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876902492294ff10245bfbcc56a3ec5dd0318f88
openairinterface5g/openair1/SIMULATION/LTE_PHY/mbmssim.c
T
Florian Kaltenberger 8769024922 Merge remote-tracking branch 'origin/develop' into feature-21-TM7 
Conflicts:
	cmake_targets/CMakeLists.txt
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/INIT/lte_param_init.c
	openair1/PHY/LTE_ESTIMATION/lte_dl_channel_estimation.c
	openair1/PHY/LTE_ESTIMATION/lte_ue_measurements.c
	openair1/PHY/LTE_REFSIG/lte_dl_uespec.c
	openair1/PHY/LTE_TRANSPORT/dci.c
	openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
	openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
	openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c
	openair1/PHY/LTE_TRANSPORT/initial_sync.c
	openair1/PHY/LTE_TRANSPORT/pbch.c
	openair1/PHY/LTE_TRANSPORT/pilots.c
	openair1/PHY/LTE_TRANSPORT/pmch.c
	openair1/PHY/LTE_TRANSPORT/proto.h
	openair1/PHY/defs.h
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair1/SCHED/phy_procedures_lte_ue.c
	openair1/SIMULATION/LTE_PHY/dlsim.c
	openair1/SIMULATION/LTE_PHY/mbmssim.c
	openair1/SIMULATION/LTE_PHY/pdcchsim.c
	openair1/SIMULATION/LTE_PHY/ulsim.c
	openair2/ENB_APP/enb_config.c
	openair2/RRC/LITE/rrc_eNB.c
	targets/ARCH/EXMIMO/USERSPACE/LIB/openair0_lib.c
	targets/RT/USER/lte-softmodem.c
	targets/RT/USER/lte-ue.c
	targets/RT/USER/sched_rx_pdsch.c
	targets/SIMU/USER/init_lte.c
	targets/SIMU/USER/oaisim_functions.c
2016-11-18 15:35:21 +01:00

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/*
* 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 <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.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"
#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#endif //XFORMS
#include "OCG_vars.h"
#include "unitary_defs.h"
PHY_VARS_eNB *eNB;
PHY_VARS_UE *UE;
DCI1E_5MHz_2A_M10PRB_TDD_t DLSCH_alloc_pdu2_1E[2];
#define UL_RB_ALLOC 0x1ff;
#define CCCH_RB_ALLOC computeRIV(eNB->frame_parms.N_RB_UL,0,2)
int main(int argc, char **argv)
{
char c;
int i,l,l2,aa,aarx,k;
double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0;
uint8_t snr1set=0;
double snr_step=1,input_snr_step=1;
int **txdata;
double s_re0[2*30720],s_im0[2*30720],s_re1[2*30720],s_im1[2*30720];
double r_re0[2*30720],r_im0[2*30720],r_re1[2*30720],r_im1[2*30720];
double *s_re[2]={s_re0,s_re1},*s_im[2]={s_im0,s_im1},*r_re[2]={r_re0,r_re1},*r_im[2]={r_im0,r_im1};
double iqim = 0.0;
int subframe=1;
char fname[40];//, vname[40];
uint8_t transmission_mode = 1,n_tx=1,n_rx=2;
uint16_t Nid_cell=0;
FILE *fd;
int eNB_id = 0;
unsigned char mcs=0,awgn_flag=0,round;
int n_frames=1;
channel_desc_t *eNB2UE;
uint32_t nsymb,tx_lev,tx_lev_dB;
uint8_t extended_prefix_flag=1;
LTE_DL_FRAME_PARMS *frame_parms;
int hold_channel=0;
uint16_t NB_RB=25;
int tdd_config=3;
SCM_t channel_model=MBSFN;
unsigned char *input_buffer;
unsigned short input_buffer_length;
unsigned int ret;
unsigned int trials,errs[4]= {0,0,0,0}; //,round_trials[4]={0,0,0,0};
uint8_t N_RB_DL=25,osf=1;
uint32_t perfect_ce = 0;
lte_frame_type_t frame_type = FDD;
uint32_t Nsoft = 1827072;
/*
#ifdef XFORMS
FD_lte_phy_scope_ue *form_ue;
char title[255];
fl_initialize (&argc, argv, NULL, 0, 0);
form_ue = create_lte_phy_scope_ue();
sprintf (title, "LTE DL SCOPE UE");
fl_show_form (form_ue->lte_phy_scope_ue, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);
#endif
*/
logInit();
number_of_cards = 1;
