Commit a653258c authored by knopp's avatar knopp

Merge remote-tracking branch 'origin/develop-nr' into nr-polar-encoder-optimizations

parents 956fced1 732829f3
#!/bin/sh
echo "building ctags for openair1 and openair2 ..."
ctags -e -R --exclude=openair1/DOCS/ --exclude=openair2/DOCS/ --exclude=openair2/RRC/CELLULAR/ --exclude=openair2/NAS/DRIVER/CELLULAR/ --exclude=openair2/SIMULATION/ --exclude=targets/DOCS/ --exclude=targets/PROJECTS/ openair1 openair2 openair3 targets cmake_targets common
ctags -e -R --exclude=openair1/DOCS/ --exclude=openair2/DOCS/ --exclude=openair2/RRC/CELLULAR/ --exclude=openair2/NAS/DRIVER/CELLULAR/ --exclude=openair2/SIMULATION/ --exclude=targets/DOCS/ --exclude=targets/PROJECTS/ openair1 openair2 openair3 targets cmake_targets common nfapi
......@@ -24,7 +24,7 @@
void nr_init_pbch_dmrs(PHY_VARS_gNB* gNB)
{
unsigned int x1, x2;
unsigned char Nid, i_ssb, i_ssb2;
uint16_t Nid, i_ssb, i_ssb2;
unsigned char Lmax, l, n_hf, N_hf;
nfapi_nr_config_request_t *cfg = &gNB->gNB_config;
NR_DL_FRAME_PARMS *fp = &gNB->frame_parms;
......
......@@ -22,7 +22,7 @@
/*! \file PHY/NR_TRANSPORT/nr_pbch.c
* \brief Top-level routines for generating the PBCH/BCH physical/transport channel V15.1 03/2018
* \author Guy De Souza
* \thanks Special Thanks to Son Dang for helpfull contributions and testing
* \thanks Special Thanks to Son Dang for helpful contributions and testing
* \date 2018
* \version 0.1
* \company Eurecom
......@@ -190,7 +190,6 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
s = lte_gold_generic(&x1, &x2, reset);
reset = 0;
}
pbch->pbch_a_prime ^= (((pbch->pbch_a_interleaved>>i)&1) ^ ((s>>((k+offset)&0x1f))&1))<<i;
k++; /// k increase only when payload bit is not special bit
}
......
......@@ -458,22 +458,28 @@ void nr_pbch_unscrambling(NR_UE_PBCH *pbch,
offset = (nushift*M)&0x1f;
for (int i=0; i<length; i++) {
if (((i+offset)&0x1f)==0) {
/*if (((i+offset)&0x1f)==0) {
s = lte_gold_generic(&x1, &x2, reset);
reset = 0;
}*/
if (bitwise) {
if (((k+offset)&0x1f)==0 && (!((unscrambling_mask>>i)&1))) {
s = lte_gold_generic(&x1, &x2, reset);
reset = 0;
}
(pbch->pbch_a_interleaved) ^= ((unscrambling_mask>>i)&1)? ((pbch->pbch_a_prime>>i)&1)<<i : (((pbch->pbch_a_prime>>i)&1) ^ ((s>>((k+offset)&0x1f))&1))<<i;
k += (!((unscrambling_mask>>i)&1));
#ifdef DEBUG_PBCH_ENCODING
if (i<8)
printf("s: %04x\t", s);
printf("pbch_a_interleaved 0x%08x\n", pbch->pbch_a_interleaved);
printf("i %d k %d offset %d (unscrambling_mask>>i)&1) %d s: %08x\t pbch_a_interleaved 0x%08x (!((unscrambling_mask>>i)&1)) %d\n", i, k, offset, (unscrambling_mask>>i)&1, s, pbch->pbch_a_interleaved, (!((unscrambling_mask>>i)&1)));
#endif
if (bitwise) {
(pbch->pbch_a_interleaved) ^= ((unscrambling_mask>>i)&1)? ((pbch->pbch_a_prime>>i)&1)<<i : (((pbch->pbch_a_prime>>i)&1) ^ ((s>>((k+offset)&0x1f))&1))<<i;
k+=!((unscrambling_mask>>i)&1);
}
else {
if (((i+offset)&0x1f)==0) {
s = lte_gold_generic(&x1, &x2, reset);
reset = 0;
}
if (((s>>((i+offset)&0x1f))&1)==1)
demod_pbch_e[i] = -demod_pbch_e[i];
#ifdef DEBUG_PBCH_ENCODING
......@@ -508,7 +514,7 @@ unsigned char sign(int8_t x) {
}
*/
uint8_t pbch_deinterleaving_pattern[32] = {28,0,31,30,7,29,25,27,5,8,24,9,10,11,12,13,1,4,3,14,15,16,17,2,26,18,19,20,21,22,30,23};
uint8_t pbch_deinterleaving_pattern[32] = {28,0,31,30,7,29,25,27,5,8,24,9,10,11,12,13,1,4,3,14,15,16,17,2,26,18,19,20,21,22,6,23};
