maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fixed UL time domain channel estimation (was using the dft instead of idft) and removed repeated format issues

Browse Source 
fixed bug in timing advance procedures in UE and eNB


git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7446 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Florian Kaltenberger
2015-05-20 11:10:09 +00:00
parent 29f7909446
commit faf8953da6
5 changed files with 24 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/LTE_ESTIMATION/lte_adjust_sync.c
+4 -2
View File
@@ -216,8 +216,8 @@ int lte_est_timing_advance_pusch(PHY_VARS_eNB* phy_vars_eNB,uint8_t UE_id,uint8_
temp = 0;
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
Re = ((int16_t*)ul_ch_estimates_time[aa])[(i<<2)];
Im = ((int16_t*)ul_ch_estimates_time[aa])[1+(i<<2)];
Re = ((int16_t*)ul_ch_estimates_time[aa])[(i<<1)];
Im = ((int16_t*)ul_ch_estimates_time[aa])[1+(i<<1)];
temp += (Re*Re/2) + (Im*Im/2);
}
@@ -227,6 +227,8 @@ int lte_est_timing_advance_pusch(PHY_VARS_eNB* phy_vars_eNB,uint8_t UE_id,uint8_
}
}
if (max_pos>frame_parms->ofdm_symbol_size/2)
max_pos = max_pos-frame_parms->ofdm_symbol_size;
// filter position to reduce jitter
if (first_run == 1) {
openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
+6 -7
View File
@@ -253,25 +253,25 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
switch(frame_parms->N_RB_DL) {
case 6:
dft128((int16_t*) temp_in_ifft_0,
idft128((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa],
1);
break;
case 25:
dft512((int16_t*) temp_in_ifft_0,
idft512((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa],
1);
break;
case 50:
dft1024((int16_t*) temp_in_ifft_0,
idft1024((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa],
1);
break;
case 100:
dft2048((int16_t*) temp_in_ifft_0,
idft2048((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa],
1);
break;
@@ -283,9 +283,9 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
if (Ns == 0) {
write_output("rxdataF_ext.m","rxF_ext",&rxdataF_ext[aa][symbol_offset],512*2,2,1);
write_output("tmpin_ifft.m","drs_in",temp_in_ifft_0,512,1,1);
write_output("drs_est0.m","drs0",ul_ch_estimates_time[aa],512*2,2,1);
write_output("drs_est0.m","drs0",ul_ch_estimates_time[aa],512,1,1);
} else
write_output("drs_est1.m","drs1",ul_ch_estimates_time[aa],512*2,2,1);
write_output("drs_est1.m","drs1",ul_ch_estimates_time[aa],512,1,1);
}
#endif
@@ -467,7 +467,6 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
if((aa == 0)&& (cooperation_flag == 2)) {
write_output("test1.m","t1",temp_in_ifft_0,512,1,1);
write_output("test2.m","t2",temp_out_ifft_0,512*2,2,1);
// write_output("test2.m","t2",ul_ch_estimates_time[aa],512*2,2,1);
write_output("test3.m","t3",temp_in_fft_0,512,1,1);
write_output("test4.m","t4",temp_out_fft_0,512,1,1);
write_output("test5.m","t5",temp_in_fft_1,512,1,1);
openair1/PHY/LTE_TRANSPORT/pucch.c
+2 -2
View File
@@ -42,8 +42,8 @@
#include "LAYER2/MAC/extern.h"
//uint8_t ncs_cell[20][7];
#define DEBUG_PUCCH_TX
#define DEBUG_PUCCH_RX
//#define DEBUG_PUCCH_TX
//#define DEBUG_PUCCH_RX
