[%d] => (%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)\n",aa,
((int16_t*)&prod_re[aa])[0],((int16_t*)&prod_re[aa])[1],((int16_t*)&prod_re[aa])[2],((int16_t*)&prod_re[aa])[3],
((int16_t*)&prod_re[aa])[4],((int16_t*)&prod_re[aa])[5],((int16_t*)&prod_re[aa])[6],((int16_t*)&prod_re[aa])[7],
((int16_t*)&prod_re[aa])[8],((int16_t*)&prod_re[aa])[9],((int16_t*)&prod_re[aa])[10],((int16_t*)&prod_re[aa])[11],
((int16_t*)&prod_re[aa])[12],((int16_t*)&prod_re[aa])[13],((int16_t*)&prod_re[aa])[14],((int16_t*)&prod_re[aa])[15]);
#endif
prod_im[aa] = simde_mm256_hadds_epi16(prod_im[aa],prod_im[aa]);
}
int64_t corr_re=0,corr_im=0;
for (int aa=0;aa<Prx;aa++) {
corr_re = ( corr32_re[symb][group][aa]+((int16_t*)(&prod_re[aa]))[0]+((int16_t*)(&prod_re[aa]))[8]);
corr_im = ( corr32_im[symb][group][aa]+((int16_t*)(&prod_im[aa]))[0]+((int16_t*)(&prod_im[aa]))[8]);
#ifdef DEBUG_NR_PUCCH_RX
printf("pucch2 cw %d group %d aa %d: (%d,%d)+(%d,%d) = (%d,%d)\n",cw,group,aa,
corr32_re[symb][group][aa],corr32_im[symb][group][aa],
((int16_t*)(&prod_re[aa]))[0],
((int16_t*)(&prod_im[aa]))[0],
corr32_re[symb][group][aa]+((int16_t*)(&prod_re[aa]))[0],
corr32_im[symb][group][aa]+((int16_t*)(&prod_im[aa]))[0]);
((int16_t*)(&prod_re[aa]))[0]+((int16_t*)(&prod_re[aa]))[8],
((int16_t*)(&prod_im[aa]))[0]+((int16_t*)(&prod_im[aa]))[8],
corr_re,corr_im
);
#endif
corr_re = ( corr32_re[symb][group][aa]+((int16_t*)(&prod_re[aa]))[0]);
corr_im = ( corr32_im[symb][group][aa]+((int16_t*)(&prod_im[aa]))[0]);
corr_tmp += corr_re*corr_re + corr_im*corr_im;
} // aa loop
}// group loop
@@ -1547,11 +1566,14 @@ void nr_decode_pucch2(PHY_VARS_gNB *gNB,
if (corr_tmp > corr) {
corr = corr_tmp;
cw_ML=cw;
#ifdef DEBUG_NR_PUCCH_RX
printf("slot %d PUCCH2 cw_ML %d, corr %llu\n",slot,cw_ML,corr);
#endif
}
} // cw loop
corr_dB = dB_fixed64((uint64_t)corr);
#ifdef DEBUG_NR_PUCCH_RX
printf("slot %d PUCCH2 cw_ML %d, metric %d dB\n",slot,cw_ML,corr_dB);
printf("slot %d PUCCH2 cw_ML %d, metric %d \n",slot,cw_ML,corr_dB);
#endif
decodedPayload[0]=(uint64_t)cw_ML;
}