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Commit 44037b0c authored by Matthieu Kanj's avatar Matthieu Kanj
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improving NPUSCH structure

parent 6f2b2eeb
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Showing with 105 additions and 53 deletions
openair1/PHY/LTE_TRANSPORT/proto_NB_IoT.h
View file @ 44037b0c
......@@ -381,6 +381,28 @@ void get_llr_per_sf_NB_IoT(PHY_VARS_eNB *eNB,
uint16_t ul_sc_start,
uint16_t Nsc_RU);
void descrambling_NPUSCH_data_NB_IoT(LTE_DL_FRAME_PARMS *fp,
int16_t *ulsch_llr,
int16_t *y,
uint8_t Qm,
unsigned int Cmux,
uint32_t rnti_tmp,
uint8_t rx_subframe,
uint32_t rx_frame);
void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
LTE_DL_FRAME_PARMS *fp,
eNB_rxtx_proc_t *proc,
uint8_t npusch_format,
uint16_t N_SF_per_word,
uint16_t Nsc_RU,
uint16_t N_UL_slots,
uint8_t Qm,
uint8_t pilots_slot,
uint32_t rnti_tmp,
uint8_t rx_subframe,
uint32_t rx_frame);
uint8_t rx_ulsch_Gen_NB_IoT(PHY_VARS_eNB *eNB,
eNB_rxtx_proc_t *proc,
......
openair1/PHY/LTE_TRANSPORT/ulsch_demodulation_NB_IoT.c
View file @ 44037b0c
......@@ -1403,6 +1403,75 @@ void get_llr_per_sf_NB_IoT(PHY_VARS_eNB *eNB,
}
////////////////////////////////////descrambling NPUSCH //////////////////////////////////////////
void descrambling_NPUSCH_data_NB_IoT(LTE_DL_FRAME_PARMS *fp,
int16_t *ulsch_llr,
int16_t *y,
uint8_t Qm,
unsigned int Cmux,
uint32_t rnti_tmp,
uint8_t rx_subframe,
uint32_t rx_frame)
{
unsigned int j,jj;
uint32_t x1, x2, s=0;
uint8_t reset;
x2 = (rnti_tmp<<14) + (rx_subframe<<9) + ((rx_frame%2)<<13) + fp->Nid_cell; //this is c_init in 36.211 Sec 10.1.3.1
reset = 1;
switch (Qm)
{
case 1:
jj=0;
for (j=0; j<Cmux; j++)
{
if (j%32==0)
{
s = lte_gold_generic(&x1, &x2, reset);
// printf("lte_gold[%d]=%x\n",i,s);
reset = 0;
}
if (((s>>(j%32))&1)==0)
{
y[j] = (ulsch_llr[jj<<1]>>1) + (ulsch_llr[(jj<<1)+1]>>1);
jj+=2;
} else {
y[j] = -(ulsch_llr[jj<<1]>>1) + (ulsch_llr[(jj<<1)+1]>>1);
jj+=2;
}
}
break;
case 2:
for (j=0; j<Cmux*2; j++)
{
if (j%32==0)
{
s = lte_gold_generic(&x1, &x2, reset);
// printf("lte_gold[%d]=%x\n",i,s);
reset = 0;
}
if (((s>>(j%32))&1)==0)
{
y[j] = -ulsch_llr[j];
} else {
y[j] = ulsch_llr[j];
}
}
break;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
......@@ -1423,16 +1492,12 @@ void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
NB_IoT_eNB_NULSCH_t *ulsch_NB_IoT = eNB->ulsch_NB_IoT[0];
NB_IoT_UL_eNB_HARQ_t *ulsch_harq = ulsch_NB_IoT->harq_process;
int16_t *ulsch_llr = eNB->pusch_vars[0]->llr; // eNB->pusch_vars[eNB_id]->llr; //UE_id=0
unsigned int A = (ulsch_harq->TBS)*8;
uint8_t rvdx = ulsch_harq->rvidx;
unsigned int j,j2; //i2,
int iprime;
int r,Kr;
unsigned int sumKr=0;
//unsigned int sumKr=0;
unsigned int G,H,Hprime,Hpp,Cmux,Rmux_prime; // Q_CQI,Q_RI=0
uint32_t x1, x2, s=0;
int16_t y[6*14*1200] __attribute__((aligned(32)));
......@@ -1443,6 +1508,7 @@ void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
if (npusch_format == 0)
{
int16_t *ulsch_llr = eNB->pusch_vars[0]->llr; // eNB->pusch_vars[eNB_id]->llr; //UE_id=0
// NB-IoT ///////////////////////////////////////////////
// x1 is set in lte_gold_generic
// x2 should not reinitialized each subframe
......@@ -1466,20 +1532,6 @@ void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
&ulsch_harq->F);
}
sumKr = 0;
for (r=0; r<ulsch_harq->C; r++)
{
if (r<ulsch_harq->Cminus)
{
Kr = ulsch_harq->Kminus;
}else{
Kr = ulsch_harq->Kplus;
}
sumKr += Kr;
}
ulsch_harq->G = G;
H = G ;
Hprime = H/Qm;
......@@ -1493,37 +1545,15 @@ void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
memset(ytag,0,Cmux*Rmux_prime);
memset(y,LTE_NULL_NB_IoT,Qm*Hpp);
x2 = (rnti_tmp<<14) + (ulsch_NB_IoT->Msg3_subframe<<9) + ((ulsch_NB_IoT->Msg3_frame%2)<<13) + fp->Nid_cell; //this is c_init in 36.211 Sec 10.1.3.1
reset = 1;
switch (Qm)
{
case 1:
for (j=0; j<Cmux; j++) // 3.75 KHz
{
//y[j] = cseq[j]*ulsch_llr[j]; /// To be defined for bpsk
}
break;
case 2:
for (j=0; j<Cmux*2; j++)
{
if (j%32==0)
{
s = lte_gold_generic(&x1, &x2, reset);
// printf("lte_gold[%d]=%x\n",i,s);
reset = 0;
}
if (((s>>(j%32))&1)==0)
{
y[j] = -ulsch_llr[j];
} else {
descrambling_NPUSCH_data_NB_IoT(fp,
ulsch_llr,
y,
Qm,
Cmux,
rnti_tmp,
ulsch_NB_IoT->Msg3_subframe,
ulsch_NB_IoT->Msg3_frame);
y[j] = ulsch_llr[j];
}
}
break;
}
///////////////////////////////// desin multi-tone
//if multi-RU
/// deinterleaving
......@@ -1542,10 +1572,10 @@ void decode_NPUSCH_msg_NB_IoT(PHY_VARS_eNB *eNB,
ep[6] = yp[6];
ep[7] = yp[7];
}
/// decoding
/// turbo decoding
r=0;
Kr=0;
unsigned int r_offset=0,Kr_bytes,iind;
unsigned int r_offset=0,Kr_bytes,iind=0;
uint8_t crc_type;
int offset = 0;
int16_t dummy_w[MAX_NUM_ULSCH_SEGMENTS_NB_IoT][3*(6144+64)];
......@@ -1802,7 +1832,7 @@ uint8_t rx_ulsch_Gen_NB_IoT(PHY_VARS_eNB *eNB,
{
LTE_eNB_PUSCH *pusch_vars = eNB->pusch_vars[UE_id];
LTE_eNB_COMMON *common_vars = &eNB->common_vars;
//LTE_eNB_COMMON *common_vars = &eNB->common_vars;
//NB_IoT_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
// NB_IoT_eNB_NULSCH_t **ulsch_NB_IoT = &eNB->ulsch_NB_IoT[0];//[0][0];
......
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