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

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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
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@@ -216,8 +216,8 @@ int lte_est_timing_advance_pusch(PHY_VARS_eNB* phy_vars_eNB,uint8_t UE_id,uint8_
temp = 0; temp = 0;
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) { for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
Re = ((int16_t*)ul_ch_estimates_time[aa])[(i<<2)]; Re = ((int16_t*)ul_ch_estimates_time[aa])[(i<<1)];
Im = ((int16_t*)ul_ch_estimates_time[aa])[1+(i<<2)]; Im = ((int16_t*)ul_ch_estimates_time[aa])[1+(i<<1)];
temp += (Re*Re/2) + (Im*Im/2); 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 // filter position to reduce jitter
if (first_run == 1) { if (first_run == 1) {
openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
+6 -7
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@@ -253,25 +253,25 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
switch(frame_parms->N_RB_DL) { switch(frame_parms->N_RB_DL) {
case 6: case 6:
dft128((int16_t*) temp_in_ifft_0, idft128((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa], (int16_t*) ul_ch_estimates_time[aa],
1); 1);
break; break;
case 25: case 25:
dft512((int16_t*) temp_in_ifft_0, idft512((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa], (int16_t*) ul_ch_estimates_time[aa],
1); 1);
break; break;
case 50: case 50:
dft1024((int16_t*) temp_in_ifft_0, idft1024((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa], (int16_t*) ul_ch_estimates_time[aa],
1); 1);
break; break;
case 100: case 100:
dft2048((int16_t*) temp_in_ifft_0, idft2048((int16_t*) temp_in_ifft_0,
(int16_t*) ul_ch_estimates_time[aa], (int16_t*) ul_ch_estimates_time[aa],
1); 1);
break; break;
@@ -283,9 +283,9 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
if (Ns == 0) { if (Ns == 0) {
write_output("rxdataF_ext.m","rxF_ext",&rxdataF_ext[aa][symbol_offset],512*2,2,1); 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("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 } 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 #endif
@@ -467,7 +467,6 @@ int32_t lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
if((aa == 0)&& (cooperation_flag == 2)) { if((aa == 0)&& (cooperation_flag == 2)) {
write_output("test1.m","t1",temp_in_ifft_0,512,1,1); 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",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("test3.m","t3",temp_in_fft_0,512,1,1);
write_output("test4.m","t4",temp_out_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); 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" #include "LAYER2/MAC/extern.h"
//uint8_t ncs_cell[20][7]; //uint8_t ncs_cell[20][7];
#define DEBUG_PUCCH_TX //#define DEBUG_PUCCH_TX
#define DEBUG_PUCCH_RX //#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, 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, 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) { if (chest_t != NULL) {
ymax = 0; ymax = 0;
if (chest_t[0] !=NULL) { if (chest_t[0] !=NULL) {
for (i=0; i<(frame_parms->ofdm_symbol_size); i++) { 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) if (chest_t_abs[0][i] > ymax)
ymax = chest_t_abs[0][i]; 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++) { for (arx=1; arx<nb_antennas_rx; arx++) {
if (chest_t[arx] !=NULL) { if (chest_t[arx] !=NULL) {
for (i=0; i<(frame_parms->ofdm_symbol_size>>3); i++) { 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) if (chest_t_abs[arx][i] > ymax)
ymax = chest_t_abs[arx][i]; 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; // uint32_t frame = PHY_vars_UE_g[Mod_id]->frame;
if ((timing_advance>>5) & 1) //it is negative // timing advance has Q1.5 format
timing_advance = timing_advance - (1<<6); timing_advance = timing_advance - (1<<5);
if (openair_daq_vars.manual_timing_advance == 0) { if (openair_daq_vars.manual_timing_advance == 0) {
//if ( (frame % 100) == 0) { //if ( (frame % 100) == 0) {
//if ((timing_advance > 3) || (timing_advance < -3) ) //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); 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- openair_daq_vars.timing_advance-
phy_vars_ue->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); 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, phy_vars_ue->rx_offset,
openair_daq_vars.timing_advance, openair_daq_vars.timing_advance,
phy_vars_ue->timing_advance, phy_vars_ue->timing_advance,
phy_vars_ue->N_TA_offset); 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 ) { if (generate_ul_signal == 1 ) {