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Commit 42e4dce7 authored by Raymond Knopp's avatar Raymond Knopp
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testing and modifications with external 10 MHz clock reference

parent 427eabb8
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Showing with 82 additions and 24 deletions
openair1/PHY/LTE_ESTIMATION/lte_sync_time.c
View file @ 42e4dce7
......@@ -54,7 +54,7 @@ int lte_sync_time_init(LTE_DL_FRAME_PARMS *frame_parms ) // LTE_UE_COMMON *com
int i,k;
sync_corr_ue0 = (int32_t *)malloc16(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(int32_t)*frame_parms->samples_per_tti);
sync_corr_ue1 = (int32_t *)malloc16(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(int32_t)*frame_parms->samples_per_tti);
sync_corr_ue1 = (int32_t *)malloc16(4*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(int32_t)*frame_parms->samples_per_tti);
sync_corr_ue2 = (int32_t *)malloc16(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(int32_t)*frame_parms->samples_per_tti);
if (sync_corr_ue0) {
......@@ -708,14 +708,15 @@ int lte_sync_timeSL(PHY_VARS_UE *ue,
}
sync_corr0[nprime]=magtmp0;
sync_corr1[nprime]=magtmp1;
if (n<FRAME_LENGTH_COMPLEX_SAMPLES) sync_corr_ue1[n] = magtmp1;
if (n<4*FRAME_LENGTH_COMPLEX_SAMPLES) sync_corr_ue1[n] = magtmp1;
}
avg0/=(length/4);
avg1/=(length/4);
// PSS in symbol 1
int pssoffset = frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples0;
printf("maxpos1 = %d, pssoffset = %d\n",maxpos1,pssoffset);
if (maxlev0 > maxlev1) {
if ((int64_t)maxlev0 > (5*avg0)) {*lev = maxlev0; *ind=0; *avg=avg0; return((length+maxpos0-pssoffset)%length);};
}
......
openair1/PHY/LTE_TRANSPORT/slbch.c
View file @ 42e4dce7
......@@ -42,6 +42,8 @@
#define PSBCH_A 40
#define PSBCH_E 1008 //12REs/PRB*6PRBs*7symbols*2 bits/RB
#define PSBCH_DEBUG 1
......@@ -150,6 +152,8 @@ int rx_psbch(PHY_VARS_UE *ue) {
ru_tmp.common.rxdata_7_5kHz[aa] = (int32_t*)&ue->common_vars.rxdata_syncSL[aa][ue->rx_offsetSL*2];
ru_tmp.common.rxdataF = (int32_t**)rxdataF;
ru_tmp.nb_rx = ue->frame_parms.nb_antennas_rx;
LOG_I(PHY,"Running PBCH detection with Nid_SL %d\n",ue->frame_parms.Nid_SL);
for (int l=0; l<11; l++) {
slot_fep_ul(&ru_tmp,l%7,(l>6)?1:0,0);
......
openair1/PHY/LTE_TRANSPORT/slsss.c
View file @ 42e4dce7
......@@ -100,7 +100,7 @@ int slpss_ch_est(PHY_VARS_UE *ue,
{
int16_t *pss;
int16_t *pss0_ext2,*sss0_ext2,*sss0_ext3,*sss1_ext3,tmp_re,tmp_im,tmp0_re2,tmp0_im2,tmp1_re2,tmp1_im2;
int16_t *pss0_ext2,*sss0_ext2,*sss0_ext3,*sss1_ext3,tmp0_re,tmp0_im,tmp1_re,tmp1_im,tmp0_re2,tmp0_im2,tmp1_re2,tmp1_im2;
int16_t *pss1_ext2,*sss1_ext2;
uint8_t aarx,i;
......@@ -134,19 +134,22 @@ int slpss_ch_est(PHY_VARS_UE *ue,
for (i=0; i<62; i++) {
// This is H*(PSS) = R* \cdot PSS
tmp_re = (int16_t)((((pss0_ext2[i<<1]+pss1_ext2[i<<1]) * (int32_t)pss[i<<1])>>15) + (((pss0_ext2[1+(i<<1)]+pss1_ext2[1+(i<<1)]) * (int32_t)pss[1+(i<<1)])>>15));
tmp_im = (int16_t)((((pss0_ext2[i<<1]+pss1_ext2[i<<1]) * (int32_t)pss[1+(i<<1)])>>15) - (((pss0_ext2[1+(i<<1)]+pss1_ext2[1+(i<<1)]) * (int32_t)pss[(i<<1)])>>15));
tmp0_re = (int16_t)((((pss0_ext2[i<<1]) * (int32_t)pss[i<<1])>>15) + (((pss0_ext2[1+(i<<1)]) * (int32_t)pss[1+(i<<1)])>>15));
