/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ #include <string.h> #include <math.h> #include <unistd.h> #include <stdint.h> #include <stdio.h> #include <time.h> #include "SIMULATION/TOOLS/defs.h" #include "SIMULATION/RF/defs.h" #include "PHY/types.h" #include "PHY/defs.h" #include "PHY/extern.h" #ifdef OPENAIR2 #include "LAYER2/MAC/defs.h" #include "LAYER2/MAC/extern.h" #include "UTIL/LOG/log_if.h" #include "UTIL/LOG/log_extern.h" #include "RRC/LITE/extern.h" #include "PHY_INTERFACE/extern.h" #include "UTIL/OCG/OCG.h" #include "UTIL/OPT/opt.h" // to test OPT #endif #include "UTIL/FIFO/types.h" #ifdef IFFT_FPGA #include "PHY/LTE_REFSIG/mod_table.h" #endif #include "SCHED/defs.h" #include "SCHED/extern.h" #ifdef XFORMS #include "forms.h" #include "phy_procedures_sim_form.h" #endif #include "oaisim.h" #define RF #define DEBUG_SIM /* #undef LOG_D #define LOG_D(A,B,C...) printf(B,C) */ int number_rb_ul; int first_rbUL ; extern Signal_buffers_t *signal_buffers_g; double r_re_DL[NUMBER_OF_UE_MAX][2][30720]; double r_im_DL[NUMBER_OF_UE_MAX][2][30720]; double r_re_UL[NUMBER_OF_eNB_MAX][2][30720]; double r_im_UL[NUMBER_OF_eNB_MAX][2][30720]; int RU_output_mask[NUMBER_OF_UE_MAX]; int UE_output_mask[NUMBER_OF_RU_MAX]; pthread_mutex_t RU_output_mutex[NUMBER_OF_UE_MAX]; pthread_mutex_t UE_output_mutex[NUMBER_OF_RU_MAX]; double ru_amp[NUMBER_OF_RU_MAX]; void do_DL_sig(channel_desc_t *RU2UE[NUMBER_OF_RU_MAX][NUMBER_OF_UE_MAX][MAX_NUM_CCs], node_desc_t *enb_data[NUMBER_OF_RU_MAX], node_desc_t *ue_data[NUMBER_OF_UE_MAX], uint16_t subframe, uint32_t offset, uint32_t length, uint8_t abstraction_flag,LTE_DL_FRAME_PARMS *ue_frame_parms, uint8_t UE_id, int CC_id) { int32_t att_eNB_id=-1; int32_t **txdata,**rxdata; uint32_t eNB_id,ru_id=0; double tx_pwr; double rx_pwr; int32_t rx_pwr2; uint32_t i,aa; uint32_t sf_offset; double min_path_loss=-200; uint8_t hold_channel=0; uint8_t nb_antennas_rx = RU2UE[0][0][CC_id]->nb_rx; // number of rx antennas at UE uint8_t nb_antennas_tx = RU2UE[0][0][CC_id]->nb_tx; // number of tx antennas at eNB double s_re0[30720]; double s_re1[30720]; double *s_re[2]; double s_im0[30720]; double s_im1[30720]; double *s_im[2]; double r_re00[30720]; double r_re01[30720]; double *r_re0[2]; double r_im00[30720]; double r_im01[30720]; double *r_im0[2]; LTE_DL_FRAME_PARMS *frame_parms; s_re[0] = s_re0; s_im[0] = s_im0; s_re[1] = s_re1; s_im[1] = s_im1; r_re0[0] = r_re00; r_im0[0] = r_im00; r_re0[1] = r_re01; r_im0[1] = r_im01; if (subframe==0) hold_channel = 0; else hold_channel = 1; if (abstraction_flag != 0) { //for (UE_id=0;UE_id<NB_UE_INST;UE_id++) { if (!hold_channel) { // calculate the random channel from each RU for (ru_id=0; ru_id<RC.nb_RU; ru_id++) { frame_parms = &RC.ru[ru_id]->frame_parms; random_channel(RU2UE[ru_id][UE_id][CC_id],abstraction_flag); /* for (i=0;i<RU2UE[eNB_id][UE_id]->nb_taps;i++) printf("RU2UE[%d][%d]->a[0][%d] = (%f,%f)\n",eNB_id,UE_id,i,RU2UE[eNB_id][UE_id]->a[0][i].x,RU2UE[eNB_id][UE_id]->a[0][i].y); */ freq_channel(RU2UE[ru_id][UE_id][CC_id], frame_parms->N_RB_DL,frame_parms->N_RB_DL*12+1); } // find out which eNB the UE is attached to /* for (eNB_id=0; eNB_id<RC.nb_inst; eNB_id++) { if (find_ue(PHY_vars_UE_g[UE_id][CC_id]->pdcch_vars[0][0]->crnti,RC.eNB[eNB_id][CC_id])>=0) { // UE with UE_id is connected to eNb with eNB_id att_eNB_id=eNB_id; LOG_D(OCM,"A: UE attached to eNB (UE%d->eNB%d)\n",UE_id,eNB_id); } } */ // if UE is not attached yet, find assume its the eNB with the smallest pathloss if (att_eNB_id<0) { for (eNB_id=0; eNB_id<NB_eNB_INST; eNB_id++) { for (int ru=0;ru<RC.nb_RU;ru++) { ru_id = RC.eNB[eNB_id][CC_id]->RU_list[ru]->idx; if (min_path_loss<RU2UE[ru_id][UE_id][CC_id]->path_loss_dB) { min_path_loss = RU2UE[ru_id][UE_id][CC_id]->path_loss_dB; att_eNB_id=eNB_id; LOG_D(OCM,"B: UE attached to eNB (UE%d->eNB%d)\n",UE_id,eNB_id); } } } } if (att_eNB_id<0) { LOG_E(OCM,"Cannot find eNB for UE %d, return\n",UE_id); return; //exit(-1); } #ifdef DEBUG_SIM rx_pwr = signal_energy_fp2(RU2UE[att_eNB_id][UE_id][CC_id]->ch[0], RU2UE[att_eNB_id][UE_id][CC_id]->channel_length)*RU2UE[att_eNB_id][UE_id][CC_id]->channel_length; LOG_D(OCM,"Channel (CCid %d) eNB %d => UE %d : tx_power %d dBm, path_loss %f dB\n", CC_id,att_eNB_id,UE_id, frame_parms->pdsch_config_common.referenceSignalPower, RU2UE[att_eNB_id][UE_id][CC_id]->path_loss_dB); #endif //dlsch_abstraction(PHY_vars_UE_g[UE_id]->sinr_dB, rb_alloc, 8); // fill in perfect channel estimates channel_desc_t *desc1 = RU2UE[att_eNB_id][UE_id][CC_id]; int32_t **dl_channel_est = PHY_vars_UE_g[UE_id][CC_id]->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[0]; // double scale = pow(10.0,(enb_data[att_eNB_id]->tx_power_dBm + RU2UE[att_eNB_id][UE_id]->path_loss_dB + (double) PHY_vars_UE_g[UE_id]->rx_total_gain_dB)/20.0); double scale = pow(10.0,(frame_parms->pdsch_config_common.referenceSignalPower+RU2UE[att_eNB_id][UE_id][CC_id]->path_loss_dB + (double) PHY_vars_UE_g[UE_id][CC_id]->rx_total_gain_dB)/20.0); LOG_D(OCM,"scale =%lf (%d dB)\n",scale,(int) (20*log10(scale))); // freq_channel(desc1,frame_parms->N_RB_DL,nb_samples); //write_output("channel.m","ch",desc1->ch[0],desc1->channel_length,1,8); //write_output("channelF.m","chF",desc1->chF[0],nb_samples,1,8); int count,count1,a_rx,a_tx; for(a_tx=0; a_tx<nb_antennas_tx; a_tx++) { for (a_rx=0; a_rx<nb_antennas_rx; a_rx++) { //for (count=0;count<frame_parms->symbols_per_tti/2;count++) for (count=0; count<1; count++) { for (count1=0; count1<frame_parms->N_RB_DL*12; count1++) { ((int16_t *) dl_channel_est[(a_tx<<1)+a_rx])[2*count1+(count*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(desc1->chF[a_rx+(a_tx*nb_antennas_rx)][count1].x*scale); ((int16_t *) dl_channel_est[(a_tx<<1)+a_rx])[2*count1+1+(count*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(desc1->chF[a_rx+(a_tx*nb_antennas_rx)][count1].y*scale) ; } } } } // calculate the SNR for the attached eNB (this assumes eNB always uses PMI stored in eNB_UE_stats; to be improved) init_snr(RU2UE[att_eNB_id][UE_id][CC_id], enb_data[att_eNB_id], ue_data[UE_id], PHY_vars_UE_g[UE_id][CC_id]->sinr_dB, &PHY_vars_UE_g[UE_id][CC_id]->N0, PHY_vars_UE_g[UE_id][CC_id]->transmission_mode[att_eNB_id], RC.eNB[att_eNB_id][CC_id]->UE_stats[UE_id].DL_pmi_single, RC.eNB[att_eNB_id][CC_id]->mu_mimo_mode[UE_id].dl_pow_off,RC.eNB[att_eNB_id][CC_id]->frame_parms.N_RB_DL); // calculate sinr here for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++) { if (att_eNB_id != eNB_id) { calculate_sinr(RU2UE[eNB_id][UE_id][CC_id], enb_data[eNB_id], ue_data[UE_id], PHY_vars_UE_g[UE_id][CC_id]->sinr_dB, RC.eNB[att_eNB_id][CC_id]->frame_parms.N_RB_DL); } } } // hold channel } else { //abstraction_flag pthread_mutex_lock(&RU_output_mutex[UE_id]); if (RU_output_mask[UE_id] == 0) { // This is the first eNodeB for this UE, clear the buffer for (aa=0; aa<nb_antennas_rx; aa++) { memset((void*)r_re_DL[UE_id][aa],0,(RC.ru[0]->frame_parms.samples_per_tti)*sizeof(double)); memset((void*)r_im_DL[UE_id][aa],0,(RC.ru[0]->frame_parms.samples_per_tti)*sizeof(double)); } } pthread_mutex_unlock(&RU_output_mutex[UE_id]); for (ru_id=0; ru_id<RC.nb_RU; ru_id++) { txdata = RC.ru[ru_id]->common.txdata; frame_parms = &RC.ru[ru_id]->frame_parms; sf_offset = (subframe*frame_parms->samples_per_tti) + offset; LOG_D(EMU,">>>>>>>>>>>>>>>>>TXPATH: RU %d : DL_sig reading TX for subframe %d (sf_offset %d, length %d) from %p\n",ru_id,subframe,sf_offset,length,txdata[0]+sf_offset); int length_meas = frame_parms->ofdm_symbol_size; if (sf_offset+length <= frame_parms->samples_per_tti*10) { tx_pwr = dac_fixed_gain(s_re, s_im, txdata, sf_offset, nb_antennas_tx, length, sf_offset, length_meas, 14, frame_parms->pdsch_config_common.referenceSignalPower, // dBm/RE 0, &ru_amp[ru_id], frame_parms->N_RB_DL*12); } else { tx_pwr = dac_fixed_gain(s_re, s_im, txdata, sf_offset, nb_antennas_tx, (frame_parms->samples_per_tti*10)-sf_offset, sf_offset, length_meas, 14, frame_parms->pdsch_config_common.referenceSignalPower, // dBm/RE 0, &ru_amp[ru_id], frame_parms->N_RB_DL*12); tx_pwr = dac_fixed_gain(s_re, s_im, txdata, sf_offset, nb_antennas_tx, length+sf_offset-(frame_parms->samples_per_tti*10), sf_offset, length_meas, 