/* * 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 1.0 (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 "SIMULATION/TOOLS/defs.h" #include "SIMULATION/RF/defs.h" #include "PHY/types.h" #include "PHY/defs.h" #include "PHY/vars.h" #ifdef EMOS #include "SCHED/phy_procedures_emos.h" #endif #include "SCHED/defs.h" #include "SCHED/vars.h" #include "LAYER2/MAC/vars.h" #include "OCG_vars.h" #include "unitary_defs.h" int current_dlsch_cqi; //FIXME! PHY_VARS_eNB *eNB; PHY_VARS_UE *UE; #define DLSCH_RB_ALLOC 0x1fbf // igore DC component,RB13 extern uint16_t prach_root_sequence_map0_3[838]; void dump_prach_config(LTE_DL_FRAME_PARMS *frame_parms,uint8_t subframe); int main(int argc, char **argv) { char c; int i,aa,aarx; double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0,ue_speed0=0.0,ue_speed1=0.0; uint8_t snr1set=0; uint8_t ue_speed1set=0; //mod_sym_t **txdataF; int **txdata; double **s_re,**s_im,**r_re,**r_im; double iqim=0.0; int trial; //, ntrials=1; uint8_t transmission_mode = 1,n_tx=1,n_rx=1; uint16_t Nid_cell=0; uint8_t awgn_flag=0; uint8_t hs_flag=0; int n_frames=1; channel_desc_t *UE2eNB; uint32_t nsymb,tx_lev; //,tx_lev_dB; uint8_t extended_prefix_flag=0; // int8_t interf1=-19,interf2=-19; LTE_DL_FRAME_PARMS *frame_parms; #ifdef EMOS fifo_dump_emos emos_dump; #endif SCM_t channel_model=Rayleigh1; // uint8_t abstraction_flag=0,calibration_flag=0; // double prach_sinr; uint8_t osf=1,N_RB_DL=25; uint32_t prach_errors=0; uint8_t subframe=3; uint16_t preamble_energy_list[64],preamble_tx=99,preamble_delay_list[64]; uint16_t preamble_max,preamble_energy_max; PRACH_RESOURCES_t prach_resources; //uint8_t prach_fmt; //int N_ZC; int delay = 0; double delay_avg=0; double ue_speed = 0; int NCS_config = 1,rootSequenceIndex=0; int threequarter_fs = 0; logInit(); number_of_cards = 1; while ((c = getopt (argc, argv, "hHaA:Cr:p:g:n:s:S:t:x:y:v:V:z:N:F:d:Z:L:R:E")) != -1) { switch (c) { case 'a': printf("Running AWGN simulation\n"); awgn_flag = 1; /* ntrials not used later, no need to set */ //ntrials=1; break; case 'd': delay = atoi(optarg); break; case 'g': switch((char)*optarg) { case 'A': channel_model=SCM_A; break; case 'B': channel_model=SCM_B; break; case 'C': channel_model=SCM_C; break; case 'D': channel_model=SCM_D; break; case 'E': channel_model=EPA; break; case 'F': channel_model=EVA; break; case 'G': channel_model=ETU; break; case 'H': channel_model=Rayleigh8; case 'I': channel_model=Rayleigh1; case 'J': channel_model=Rayleigh1_corr; case 'K': channel_model=Rayleigh1_anticorr; case 'L': channel_model=Rice8; case 'M': channel_model=Rice1; case 'N': channel_model=Rayleigh1_800; break; default: msg("Unsupported channel model!\n"); exit(-1); } break; case 'E': threequarter_fs=1; break; case 'n': n_frames = atoi(optarg); break; case 's': snr0 = atof(optarg); msg("Setting SNR0 to %f\n",snr0); break; case 'S': snr1 = atof(optarg); snr1set=1; msg("Setting SNR1 to %f\n",snr1); break; case 'p': preamble_tx=atoi(optarg); break; case 'v': ue_speed0 = atoi(optarg); break; case 'V': ue_speed1 = atoi(optarg); ue_speed1set = 1; break; case 'Z': NCS_config = atoi(optarg); if ((NCS_config > 15) || (NCS_config < 0)) printf("Illegal NCS_config %d, (should be 0-15)\n",NCS_config); break; case 'H': printf("High-Speed Flag enabled\n"); hs_flag = 1; break; case 'L': rootSequenceIndex = atoi(optarg); if ((rootSequenceIndex < 0) || (rootSequenceIndex > 837)) printf("Illegal rootSequenceNumber %d, (should be 0-837)\n",rootSequenceIndex); break; case 'x': transmission_mode=atoi(optarg); if ((transmission_mode!=1) && (transmission_mode!=2) && (transmission_mode!=6)) { msg("Unsupported transmission mode %d\n",transmission_mode); exit(-1); } break; case 'y': n_tx=atoi(optarg); if ((n_tx==0) || (n_tx>2)) { msg("Unsupported number of tx antennas %d\n",n_tx); exit(-1); } break; case 'z': n_rx=atoi(optarg); if ((n_rx==0) || (n_rx>2)) { msg("Unsupported number of rx antennas %d\n",n_rx); exit(-1); } break; case 'N': Nid_cell = atoi(optarg); break; case 'R': N_RB_DL = atoi(optarg); break; case 'O': osf = atoi(optarg); break; case 'F': break; default: case 'h': printf("%s -h(elp) -a(wgn on) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId\n", argv[0]); printf("-h This message\n"); printf("-a Use