while ((c = getopt (argc, argv, "ahA:Cp:n:s:S:t:x:y:z:N:F:R:O:dm:i:Y")) != -1) {
switch (c) {
case 'a':
awgn_flag=1;
break;
case 'd':
frame_type = 0;
break;
case 'n':
n_frames = atoi(optarg);
break;
case 'm':
mcs=atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
msg("Setting SNR0 to %f\n",snr0);
break;
case 'i':
input_snr_step = atof(optarg);
break;
case 'S':
snr1 = atof(optarg);
snr1set=1;
msg("Setting SNR1 to %f\n",snr1);
break;
case 'p': // subframe no;
subframe=atoi(optarg);
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);
if ((N_RB_DL!=6) && (N_RB_DL!=25) && (N_RB_DL!=50) && (N_RB_DL!=100)) {
printf("Unsupported Bandwidth %d\n",N_RB_DL);
exit(-1);
}
break;
case 'O':
osf = atoi(optarg);
break;
case 'Y':
perfect_ce = 1;
break;
default:
case 'h':
printf("%s -h(elp) -p(subframe) -N cell_id -g channel_model -n n_frames -t Delayspread -s snr0 -S snr1 -i snr increment -z RXant \n",argv[0]);
printf("-h This message\n");
printf("-a Use AWGN Channel\n");
printf("-p Use extended prefix mode\n");
printf("-d Use TDD\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("-t Delay spread for multipath channel\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used in eNB\n");
printf("-z Number of RX antennas used in UE\n");
printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-N Nid_cell\n");
printf("-R N_RB_DL\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
printf("-f Output filename (.txt format) for Pe/SNR results\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
exit (-1);
break;
}
}
if (awgn_flag == 1)
channel_model = AWGN;
// check that subframe is legal for eMBMS
if ((subframe == 0) || (subframe == 5) || // TDD and FDD SFn 0,5;
((frame_type == FDD) && ((subframe == 4) || (subframe == 9))) || // FDD SFn 4,9;
((frame_type == TDD ) && ((subframe<3) || (subframe==6)))) { // TDD SFn 1,2,6;
printf("Illegal subframe %d for eMBMS transmission (frame_type %d)\n",subframe,frame_type);
exit(-1);
}
if (transmission_mode==2)
n_tx=2;
lte_param_init(n_tx,
n_rx,
transmission_mode,
extended_prefix_flag,
frame_type,
Nid_cell,
tdd_config,
N_RB_DL,
0,
osf,
perfect_ce);
if (snr1set==0) {
if (n_frames==1)
snr1 = snr0+.1;
else
snr1 = snr0+5.0;
}
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
frame_parms = &eNB->frame_parms;
if (awgn_flag == 0)
sprintf(fname,"embms_%d_%d.m",mcs,N_RB_DL);
else
sprintf(fname,"embms_awgn_%d_%d.m",mcs,N_RB_DL);
if (!(fd = fopen(fname,"w"))) {
printf("Cannot open %s, check permissions\n",fname);
exit(-1);
}
if (awgn_flag==0)
fprintf(fd,"SNR_%d_%d=[];errs_mch_%d_%d=[];mch_trials_%d_%d=[];\n",
mcs,N_RB_DL,
mcs,N_RB_DL,
mcs,N_RB_DL);
else
fprintf(fd,"SNR_awgn_%d_%d=[];errs_mch_awgn_%d_%d=[];mch_trials_awgn_%d_%d=[];\n",
mcs,N_RB_DL,
mcs,N_RB_DL,
mcs,N_RB_DL);
fflush(fd);
txdata = eNB->common_vars.txdata[0];
nsymb = 12;
printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d, AWGN %d\n",NUMBER_OF_OFDM_CARRIERS,
frame_parms->Ncp,frame_parms->samples_per_tti,nsymb,awgn_flag);
eNB2UE = new_channel_desc_scm(eNB->frame_parms.nb_antennas_tx,
UE->frame_parms.nb_antennas_rx,
channel_model,
N_RB2sampling_rate(eNB->frame_parms.N_RB_DL),
N_RB2channel_bandwidth(eNB->frame_parms.N_RB_DL),
0,
0,
0);
// Create transport channel structures for 2 transport blocks (MIMO)
eNB->dlsch_MCH = new_eNB_dlsch(1,8,Nsoft,N_RB_DL,0,&eNB->lte_frame_parms);
if (!eNB->dlsch_MCH) {
printf("Can't get eNB dlsch structures\n");
exit(-1);
}
UE->dlsch_MCH[0] = new_ue_dlsch(1,8,Nsoft,MAX_TURBO_ITERATIONS_MBSFN,N_RB_DL,0);