14, frame_parms->pdsch_config_common.referenceSignalPower, // dBm/RE 0, &ru_amp[ru_id], frame_parms->N_RB_DL*12); } #ifdef DEBUG_SIM LOG_D(PHY,"[SIM][DL] subframe %d: txp (time) %d dB\n", subframe,dB_fixed(signal_energy(&txdata[0][sf_offset],length_meas))); LOG_D(OCM,"[SIM][DL] RU %d (CCid %d): tx_pwr %.1f dBm/RE (target %d dBm/RE), for subframe %d\n", ru_id,CC_id, 10*log10(tx_pwr), frame_parms->pdsch_config_common.referenceSignalPower, subframe); #endif tx_pwr = signal_energy_fp(s_re,s_im,nb_antennas_tx, length<length_meas?length:length_meas, 0)/(12.0*frame_parms->N_RB_DL); //RU2UE[eNB_id][UE_id]->path_loss_dB = 0; multipath_channel(RU2UE[ru_id][UE_id][CC_id],s_re,s_im,r_re0,r_im0, length,hold_channel); #ifdef DEBUG_SIM rx_pwr = signal_energy_fp2(RU2UE[ru_id][UE_id][CC_id]->ch[0], RU2UE[ru_id][UE_id][CC_id]->channel_length)*RU2UE[ru_id][UE_id][CC_id]->channel_length; LOG_D(OCM,"[SIM][DL] Channel RU %d => UE %d (CCid %d): Channel gain %f dB (%f)\n",ru_id,UE_id,CC_id,10*log10(rx_pwr),rx_pwr); #endif #ifdef DEBUG_SIM for (i=0; i<RU2UE[ru_id][UE_id][CC_id]->channel_length; i++) LOG_D(OCM,"channel(%d,%d)[%d] : (%f,%f)\n",ru_id,UE_id,i,RU2UE[ru_id][UE_id][CC_id]->ch[0][i].x,RU2UE[ru_id][UE_id][CC_id]->ch[0][i].y); #endif LOG_D(OCM,"[SIM][DL] Channel RU %d => UE %d (CCid %d): tx_power %.1f dBm/RE, path_loss %1.f dB\n", ru_id,UE_id,CC_id, (double)frame_parms->pdsch_config_common.referenceSignalPower, // enb_data[eNB_id]->tx_power_dBm, RU2UE[ru_id][UE_id][CC_id]->path_loss_dB); #ifdef DEBUG_SIM rx_pwr = signal_energy_fp(r_re0,r_im0,nb_antennas_rx, length<length_meas?length:length_meas, 0)/(12.0*frame_parms->N_RB_DL); LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr %f dBm/RE (%f dBm RSSI,tx %f dB)for subframe %d (length %d)\n",UE_id, 10*log10(rx_pwr), 10*log10(rx_pwr*(double)frame_parms->N_RB_DL*12), 10*log10(tx_pwr),subframe, length<length_meas?length:length_meas); LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (noise) -132 dBm/RE (N0fs = %.1f dBm, N0B = %.1f dBm) for subframe %d\n", UE_id, 10*log10(RU2UE[ru_id][UE_id][CC_id]->sampling_rate*1e6)-174, 10*log10(RU2UE[ru_id][UE_id][CC_id]->sampling_rate*1e6*12*frame_parms->N_RB_DL/(double)frame_parms->ofdm_symbol_size)-174, subframe); #endif if (RU2UE[ru_id][UE_id][CC_id]->first_run == 1) RU2UE[ru_id][UE_id][CC_id]->first_run = 0; // RF model #ifdef DEBUG_SIM LOG_D(OCM,"[SIM][DL] UE %d (CCid %d): rx_gain %d dB (-ADC %f) for subframe %d\n",UE_id,CC_id,PHY_vars_UE_g[UE_id][CC_id]->rx_total_gain_dB, PHY_vars_UE_g[UE_id][CC_id]->rx_total_gain_dB-66.227,subframe); #endif rf_rx_simple(r_re0, r_im0, nb_antennas_rx, length, 1e3/RU2UE[ru_id][UE_id][CC_id]->sampling_rate, // sampling time (ns) (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, length<length_meas?length:length_meas, 0)/(12.0*frame_parms->N_RB_DL); LOG_D(OCM,"[SIM][DL] UE %d : ADC in (RU %d) %f dBm/RE for subframe %d\n", UE_id,ru_id, 10*log10(rx_pwr),subframe); #endif pthread_mutex_lock(&RU_output_mutex[UE_id]); for (i=0; i<frame_parms->samples_per_tti; i++) { for (aa=0; aa<nb_antennas_rx; aa++) { r_re_DL[UE_id][aa][i]+=r_re0[aa][i]; r_im_DL[UE_id][aa][i]+=r_im0[aa][i]; } } RU_output_mask[UE_id] |= (1<<ru_id); if (RU_output_mask[UE_id] == (1<<RC.nb_RU)-1) { RU_output_mask[UE_id]=0; double *r_re_p[2] = {r_re_DL[UE_id][0],r_re_DL[UE_id][1]}; double *r_im_p[2] = {r_im_DL[UE_id][0],r_im_DL[UE_id][1]}; #ifdef DEBUG_SIM rx_pwr = signal_energy_fp(r_re_p,r_im_p,nb_antennas_rx,length<length_meas?length:length_meas,0)/(12.0*frame_parms->N_RB_DL); LOG_D(OCM,"[SIM][DL] UE %d : ADC in %f dBm/RE for subframe %d\n",UE_id,10*log10(rx_pwr),subframe); #endif rxdata = PHY_vars_UE_g[UE_id][CC_id]->common_vars.rxdata; sf_offset = (subframe*frame_parms->samples_per_tti)+offset; adc(r_re_p, r_im_p, 0, sf_offset, rxdata, nb_antennas_rx, length, 12); #ifdef DEBUG_SIM rx_pwr2 = signal_energy(rxdata[0]+sf_offset,length<length_meas?length:length_meas)/(12.0*frame_parms->N_RB_DL); LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (ADC out) %f dB/RE (%d) for subframe %d, writing to %p, length %d\n",UE_id, 10*log10((double)rx_pwr2),rx_pwr2,subframe,rxdata,length<length_meas?length:length_meas); LOG_D(OCM,"[SIM][DL] UE %d : rx_pwr (ADC out) %f dB for subframe %d\n",UE_id,10*log10((double)rx_pwr2*12*frame_parms->N_RB_DL) ,subframe); #else UNUSED_VARIABLE(rx_pwr2); UNUSED_VARIABLE(tx_pwr); UNUSED_VARIABLE(rx_pwr); #endif } // RU_output_mask pthread_mutex_unlock(&RU_output_mutex[UE_id]); } // ru_id } } void do_UL_sig(channel_desc_t *UE2RU[NUMBER_OF_UE_MAX][NUMBER_OF_RU_MAX][MAX_NUM_CCs], node_desc_t *enb_data[NUMBER_OF_RU_MAX],node_desc_t *ue_data[NUMBER_OF_UE_MAX], uint16_t subframe,uint8_t abstraction_flag,LTE_DL_FRAME_PARMS *frame_parms, uint32_t frame,int ru_id,uint8_t CC_id) { int32_t **txdata,**rxdata; uint8_t UE_id=0; uint8_t nb_antennas_rx = UE2RU[0][0][CC_id]->nb_rx; // number of rx antennas at eNB uint8_t nb_antennas_tx = UE2RU[0][0][CC_id]->nb_tx; // number of tx antennas at UE double tx_pwr, rx_pwr; int32_t rx_pwr2; uint32_t i,aa; uint32_t sf_offset; uint8_t hold_channel=0; double s_re0[30720]; double s_re1[30720]; double *s_re[2]; double s_im0[30720]; double s_im1[30720]; double *s_im[2]; double r_re00[30720]; double r_re01[30720]; double *r_re0[2]; double r_im00[30720]; double r_im01[30720]; double *r_im0[2]; s_re[0] = s_re0; s_im[0] = s_im0; s_re[1] = s_re1; s_im[1] = s_im1; r_re0[0] = r_re00; r_im0[0] = r_im00; r_re0[1] = r_re01; r_im0[1] = r_im01; if (abstraction_flag!