int16_t cfo_pucch_np[24*7] = {20787,-25330,27244,-18205,31356,-9512,32767,0,31356,9511,27244,18204,20787,25329,
27244,-18205,30272,-12540,32137,-6393,32767,0,32137,6392,30272,12539,27244,18204,
openair1/PHY/TOOLS/lte_phy_scope.c
+3 -3
View File
@@ -209,13 +209,13 @@ void phy_scope_eNB(FD_lte_phy_scope_enb *form,
}
}
// Channel Impulse Response (still repeated format)
// Channel Impulse Response
if (chest_t != NULL) {
ymax = 0;
if (chest_t[0] !=NULL) {
for (i=0; i<(frame_parms->ofdm_symbol_size); i++) {
chest_t_abs[0][i] = (float) (chest_t[0][4*i]*chest_t[0][4*i]+chest_t[0][4*i+1]*chest_t[0][4*i+1]);
chest_t_abs[0][i] = (float) (chest_t[0][2*i]*chest_t[0][2*i]+chest_t[0][2*i+1]*chest_t[0][2*i+1]);
if (chest_t_abs[0][i] > ymax)
ymax = chest_t_abs[0][i];
@@ -227,7 +227,7 @@ void phy_scope_eNB(FD_lte_phy_scope_enb *form,
for (arx=1; arx<nb_antennas_rx; arx++) {
if (chest_t[arx] !=NULL) {
for (i=0; i<(frame_parms->ofdm_symbol_size>>3); i++) {
chest_t_abs[arx][i] = (float) (chest_t[arx][4*i]*chest_t[arx][4*i]+chest_t[arx][4*i+1]*chest_t[arx][4*i+1]);
chest_t_abs[arx][i] = (float) (chest_t[arx][2*i]*chest_t[arx][2*i]+chest_t[arx][2*i+1]*chest_t[arx][2*i+1]);
if (chest_t_abs[arx][i] > ymax)
ymax = chest_t_abs[arx][i];
openair1/SCHED/phy_procedures_lte_ue.c
+9 -9
View File
@@ -342,15 +342,13 @@ void process_timing_advance(uint8_t Mod_id,uint8_t CC_id,int16_t timing_advance)
// uint32_t frame = PHY_vars_UE_g[Mod_id]->frame;
if ((timing_advance>>5) & 1) //it is negative
timing_advance = timing_advance - (1<<6);
// timing advance has Q1.5 format
timing_advance = timing_advance - (1<<5);
if (openair_daq_vars.manual_timing_advance == 0) {
//if ( (frame % 100) == 0) {
//if ((timing_advance > 3) || (timing_advance < -3) )
PHY_vars_UE_g[Mod_id][CC_id]->timing_advance = cmax(0,(int)PHY_vars_UE_g[Mod_id][CC_id]->timing_advance+timing_advance*4);
//}
PHY_vars_UE_g[Mod_id][CC_id]->timing_advance = PHY_vars_UE_g[Mod_id][CC_id]->timing_advance+timing_advance*4; //this is for 25RB only!!!
}
LOG_D(PHY,"[UE %d] Got timing advance %d from MAC, new value %d\n",Mod_id, timing_advance, PHY_vars_UE_g[Mod_id][CC_id]->timing_advance);
@@ -1203,15 +1201,17 @@ void phy_procedures_UE_TX(PHY_VARS_UE *phy_vars_ue,uint8_t eNB_id,uint8_t abstra
openair_daq_vars.timing_advance-
phy_vars_ue->timing_advance-
phy_vars_ue->N_TA_offset+5)%(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*frame_parms->samples_per_tti);
LOG_D(PHY,"[UE %d] Frame %d, subframe %d: ulsch_start = %d (rxoff %d, HW TA %d, TA %d, TA_offset %d\n",
#else //this is the normal case
ulsch_start = (frame_parms->samples_per_tti*subframe_tx)-phy_vars_ue->N_TA_offset; //-phy_vars_ue->timing_advance;
#endif //else EXMIMO
LOG_D(PHY,"[UE %d] Frame %d, subframe %d: ulsch_start = %d (rxoff %d, HW TA %d, timing advance %d, TA_offset %d\n",
Mod_id,frame_tx,subframe_tx,
ulsch_start,
phy_vars_ue->rx_offset,
openair_daq_vars.timing_advance,
phy_vars_ue->timing_advance,
phy_vars_ue->N_TA_offset);
#else //this is the normal case
ulsch_start = (frame_parms->samples_per_tti*subframe_tx)-phy_vars_ue->N_TA_offset;
#endif //else EXMIMO
if (generate_ul_signal == 1 ) {