eNB->frame_parms.num_MBSFN_config = 1;
eNB->frame_parms.MBSFN_config[0].radioframeAllocationPeriod = 0;
eNB->frame_parms.MBSFN_config[0].radioframeAllocationOffset = 0;
eNB->frame_parms.MBSFN_config[0].fourFrames_flag = 0;
eNB->frame_parms.MBSFN_config[0].mbsfn_SubframeConfig=0xff; // activate all possible subframes
UE->frame_parms.num_MBSFN_config = 1;
UE->frame_parms.MBSFN_config[0].radioframeAllocationPeriod = 0;
UE->frame_parms.MBSFN_config[0].radioframeAllocationOffset = 0;
UE->frame_parms.MBSFN_config[0].fourFrames_flag = 0;
UE->frame_parms.MBSFN_config[0].mbsfn_SubframeConfig=0xff; // activate all possible subframes
fill_eNB_dlsch_MCH(eNB,mcs,1,0);
fill_UE_dlsch_MCH(UE,mcs,1,0,0);
if (is_pmch_subframe(0,subframe,&eNB->frame_parms)==0) {
printf("eNB is not configured for MBSFN in subframe %d\n",subframe);
exit(-1);
} else if (is_pmch_subframe(0,subframe,&UE->frame_parms)==0) {
printf("UE is not configured for MBSFN in subframe %d\n",subframe);
exit(-1);
}
input_buffer_length = eNB->dlsch_MCH->harq_processes[0]->TBS/8;
input_buffer = (unsigned char *)malloc(input_buffer_length+4);
memset(input_buffer,0,input_buffer_length+4);
for (i=0; i<input_buffer_length+4; i++) {
input_buffer[i]= (unsigned char)(taus()&0xff);
}
snr_step = input_snr_step;
for (SNR=snr0; SNR<snr1; SNR+=snr_step) {
UE->proc.proc_rxtx[0].frame_tx=0;
eNB->proc.proc_rxtx[0].frame_tx=0;
eNB->proc.proc_rxtx[0].subframe_tx=subframe;
errs[0]=0;
errs[1]=0;
errs[2]=0;
errs[3]=0;
/*
round_trials[0] = 0;
round_trials[1] = 0;
round_trials[2] = 0;
round_trials[3] = 0;*/
printf("********************** SNR %f (step %f)\n",SNR,snr_step);
for (trials = 0; trials<n_frames; trials++) {
// printf("Trial %d\n",trials);
fflush(stdout);
round=0;
//if (trials%100==0)
//eNB2UE[0]->first_run = 1;
eNB2UE->first_run = 1;
memset(&eNB->common_vars.txdataF[0][0][0],0,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX*sizeof(int32_t));
generate_mch(eNB,&eNB->proc.proc_rxtx[0],input_buffer);
PHY_ofdm_mod(eNB->common_vars.txdataF[0][0], // input,
txdata[0], // output
frame_parms->ofdm_symbol_size,
LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*nsymb, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
CYCLIC_PREFIX);
if (n_frames==1) {
write_output("txsigF0.m","txsF0", &eNB->common_vars.txdataF[0][0][subframe*nsymb*eNB->frame_parms.ofdm_symbol_size],
nsymb*eNB->frame_parms.ofdm_symbol_size,1,1);
//if (eNB->frame_parms.nb_antennas_tx>1)
//write_output("txsigF1.m","txsF1", &eNB->lte_eNB_common_vars.txdataF[eNB_id][1][subframe*nsymb*eNB->frame_parms.ofdm_symbol_size],nsymb*eNB->frame_parms.ofdm_symbol_size,1,1);
}
tx_lev = 0;
for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
tx_lev += signal_energy(&eNB->common_vars.txdata[eNB_id][aa]
[subframe*eNB->frame_parms.samples_per_tti],
eNB->frame_parms.samples_per_tti);
}
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
if (n_frames==1) {
printf("tx_lev = %d (%d dB)\n",tx_lev,tx_lev_dB);
// write_output("txsig0.m","txs0", &eNB->common_vars.txdata[0][0][subframe* eNB->frame_parms.samples_per_tti],
// eNB->frame_parms.samples_per_tti,1,1);
}
for (i=0; i<2*frame_parms->samples_per_tti; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
s_re[aa][i] = ((double)(((short *)eNB->common_vars.txdata[0][aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)]);
s_im[aa][i] = ((double)(((short *)eNB->common_vars.txdata[0][aa]))[(2*subframe*UE->frame_parms.samples_per_tti) +(i<<1)+1]);
}
}
//Multipath channel