AWGN channel and not multipath\n"); printf("-n Number of frames to simulate\n"); printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n"); printf("-S Ending SNR, runs from SNR0 to SNR1\n"); printf("-g [A,B,C,D,E,F,G,I,N] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) or Rayleigh1 (I) or Rayleigh1_800 (N) models (ignores delay spread and Ricean factor)\n"); printf("-z Number of RX antennas used in eNB\n"); printf("-N Nid_cell\n"); printf("-O oversampling factor (1,2,4,8,16)\n"); // printf("-f PRACH format (0=1,1=2,2=3,3=4)\n"); printf("-d Channel delay \n"); printf("-v Starting UE velocity in km/h, runs from 'v' to 'v+50km/h'. If n_frames is 1 just 'v' is simulated \n"); printf("-V Ending UE velocity in km/h, runs from 'v' to 'V'"); printf("-L rootSequenceIndex (0-837)\n"); printf("-Z NCS_config (ZeroCorrelationZone) (0-15)\n"); printf("-H Run with High-Speed Flag enabled \n"); printf("-R Number of PRB (6,15,25,50,75,100)\n"); printf("-F Input filename (.txt format) for RX conformance testing\n"); exit (-1); break; } } if (transmission_mode==2) n_tx=2; lte_param_init(n_tx, n_tx, n_rx, transmission_mode, extended_prefix_flag, FDD, Nid_cell, 3, N_RB_DL, threequarter_fs, osf, 0); if (snr1set==0) { if (n_frames==1) snr1 = snr0+.1; else snr1 = snr0+5.0; } if (ue_speed1set==0) { if (n_frames==1) ue_speed1 = ue_speed0+10; else ue_speed1 = ue_speed0+50; } printf("SNR0 %f, SNR1 %f\n",snr0,snr1); frame_parms = &eNB->frame_parms; txdata = UE->common_vars.txdata; printf("txdata %p\n",&txdata[0][subframe*frame_parms->samples_per_tti]); s_re = malloc(2*sizeof(double*)); s_im = malloc(2*sizeof(double*)); r_re = malloc(2*sizeof(double*)); r_im = malloc(2*sizeof(double*)); nsymb = (frame_parms->Ncp == 0) ? 14 : 12; printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d\n",NUMBER_OF_OFDM_CARRIERS, frame_parms->Ncp,frame_parms->samples_per_tti,nsymb); msg("[SIM] Using SCM/101\n"); UE2eNB = new_channel_desc_scm(UE->frame_parms.nb_antennas_tx, eNB->frame_parms.nb_antennas_rx, channel_model, N_RB2sampling_rate(eNB->frame_parms.N_RB_UL), N_RB2channel_bandwidth(eNB->frame_parms.N_RB_UL), 0.0, delay, 0); if (UE2eNB==NULL) { msg("Problem generating channel model. Exiting.\n"); exit(-1); } for (i=0; i<2; i++) { s_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); bzero(s_re[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); s_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); bzero(s_im[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); r_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); bzero(r_re[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); r_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); bzero(r_im[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double)); } UE->frame_parms.prach_config_common.rootSequenceIndex=rootSequenceIndex; UE->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex=0; UE->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig=NCS_config; UE->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag=hs_flag; UE->frame_parms.prach_config_common.prach_ConfigInfo.prach_FreqOffset=0; eNB->frame_parms.prach_config_common.rootSequenceIndex=rootSequenceIndex; eNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex=0; eNB->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig=NCS_config; eNB->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag=hs_flag; eNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_FreqOffset=0; eNB->node_function = eNodeB_3GPP; eNB->proc.subframe_rx = subframe; eNB->proc.subframe_prach = subframe; /* N_ZC not used later, so prach_fmt is also useless, don't set */ //prach_fmt = get_prach_fmt(eNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex, // eNB->frame_parms.frame_type); /* N_ZC not used later, no need to set */ //N_ZC = (prach_fmt <4)?839:139; compute_prach_seq(&eNB->frame_parms.prach_config_common,eNB->frame_parms.frame_type,eNB->X_u); compute_prach_seq(&UE->frame_parms.prach_config_common,UE->frame_parms.frame_type,UE->X_u); UE->prach_vars[0]->amp = AMP; UE->prach_resources[0] = &prach_resources; if (preamble_tx == 99) preamble_tx = (uint16_t)(taus()&0x3f); if (n_frames == 1) printf("raPreamble %d\n",preamble_tx); UE->prach_resources[0]->ra_PreambleIndex = preamble_tx; UE->prach_resources[0]->ra_TDD_map_index = 0; tx_lev = generate_prach(UE, 0, //eNB_id, subframe, 0); //Nf /* tx_lev_dB not used later, no need to set */ //tx_lev_dB = (unsigned int) dB_fixed(tx_lev); write_output("txsig0_new.m","txs0", &txdata[0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1); //write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1); // multipath channel dump_prach_config(&eNB->frame_parms,subframe); for (i=0; i<2*frame_parms->samples_per_tti; i++) { for (aa=0; aa<1; aa++) { if (awgn_flag == 0) { s_re[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)]); s_im[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]); } else { for (aarx=0; aarx<eNB->frame_parms.nb_antennas_rx; aarx++) { if (aa==0) { r_re[aarx][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)]); r_im[aarx][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]); } else { r_re[aarx][i] += ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)]); r_im[aarx][i] += ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]); } } } } } for (SNR=snr0; SNR<snr1; SNR+=.2) { for (ue_speed=ue_speed0; ue_speed<ue_speed1; ue_speed+=10) { delay_avg = 0.0; // max Doppler shift UE2eNB->max_Doppler = 1.9076e9*(ue_speed/3.6)/3e8; printf("n_frames %d SNR %f\n",n_frames,SNR); prach_errors=0; for (trial=0; trial<n_frames; trial++) { sigma2_dB = 10*log10((double)tx_lev) - SNR; if (n_frames==1) printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f\n",sigma2_dB,SNR,10*log10((double)tx_lev)); //AWGN sigma2 = pow(10,sigma2_dB/10); // printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB); if (awgn_flag == 0) { multipath_tv_channel(UE2eNB,s_re,s_im,r_re,r_im, 2*frame_parms->samples_per_tti,0); } if (n_frames==1) { printf("rx_level data symbol %f, tx_lev %f\n", 10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)), 10*log10(tx_lev)); } for (i=0; i<frame_parms->samples_per_tti; i++) { for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) { ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) (.167*(r_re[aa][i] +sqrt(sigma2/2)*gaussdouble(0.0,1.0))); ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) (.167*(r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0))); } } rx_prach(eNB, preamble_energy_list, preamble_delay_list, 0, //Nf 0); //tdd_mapindex preamble_energy_max = preamble_energy_list[0]; preamble_max = 0; for (i=1; i<64; i++) { if (preamble_energy_max < preamble_energy_list[i]) { // printf("preamble %d => %d\n",i,preamble_energy_list[i]); preamble_energy_max = preamble_energy_list[i]; preamble_max = i; } } if (preamble_max!=preamble_tx) prach_errors++; else { delay_avg += (double)preamble_delay_list[preamble_max]; } if (n_frames==1) { for (i=0; i<64; i++) if (i==preamble_tx) printf("****** preamble %d : energy %d, delay %d\n",i,preamble_energy_list[i],preamble_delay_list[i]); else printf("preamble %d : energy %d, delay %d\n",i,preamble_energy_list[i],preamble_delay_list[i]); write_output("prach0.m","prach0", &txdata[0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1); write_output("prachF0.m","prachF0", &eNB->prach_vars.prachF[0],24576,1,1); write_output("rxsig0.m","rxs0", &eNB->common_vars.rxdata[0][0][subframe*frame_parms->samples_per_tti], frame_parms->samples_per_tti,1,1); write_output("rxsigF0.m","rxsF0", eNB->prach_vars.rxsigF[0],6144,1,1); write_output("prach_preamble.m","prachp",&eNB->X_u[0],839,1,1); } } printf("SNR %f dB, UE Speed %f km/h: errors %d/%d (delay %f)\n",SNR,ue_speed,prach_errors,n_frames,delay_avg/(double)(n_frames-prach_errors)); //printf("(%f,%f)\n",ue_speed,(double)prach_errors/(double)n_frames); } // UE Speed loop //printf("SNR %f dB, UE Speed %f km/h: errors %d/%d (delay %f)\n",SNR,ue_speed,prach_errors,n_frames,delay_avg/(double)(n_frames-prach_errors)); // printf("(%f,%f)\n",SNR,(double)prach_errors/(double)n_frames); } //SNR loop for (i=0; i<2; i++) { free(s_re[i]); free(s_im[i]); free(r_re[i]); free(r_im[i]); } free(s_re); free(s_im); free(r_re); free(r_im); lte_sync_time_free(); return(0); } /* for (i=1;i<4;i++) memcpy((void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[i*12*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*2], (void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[0], 12*OFDM_SYMBOL_SIZE_SAMPLES_NO_PREFIX*2); */