=0) { } else { //without abstraction pthread_mutex_lock(&UE_output_mutex[ru_id]); // Clear RX signal for eNB = eNB_id for (i=0; i<frame_parms->samples_per_tti; i++) { for (aa=0; aa<nb_antennas_rx; aa++) { r_re_UL[ru_id][aa][i]=0.0; r_im_UL[ru_id][aa][i]=0.0; } } pthread_mutex_unlock(&UE_output_mutex[ru_id]); // Compute RX signal for eNB = eNB_id for (UE_id=0; UE_id<NB_UE_INST; UE_id++) { txdata = PHY_vars_UE_g[UE_id][CC_id]->common_vars.txdata; AssertFatal(txdata != NULL,"txdata is null\n"); sf_offset = subframe*frame_parms->samples_per_tti; if (((double)PHY_vars_UE_g[UE_id][CC_id]->tx_power_dBm[subframe] + UE2RU[UE_id][ru_id][CC_id]->path_loss_dB) <= -125.0) { // don't simulate a UE that is too weak LOG_D(OCM,"[SIM][UL] ULPOWERS UE %d tx_pwr %d dBm (num_RE %d) for subframe %d (sf_offset %d)\n", UE_id, PHY_vars_UE_g[UE_id][CC_id]->tx_power_dBm[subframe], PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe], subframe,sf_offset); } else { tx_pwr = dac_fixed_gain((double**)s_re, (double**)s_im, txdata, sf_offset, nb_antennas_tx, frame_parms->samples_per_tti, sf_offset, frame_parms->ofdm_symbol_size, 14, (double)PHY_vars_UE_g[UE_id][CC_id]->tx_power_dBm[subframe]-10*log10((double)PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe]), 1, NULL, PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe]); // This make the previous argument the total power LOG_D(OCM,"[SIM][UL] ULPOWERS UE %d tx_pwr %f dBm (target %d dBm, num_RE %d) for subframe %d (sf_offset %d)\n", UE_id, 10*log10(tx_pwr*PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe]), PHY_vars_UE_g[UE_id][CC_id]->tx_power_dBm[subframe], PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe], subframe,sf_offset); multipath_channel(UE2RU[UE_id][ru_id][CC_id],s_re,s_im,r_re0,r_im0, frame_parms->samples_per_tti,hold_channel); rx_pwr = signal_energy_fp2(UE2RU[UE_id][ru_id][CC_id]->ch[0], UE2RU[UE_id][ru_id][CC_id]->channel_length)*UE2RU[UE_id][ru_id][CC_id]->channel_length; LOG_D(OCM,"[SIM][UL] subframe %d Channel UE %d => RU %d : %f dB (hold %d,length %d, PL %f)\n",subframe,UE_id,ru_id,10*log10(rx_pwr), hold_channel,UE2RU[UE_id][ru_id][CC_id]->channel_length, UE2RU[UE_id][ru_id][CC_id]->path_loss_dB); rx_pwr = signal_energy_fp(r_re0,r_im0,nb_antennas_rx,frame_parms->samples_per_tti,0); LOG_D(OCM,"[SIM][UL] RU %d (%d/%d rx antennas) : rx_pwr %f dBm (tx_pwr - PL %f) for subframe %d, sptti %d\n", ru_id,nb_antennas_rx,UE2RU[UE_id][ru_id][CC_id]->nb_rx,10*log10(rx_pwr),10*log10(tx_pwr*PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe])+UE2RU[UE_id][ru_id][CC_id]->path_loss_dB,subframe,frame_parms->samples_per_tti); /* if (abs(10*log10(rx_pwr)-10*log10(tx_pwr*PHY_vars_UE_g[UE_id][CC_id]->tx_total_RE[subframe])-UE2RU[UE_id][ru_id][CC_id]->path_loss_dB)>3) { write_output("txsig_re.m","s_re",s_re[0],frame_parms->samples_per_tti,1,7); write_output("txsig_im.m","s_im",s_im[0],frame_parms->samples_per_tti,1,7); write_output("rxsig_re.m","r_re",r_re0[0],frame_parms->samples_per_tti,1,7); write_output("rxsig_im.m","r_im",r_im0[0],frame_parms->samples_per_tti,1,7); exit(-1); }*/ if (UE2RU[UE_id][ru_id][CC_id]->first_run == 1) UE2RU[UE_id][ru_id][CC_id]->first_run = 0; pthread_mutex_lock(&UE_output_mutex[ru_id]); for (aa=0; aa<nb_antennas_rx; aa++) { for (i=0; i<frame_parms->samples_per_tti; i++) { r_re_UL[ru_id][aa][i]+=r_re0[aa][i]; r_im_UL[ru_id][aa][i]+=r_im0[aa][i]; } } pthread_mutex_unlock(&UE_output_mutex[ru_id]); } } //UE_id double *r_re_p[2] = {r_re_UL[ru_id][0],r_re_UL[ru_id][1]}; double *r_im_p[2] = {r_im_UL[ru_id][0],r_im_UL[ru_id][1]}; rx_pwr = signal_energy_fp(r_re_p,r_im_p,nb_antennas_rx,frame_parms->samples_per_tti,0); LOG_D(OCM,"[SIM][UL] RU %d (%d/%d rx antennas) : rx_pwr %f dBm (before RF) for subframe %d, gain %f\n", ru_id,nb_antennas_rx,nb_antennas_rx,10*log10(rx_pwr),subframe, (double)RC.ru[ru_id]->max_rxgain-(double)RC.ru[ru_id]->att_rx - 66.227); rf_rx_simple(r_re_p, r_im_p, nb_antennas_rx, frame_parms->samples_per_tti, 1e3/UE2RU[0][ru_id][CC_id]->sampling_rate, // sampling time (ns) (double)RC.ru[ru_id]->max_rxgain-(double)RC.ru[ru_id]->att_rx - 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_p,r_im_p,nb_antennas_rx,frame_parms->samples_per_tti,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 subframe %d (rx_gain %f)\n",10*log10(rx_pwr),subframe, (double)RC.ru[ru_id]->max_rxgain-(double)RC.ru[ru_id]->att_rx); //#endif rxdata = RC.ru[ru_id]->common.rxdata; sf_offset = subframe*frame_parms->samples_per_tti; adc(r_re_p, r_im_p, 0, sf_offset, rxdata, nb_antennas_rx, frame_parms->samples_per_tti, 12); #ifdef DEBUG_SIM rx_pwr2 = signal_energy(rxdata[0]+sf_offset,frame_parms->samples_per_tti)*(double)frame_parms->ofdm_symbol_size/(12.0*frame_parms->N_RB_DL); LOG_D(OCM,"[SIM][UL] RU %d rx_pwr (ADC out) %f dB (%d) for subframe %d (offset %d) = %p\n",ru_id,10*log10((double)rx_pwr2),rx_pwr2,subframe,sf_offset,rxdata[0]+sf_offset); #else UNUSED_VARIABLE(tx_pwr); UNUSED_VARIABLE(rx_pwr); UNUSED_VARIABLE(rx_pwr2); #endif } // abstraction_flag==0 } void init_channel_vars(LTE_DL_FRAME_PARMS *frame_parms, double ***s_re,double ***s_im,double ***r_re,double ***r_im,double ***r_re0,double ***r_im0) { int i; memset(RU_output_mask,0,sizeof(int)*NUMBER_OF_UE_MAX); for (i=0;i<NB_UE_INST;i++) pthread_mutex_init(&RU_output_mutex[i],NULL); memset(UE_output_mask,0,sizeof(int)*NUMBER_OF_RU_MAX); for (i=0;i<NB_eNB_INST;i++) pthread_mutex_init(&UE_output_mutex[i],NULL); }