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OpenXG-RAN
Commit 97a081b3 authored by Raymond Knopp's avatar Raymond Knopp
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fixed UE measurement / oaisim channel model incompatibility 

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@6650 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent 4be5eae5
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Showing with 107 additions and 83 deletions
openair1/PHY/LTE_ESTIMATION/adjust_gain.c
View file @ 97a081b3
......@@ -48,9 +48,15 @@ phy_adjust_gain (PHY_VARS_UE *phy_vars_ue, uint8_t eNB_id) {
int rssi;
rssi = dB_fixed(phy_vars_ue->PHY_measurements.rssi);
if (rssi>0) rx_power_fil_dB = dB_fixed(phy_vars_ue->PHY_measurements.rssi);
if (rssi>0) rx_power_fil_dB = rssi;
else rx_power_fil_dB = phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id];
printf("Gain control: rssi %d (%d,%d)\n",
rssi,
phy_vars_ue->PHY_measurements.rssi,
phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id]
);
// Gain control with hysterisis
// Adjust gain in phy_vars_ue->rx_vars[0].rx_total_gain_dB
......
openair1/PHY/LTE_TRANSPORT/dci.c
View file @ 97a081b3
......@@ -1904,7 +1904,7 @@ uint8_t generate_dci_top(uint8_t num_ue_spec_dci,
// reset all bits to <NIL>, here we set <NIL> elements as 2
//memset(e, 2, DCI_BITS_MAX);
// here we interpred NIL as a random QPSK sequence. That makes power estimation easier.
// here we interpret NIL as a random QPSK sequence. That makes power estimation easier.
for (i=0;i<DCI_BITS_MAX;i++)
e[i]=taus()&1;
e_ptr = e;
......
openair1/SIMULATION/RF/dac.c
View file @ 97a081b3
......@@ -94,15 +94,15 @@ double dac_fixed_gain(double **s_re,
int aa;
double amp,amp1;
amp = sqrt(NB_RE)*pow(10.0,.05*txpwr_dBm)/sqrt(nb_tx_antennas); //this is amp per tx antenna
amp = //sqrt(NB_RE)*pow(10.0,.05*txpwr_dBm)/sqrt(nb_tx_antennas); //this is amp per tx antenna
pow(10.0,.05*txpwr_dBm)/sqrt(nb_tx_antennas); //this is amp per tx antenna
amp1 = 0;
for (aa=0;aa<nb_tx_antennas;aa++) {
amp1 += sqrt((double)signal_energy((int32_t*)&input[aa][input_offset_meas],length_meas));
amp1 += sqrt((double)signal_energy((int32_t*)&input[aa][input_offset_meas],length_meas)/NB_RE);
}
amp1/=nb_tx_antennas;
//printf("UL: amp1 %f dB (%d,%d), tx_power %f\n",20*log10(amp1),input_offset,input_offset_meas,txpwr_dBm);
// printf("DAC: amp1 %f dB (%d,%d), tx_power %f\n",20*log10(amp1),input_offset,input_offset_meas,txpwr_dBm);
/*
if (nb_tx_antennas==2)
......@@ -124,5 +124,5 @@ double dac_fixed_gain(double **s_re,
// printf("ener %e\n",signal_energy_fp(s_re,s_im,nb_tx_antennas,length,0));
return(signal_energy_fp(s_re,s_im,nb_tx_antennas,length_meas,0));
return(signal_energy_fp(s_re,s_im,nb_tx_antennas,length_meas,0)/NB_RE);
}
targets/SIMU/USER/channel_sim.c
View file @ 97a081b3
......@@ -69,7 +69,7 @@
#include "oaisim.h"
#define RF
//#define DEBUG_SIM
#define DEBUG_SIM
int number_rb_ul;
int first_rbUL ;
......@@ -92,7 +92,8 @@ void do_DL_sig(double **r_re0,double **r_im0,
int32_t **txdata,**rxdata;
uint8_t eNB_id=0;
double tx_pwr, rx_pwr;
double tx_pwr;
double rx_pwr;
int32_t rx_pwr2;
uint32_t i,aa;
uint32_t slot_offset,slot_offset_meas;
......@@ -250,23 +251,23 @@ void do_DL_sig(double **r_re0,double **r_im0,