multipath_channel(eNB2UE,s_re,s_im,r_re,r_im,
2*frame_parms->samples_per_tti,hold_channel);
//AWGN
sigma2_dB = 10*log10((double)tx_lev) +10*log10((double)eNB->frame_parms.ofdm_symbol_size/(NB_RB*12)) - SNR;
sigma2 = pow(10,sigma2_dB/10);
if (n_frames==1)
printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
for (i=0; i<2*frame_parms->samples_per_tti; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
//printf("s_re[0][%d]=> %f , r_re[0][%d]=> %f\n",i,s_re[aa][i],i,r_re[aa][i]);
((short*) UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti)+2*i] =
(short) (r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*) UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti)+2*i+1] =
(short) (r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
}
}
for (l=2; l<12; l++) {
slot_fep_mbsfn(UE,
l,
subframe%10,
0,
0);
if (UE->perfect_ce==1) {
// fill in perfect channel estimates
freq_channel(eNB2UE,UE->frame_parms.N_RB_DL,12*UE->frame_parms.N_RB_DL + 1);
for(k=0; k<NUMBER_OF_eNB_MAX; k++) {
for(aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
for (i=0; i<frame_parms->N_RB_DL*12; i++) {
((int16_t *) UE->common_vars.dl_ch_estimates[k][(aa<<1)+aarx])[2*i+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(eNB2UE->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].x*AMP);
((int16_t *) UE->common_vars.dl_ch_estimates[k][(aa<<1)+aarx])[2*i+1+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(eNB2UE->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].y*AMP);
}
}
}
}
}
if (l==6)
for (l2=2;l2<7;l2++)
rx_pmch(UE,
0,
subframe%10,
l2);
if (l==6)
for (l2=2;l2<7;l2++)
rx_pmch(UE,
0,
subframe%10,
l2);
if (l==11)
for (l2=7;l2<12;l2++)
rx_pmch(UE,
0,
subframe%10,
l2);
}
UE->dlsch_MCH[0]->harq_processes[0]->G = get_G(&UE->frame_parms,
UE->dlsch_MCH[0]->harq_processes[0]->nb_rb,
UE->dlsch_MCH[0]->harq_processes[0]->rb_alloc_even,
get_Qm(UE->dlsch_MCH[0]->harq_processes[0]->mcs),
1,2,
UE->proc.proc_rxtx[0].frame_tx,subframe,0);
UE->dlsch_MCH[0]->harq_processes[0]->Qm = get_Qm(UE->dlsch_MCH[0]->harq_processes[0]->mcs);
dlsch_unscrambling(&UE->frame_parms,1,UE->dlsch_MCH[0],
UE->dlsch_MCH[0]->harq_processes[0]->G,
UE->pdsch_vars_MCH[0]->llr[0],0,subframe<<1);
ret = dlsch_decoding(UE,
UE->pdsch_vars_MCH[0]->llr[0],
&UE->frame_parms,
UE->dlsch_MCH[0],
UE->dlsch_MCH[0]->harq_processes[0],
subframe,
0,0,0);
if (n_frames==1)
printf("MCH decoding returns %d\n",ret);
if (ret == (1+UE->dlsch_MCH[0]->max_turbo_iterations))
errs[0]++;
UE->proc.proc_rxtx[0].frame_tx++;
eNB->proc.proc_rxtx[0].frame_tx++;
}
printf("errors %d/%d (Pe %e)\n",errs[round],trials,(double)errs[round]/trials);
if (awgn_flag==0)
fprintf(fd,"SNR_%d_%d = [SNR_%d_%d %f]; errs_mch_%d_%d =[errs_mch_%d_%d %d]; mch_trials_%d_%d =[mch_trials_%d_%d %d];\n",
mcs,N_RB_DL,mcs,N_RB_DL,SNR,
mcs,N_RB_DL,mcs,N_RB_DL,errs[0],
mcs,N_RB_DL,mcs,N_RB_DL,trials);
else
fprintf(fd,"SNR_awgn_%d = [SNR_awgn_%d %f]; errs_mch_awgn_%d =[errs_mch_awgn_%d %d]; mch_trials_awgn_%d =[mch_trials_awgn_%d %d];\n",
N_RB_DL,N_RB_DL,SNR,
N_RB_DL,N_RB_DL,errs[0],
N_RB_DL,N_RB_DL,trials);
fflush(fd);
if (errs[0] == 0)
break;
}
if (n_frames==1) {
printf("Dumping PMCH files ( G %d)\n",UE->dlsch_MCH[0]->harq_processes[0]->G);
dump_mch(UE,0,
UE->dlsch_MCH[0]->harq_processes[0]->G,
subframe);
}
printf("Freeing dlsch structures\n");
free_eNB_dlsch(eNB->dlsch_MCH);
free_ue_dlsch(UE->dlsch_MCH[0]);
fclose(fd);
return(0);
}
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