tmp0_im = (int16_t)((((pss0_ext2[i<<1]) * (int32_t)pss[1+(i<<1)])>>15) - (((pss0_ext2[1+(i<<1)]) * (int32_t)pss[(i<<1)])>>15));
tmp1_re = (int16_t)((((pss1_ext2[i<<1]) * (int32_t)pss[i<<1])>>15) + (((pss1_ext2[1+(i<<1)]) * (int32_t)pss[1+(i<<1)])>>15));
tmp1_im = (int16_t)((((pss1_ext2[i<<1]) * (int32_t)pss[1+(i<<1)])>>15) - (((pss1_ext2[1+(i<<1)]) * (int32_t)pss[(i<<1)])>>15));
// printf("H*(%d,%d) : (%d,%d)\n",aarx,i,tmp_re,tmp_im);
// This is R(SSS0) \cdot H*(PSS)
tmp0_re2 = (int16_t)(((tmp_re * (int32_t)sss0_ext2[i<<1])>>15) -
((tmp_im * (int32_t)sss0_ext2[1+(i<<1)])>>15));
tmp0_im2 = (int16_t)(((tmp_re * (int32_t)sss0_ext2[1+(i<<1)])>>15) +
((tmp_im * (int32_t)sss0_ext2[(i<<1)])>>15));
tmp0_re2 = (int16_t)(((tmp0_re * (int32_t)sss0_ext2[i<<1])>>12) -
((tmp0_im * (int32_t)sss0_ext2[1+(i<<1)])>>12));
tmp0_im2 = (int16_t)(((tmp0_re * (int32_t)sss0_ext2[1+(i<<1)])>>12) +
((tmp0_im * (int32_t)sss0_ext2[(i<<1)])>>12));
// This is R(SSS1) \cdot H*(PSS)
tmp1_re2 = (int16_t)(((tmp_re * (int32_t)sss1_ext2[i<<1])>>15) -
((tmp_im * (int32_t)sss1_ext2[1+(i<<1)])>>15));
tmp1_im2 = (int16_t)(((tmp_re * (int32_t)sss1_ext2[1+(i<<1)])>>15) +
((tmp_im * (int32_t)sss1_ext2[(i<<1)])>>15));
tmp1_re2 = (int16_t)(((tmp1_re * (int32_t)sss1_ext2[i<<1])>>12) -
((tmp1_im * (int32_t)sss1_ext2[1+(i<<1)])>>12));
tmp1_im2 = (int16_t)(((tmp1_re * (int32_t)sss1_ext2[1+(i<<1)])>>12) +
((tmp1_im * (int32_t)sss1_ext2[(i<<1)])>>12));
// printf("SSSi(%d,%d) : (%d,%d)\n",aarx,i,sss_ext2[i<<1],sss_ext2[1+(i<<1)]);
// printf("SSSo(%d,%d) : (%d,%d)\n",aarx,i,tmp_re2,tmp_im2);
......@@ -342,8 +345,8 @@ int rx_slsss(PHY_VARS_UE *ue,int32_t *tot_metric,uint8_t *phase_max,int Nid2)
0);
// write_output("rxdataF0.m","rxF0",&rxdataF[0][0],2*14*ue->frame_parms.ofdm_symbol_size,1,1);
// write_output("pss0_ext.m","pss0ext",pss0_ext,72,1,1);
// write_output("sss0_ext.m","sss0ext",sss0_ext,72,1,1);
write_output("pss0_ext.m","pss0ext",pss0_ext,72,1,1);
write_output("sss0_ext.m","sss0ext",sss0_ext,72,1,1);
// exit(-1);
......@@ -357,7 +360,8 @@ int rx_slsss(PHY_VARS_UE *ue,int32_t *tot_metric,uint8_t *phase_max,int Nid2)
sss1_ext,
Nid2);
// write_output("sss0_comp0.m","sss0comp0",sss0_ext,72,1,1);
write_output("sss0_comp0.m","sss0comp0",sss0_ext,72,1,1);
write_output("sss1_comp0.m","sss1comp0",sss1_ext,72,1,1);
// exit(-1);
// now do the SSS detection based on the precomputed sequences in PHY/LTE_TRANSPORT/sss.h
......@@ -377,8 +381,8 @@ int rx_slsss(PHY_VARS_UE *ue,int32_t *tot_metric,uint8_t *phase_max,int Nid2)
// This is the inner product using one particular value of each unknown parameter
for (i=0; i<62; i++) {
metric +=
(int16_t)(((d0[i]*((((phaseSL_re[phase]*(int32_t)sss0[i<<1])>>19)-((phaseSL_im[phase]*(int32_t)sss0[1+(i<<1)])>>19)))))) +
(int16_t)(((d5[i]*((((phaseSL_re[phase]*(int32_t)sss1[i<<1])>>19)-((phaseSL_im[phase]*(int32_t)sss1[1+(i<<1)])>>19))))));
(int16_t)(((d0[i]*((((phaseSL_re[phase]*(int32_t)sss0[i<<1])>>15)-((phaseSL_im[phase]*(int32_t)sss0[1+(i<<1)])>>15)))))) +
(int16_t)(((d5[i]*((((phaseSL_re[phase]*(int32_t)sss1[i<<1])>>15)-((phaseSL_im[phase]*(int32_t)sss1[1+(i<<1)])>>15))))));
}
// if the current metric is better than the last save it
......
targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
View file @ 42e4dce7
......@@ -1066,7 +1066,6 @@ extern "C" {
}
else{
s->usrp->set_clock_source("external");
s->usrp->set_time_source("external");
}
device->type = USRP_B200_DEV;
......
targets/RT/USER/lte-ue.c
View file @ 42e4dce7
......@@ -635,6 +635,8 @@ static void *UE_thread_synch(void *arg)
return &UE_thread_synch_retval;
}
extern int32_t* sync_corr_ue1;
static void *UE_thread_synchSL(void *arg)
{
static int UE_thread_synch_retval;
......@@ -702,14 +704,62 @@ static void *UE_thread_synchSL(void *arg)
// the thread waits here most of the time
pthread_cond_wait( &UE->proc.cond_synchSL, &UE->proc.mutex_synchSL );
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synchSL), "");
LOG_I(PHY,"Running initial synch with carrier offset %d, ue_scan_carrier %d\n",freq_offset,UE->UE_scan_carrier);
// Do initial synch here
if (initial_syncSL(UE) >= 0) LOG_I(PHY,"Found SynchRef UE\n");
if (initial_syncSL(UE) >= 0) {
LOG_I(PHY,"Found SynchRef UE\n");
// rerun with new cell parameters and frequency-offset
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;//-USRP_GAIN_OFFSET;
if (UE->UE_scan_carrier == 1) {
if (freq_offset >= 0)
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] += abs(UE->common_vars.freq_offset);
else
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] -= abs(UE->common_vars.freq_offset);
freq_offset=0;
}
}
UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
//UE->rfdevice.trx_set_gains_func(&openair0,&openair0_cfg[0]);
//UE->rfdevice.trx_stop_func(&UE->rfdevice);
sleep(1);
if (UE->UE_scan_carrier == 1) {
UE->UE_scan_carrier = 0;
} else {
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
UE->is_synchronizedSL = 1;
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
}
}
else {
LOG_I(PHY,"No SynchRefUE found\n");
LOG_I(PHY,"No SynchRefUE found\n");
/*
write_output("rxsig0.m","rxs0",&UE->common_vars.rxdata_syncSL[0][0],40*UE->frame_parms.samples_per_tti,1,1);
write_output("corr.m","corr1",sync_corr_ue1,40*UE->frame_parms.samples_per_tti,1,2);
exit(-1);
}
*/
if (UE->UE_scan_carrier == 1) {
if (freq_offset>=0)
freq_offset+=100;
freq_offset*=-1;
if (abs(freq_offset) > 7500)
AssertFatal(1==0, "[initial_sync] No cell synchronization found, abandoning\n" );
}
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = (double)UE->frame_parms.ul_CarrierFreq+freq_offset;
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] = (double)UE->frame_parms.ul_CarrierFreq+freq_offset;
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;//-USRP_GAIN_OFFSET;
if (UE->UE_scan_carrier==1)
openair0_cfg[UE->rf_map.card].autocal[UE->rf_map.chain+i] = 1;
}
LOG_I(PHY,"Setting USRP freq to %f\n",openair0_cfg[UE->rf_map.card].rx_freq[0]);
UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
}
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synchSL), "");
UE->proc.instance_cnt_synchSL--;
UE->is_synchronizedSL = 0;
......
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