slot_offset = (next_slot)*(frame_parms->samples_per_tti>>1);
slot_offset_meas = ((next_slot&1)==0) ? slot_offset : (slot_offset-(frame_parms->samples_per_tti>>1));
tx_pwr = dac_fixed_gain(s_re,
s_im,
txdata,
slot_offset,
nb_antennas_tx,
frame_parms->samples_per_tti>>1,
slot_offset_meas,
frame_parms->ofdm_symbol_size,
14,
// enb_data[eNB_id]->tx_power_dBm);
frame_parms->pdsch_config_common.referenceSignalPower,
s_im,
txdata,
slot_offset,
nb_antennas_tx,
frame_parms->samples_per_tti>>1,
slot_offset_meas,
frame_parms->ofdm_symbol_size,
14,
// enb_data[eNB_id]->tx_power_dBm);
frame_parms->pdsch_config_common.referenceSignalPower, // dBm/RE
frame_parms->N_RB_DL*12);
#ifdef DEBUG_SIM
LOG_D(OCM,"[SIM][DL] eNB %d (CCid %d): tx_pwr %f dBm (target %f), for slot %d (subframe %d)\n",
LOG_D(OCM,"[SIM][DL] eNB %d (CCid %d): tx_pwr %.1f dBm/RE (target %d dBm/RE), for slot %d (subframe %d)\n",
eNB_id,CC_id,
10*log10(tx_pwr),
frame_parms->pdsch_config_common.referenceSignalPower+10*log10(12.0*frame_parms->N_RB_DL),
frame_parms->pdsch_config_common.referenceSignalPower,
next_slot,
next_slot>>1);
#endif
......@@ -285,16 +286,24 @@ void do_DL_sig(double **r_re0,double **r_im0,
LOG_D(OCM,"channel(%d,%d)[%d] : (%f,%f)\n",eNB_id,UE_id,i,eNB2UE[eNB_id][UE_id][CC_id]->ch[0][i].x,eNB2UE[eNB_id][UE_id][CC_id]->ch[0][i].y);
#endif
LOG_D(OCM,"[SIM][DL] Channel eNB %d => UE %d (CCid %d): tx_power %f dBm/RE, path_loss %f dB\n",
LOG_D(OCM,"[SIM][DL] Channel eNB %d => UE %d (CCid %d): tx_power %.1f dBm/RE, path_loss %1.f dB\n",
eNB_id,UE_id,CC_id,
(double)frame_parms->pdsch_config_common.referenceSignalPower,
// enb_data[eNB_id]->tx_power_dBm,
eNB2UE[eNB_id][UE_id][CC_id]->path_loss_dB);
#ifdef DEBUG_SIM
rx_pwr = signal_energy_fp(r_re0,r_im0,nb_antennas_rx,frame_parms->ofdm_symbol_size,0)*(double)frame_parms->ofdm_symbol_size/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr %f dBm/RE (%f dBm RSSI)for slot %d (subframe %d)\n",UE_id,10*log10(rx_pwr/12.0/(double)frame_parms->N_RB_DL),10*log10(rx_pwr),next_slot,next_slot>>1);
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (noise) -132 dBm/RE (N0fs = %f dBm, N0B = %f dBm) for slot %d (subframe %d)\n",UE_id,10*log10(eNB2UE[eNB_id][UE_id][CC_id]->BW*1e6)+-174, 10*log10(eNB2UE[eNB_id][UE_id][CC_id]->BW*1e6*12*frame_parms->N_RB_DL/(double)frame_parms->ofdm_symbol_size)+-174, next_slot,next_slot>>1);
rx_pwr = signal_energy_fp(r_re0,r_im0,nb_antennas_rx,
frame_parms->ofdm_symbol_size,
slot_offset_meas)/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr %f dBm/RE (%f dBm RSSI)for slot %d (subframe %d)\n",UE_id,
10*log10(rx_pwr),
10*log10(rx_pwr*(double)frame_parms->N_RB_DL*12),next_slot,next_slot>>1);
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (noise) -132 dBm/RE (N0fs = %.1f dBm, N0B = %.1f dBm) for slot %d (subframe %d)\n",
UE_id,
10*log10(eNB2UE[eNB_id][UE_id][CC_id]->BW*1e6)-174,
10*log10(eNB2UE[eNB_id][UE_id][CC_id]->BW*1e6*12*frame_parms->N_RB_DL/(double)frame_parms->ofdm_symbol_size)-174,
next_slot,next_slot>>1);
#endif
if (eNB2UE[eNB_id][UE_id][CC_id]->first_run == 1)
......@@ -334,8 +343,11 @@ void do_DL_sig(double **r_re0,double **r_im0,
(double)PHY_vars_UE_g[UE_id][CC_id]->rx_total_gain_dB - 66.227); // rx_gain (dB) (66.227 = 20*log10(pow2(11)) = gain from the adc that will be applied later)