int nr_rx_pbch( PHY_VARS_NR_UE *ue,
UE_nr_rxtx_proc_t *proc,
......@@ -670,14 +676,13 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
if(decoderState > 0) return(decoderState);
printf("polar decoder output 0x%08x\n",nr_ue_pbch_vars->pbch_a_prime);
//printf("polar decoder output 0x%08x\n",nr_ue_pbch_vars->pbch_a_prime);
//payload un-scrambling
memset(&nr_ue_pbch_vars->pbch_a_interleaved, 0, sizeof(uint32_t) );
M = (Lmax == 64)? (NR_POLAR_PBCH_PAYLOAD_BITS - 6) : (NR_POLAR_PBCH_PAYLOAD_BITS - 3);
nushift = ((nr_ue_pbch_vars->pbch_a_prime>>24)&1) ^ (((nr_ue_pbch_vars->pbch_a_prime>>6)&1)<<1);
nr_pbch_unscrambling(nr_ue_pbch_vars,frame_parms->Nid_cell,nushift,M,NR_POLAR_PBCH_PAYLOAD_BITS,1,unscrambling_mask);
printf("nushift %d sfn 3rd %d 2nd %d", nushift,((nr_ue_pbch_vars->pbch_a_prime>>6)&1), ((nr_ue_pbch_vars->pbch_a_prime>>24)&1) );
//payload deinterleaving
//uint32_t in=0;
......
......@@ -47,6 +47,15 @@ typedef struct {
uint32_t pbch_e[NR_POLAR_PBCH_E_DWORD];
} NR_gNB_PBCH;
typedef struct {
uint8_t ssb_start_symbol;
uint8_t n_hf;
uint8_t Lmax;
uint8_t ssb_index;
int32_t sfn;
} NR_PBCH_parms_t;
typedef struct {
/// Length of DCI payload in bits
uint16_t size;
......
......@@ -99,7 +99,7 @@ int main(int argc, char **argv)
int freq_offset;
// int subframe_offset;
// char fname[40], vname[40];
int trial,n_trials=1,n_errors,n_errors2,n_alamouti;
int trial,n_trials=1,n_errors,n_errors_payload;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
......@@ -128,7 +128,7 @@ int main(int argc, char **argv)
NR_DL_FRAME_PARMS *frame_parms;
nfapi_nr_config_request_t *gNB_config;
int ret;
int ret, payload_ret=0;
int run_initial_sync=0;
int loglvl=OAILOG_WARNING;
......@@ -499,8 +499,7 @@ int main(int argc, char **argv)
for (SNR=snr0; SNR<snr1; SNR+=.2) {
n_errors = 0;
n_errors2 = 0;
n_alamouti = 0;
n_errors_payload = 0;
for (trial=0; trial<n_trials; trial++) {
......@@ -567,13 +566,31 @@ int main(int argc, char **argv)
SISO,
UE->high_speed_flag);
if (ret==0) {
//UE->rx_ind.rx_indication_body->mib_pdu.ssb_index; //not yet detected automatically
//UE->rx_ind.rx_indication_body->mib_pdu.ssb_length; //Lmax, not yet detected automatically
uint8_t gNB_xtra_byte=0;
for (int i=0; i<8; i++)
gNB_xtra_byte |= ((gNB->pbch.pbch_a>>(31-i))&1)<<(7-i);
payload_ret = (UE->rx_ind.rx_indication_body->mib_pdu.additional_bits == gNB_xtra_byte);
for (i=0;i<3;i++){
payload_ret += (UE->rx_ind.rx_indication_body->mib_pdu.pdu[i] == gNB->pbch_pdu[2-i]);
//printf("pdu byte %d gNB: 0x%02x UE: 0x%02x\n",i,gNB->pbch_pdu[i], UE->rx_ind.rx_indication_body->mib_pdu.pdu[i]);
}
//printf("xtra byte gNB: 0x%02x UE: 0x%02x\n",gNB_xtra_byte, UE->rx_ind.rx_indication_body->mib_pdu.additional_bits);
//printf("ret %d\n", payload_ret);
if (payload_ret!=4)
n_errors_payload++;
}
if (ret<0) n_errors++;
}
} //noise trials
printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR,n_errors,n_trials);
printf("SNR %f: trials %d, n_errors_crc = %d, n_errors_payload %d\n", SNR,n_trials,n_errors,n_errors_payload);
if ((float)n_errors/(float)n_trials <= target_error_rate) {
if (((float)n_errors/(float)n_trials <= target_error_rate) && (n_errors_payload==0)) {
printf("PBCH test OK\n");
break;
}
......
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