#ifdef DEBUG_SIM
rx_pwr = signal_energy_fp(r_re0,r_im0,nb_antennas_rx,frame_parms->ofdm_symbol_size,0);
LOG_D(OCM,"[SIM][DL] UE %d : ADC in (eNB %d) %f dBm for slot %d (subframe %d)\n",
rx_pwr = signal_energy_fp(r_re0,r_im0,
nb_antennas_rx,
frame_parms->ofdm_symbol_size,
slot_offset_meas)/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][DL] UE %d : ADC in (eNB %d) %f dBm/RE for slot %d (subframe %d)\n",
UE_id,eNB_id,
10*log10(rx_pwr),next_slot,next_slot>>1);
#endif
......@@ -348,7 +360,7 @@ void do_DL_sig(double **r_re0,double **r_im0,
}
#ifdef DEBUG_SIM
rx_pwr = signal_energy_fp(r_re,r_im,nb_antennas_rx,frame_parms->ofdm_symbol_size,0);
rx_pwr = signal_energy_fp(r_re,r_im,nb_antennas_rx,frame_parms->ofdm_symbol_size,slot_offset_meas)/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][DL] UE %d : ADC in %f dBm for slot %d (subframe %d)\n",UE_id,10*log10(rx_pwr),next_slot,next_slot>>1);
#endif
......@@ -365,8 +377,8 @@ void do_DL_sig(double **r_re0,double **r_im0,
12);
#ifdef DEBUG_SIM
rx_pwr2 = signal_energy(rxdata[0]+slot_offset,frame_parms->ofdm_symbol_size)*(frame_parms->ofdm_symbol_size/(12.0*frame_parms->N_RB_DL));
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (ADC out) %f dB (%d) for slot %d (subframe %d), writing to %p\n",UE_id, 10*log10((double)rx_pwr2),rx_pwr2,next_slot,next_slot>>1,rxdata);
rx_pwr2 = signal_energy(rxdata[0]+slot_offset,frame_parms->ofdm_symbol_size)/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (ADC out) %f dB/RE (%d) for slot %d (subframe %d), writing to %p\n",UE_id, 10*log10((double)rx_pwr2),rx_pwr2,next_slot,next_slot>>1,rxdata);
#else
UNUSED_VARIABLE(rx_pwr2);
UNUSED_VARIABLE(tx_pwr);
......@@ -482,7 +494,6 @@ if (abstraction_flag!=0) {
txdata = PHY_vars_UE_g[UE_id][CC_id]->lte_ue_common_vars.txdata;
slot_offset = (next_slot)*(frame_parms->samples_per_tti>>1);
slot_offset_meas = ((next_slot&1)==0) ? slot_offset : (slot_offset-(frame_parms->samples_per_tti>>1));
if (((double)PHY_vars_UE_g[UE_id][CC_id]->tx_power_dBm +
UE2eNB[UE_id][eNB_id][CC_id]->path_loss_dB) <= -125.0) {
......@@ -573,7 +584,7 @@ if (abstraction_flag!=0) {
(double)PHY_vars_eNB_g[eNB_id][CC_id]->rx_total_gain_eNB_dB - 66.227); // rx_gain (dB) (66.227 = 20*log10(pow2(11)) = gain from the adc that will be applied later)
#ifdef DEBUG_SIM
rx_pwr = signal_energy_fp(r_re,r_im,nb_antennas_rx,frame_parms->samples_per_tti>>1,0);
rx_pwr = signal_energy_fp(r_re,r_im,nb_antennas_rx,frame_parms->samples_per_tti>>1,0)*(double)frame_parms->ofdm_symbol_size/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][UL] rx_pwr (ADC in) %f dB for slot %d (subframe %d)\n",10*log10(rx_pwr),next_slot,next_slot>>1);
#endif
......@@ -590,7 +601,7 @@ if (abstraction_flag!=0) {
12);
#ifdef DEBUG_SIM
rx_pwr2 = signal_energy(rxdata[0]+slot_offset,frame_parms->samples_per_tti>>1);
rx_pwr2 = signal_energy(rxdata[0]+slot_offset,frame_parms->samples_per_tti>>1)*(double)frame_parms->ofdm_symbol_size/(12.0*frame_parms->N_RB_DL);
LOG_D(OCM,"[SIM][UL] eNB %d rx_pwr (ADC out) %f dB (%d) for slot %d (subframe %d)\n",eNB_id,10*log10((double)rx_pwr2),rx_pwr2,next_slot,next_slot>>1);
#else
UNUSED_VARIABLE(tx_pwr);
......
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