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da8a7991372d8236e27fd715e510f75baeb0f7a5
openairinterface5g/openair1/SIMULATION/LTE_RELAY/relay_sim.c
T
ghaddab da8a799137 License updated 
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5711 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-08-13 13:25:17 +00:00

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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include "SIMULATION/TOOLS/defs.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/vars.h"
#include "MAC_INTERFACE/vars.h"
#ifdef IFFT_FPGA
#include "PHY/LTE_REFSIG/mod_table.h"
#endif
#include "ARCH/CBMIMO1/DEVICE_DRIVER/vars.h"
#include "SCHED/defs.h"
#include "SCHED/vars.h"
//#define AWGN
//#define NO_DCI
#define BW 7.68
#define RBmask0 0x00fc00fc
#define RBmask1 0x0
#define RBmask2 0x0
#define RBmask3 0x0
unsigned char dlsch_cqi;
PHY_VARS_eNB *PHY_vars_eNb;
PHY_VARS_UE *PHY_vars_UE;
void lte_param_init(unsigned char N_tx, unsigned char N_rx,unsigned char transmission_mode,uint8_t extended_prefix_flag) {
LTE_DL_FRAME_PARMS *lte_frame_parms;
printf("Start lte_param_init\n");
PHY_vars_eNb = malloc(sizeof(PHY_VARS_eNB));
PHY_vars_UE = malloc(sizeof(PHY_VARS_UE));
PHY_config = malloc(sizeof(PHY_CONFIG));
mac_xface = malloc(sizeof(MAC_xface));
randominit(0);
set_taus_seed(0);
lte_frame_parms = &(PHY_vars_eNb->lte_frame_parms);
lte_frame_parms->N_RB_DL = 25; //50 for 10MHz and 25 for 5 MHz
lte_frame_parms->N_RB_UL = 25;
lte_frame_parms->Ncp = extended_prefix_flag;
lte_frame_parms->Nid_cell = 0;
lte_frame_parms->nushift = 0;
lte_frame_parms->nb_antennas_tx = N_tx;
lte_frame_parms->nb_antennas_rx = N_rx;
lte_frame_parms->first_dlsch_symbol = 4;
lte_frame_parms->num_dlsch_symbols = (lte_frame_parms->Ncp==0) ? 8: 6;
lte_frame_parms->Ng_times6 = 1;
// lte_frame_parms->Csrs = 2;
// lte_frame_parms->Bsrs = 0;
// lte_frame_parms->kTC = 0;
// lte_frame_parms->n_RRC = 0;
lte_frame_parms->mode1_flag = (transmission_mode == 1)? 1 : 0;
init_frame_parms(lte_frame_parms);
copy_lte_parms_to_phy_framing(lte_frame_parms, &(PHY_config->PHY_framing));
phy_init_top(N_tx,lte_frame_parms); //allocation
lte_frame_parms->twiddle_fft = twiddle_fft;
lte_frame_parms->twiddle_ifft = twiddle_ifft;
lte_frame_parms->rev = rev;
PHY_vars_UE->lte_frame_parms = *lte_frame_parms;
PHY_vars_eNb->lte_frame_parms = *lte_frame_parms;
/*
lte_gold(lte_frame_parms);
generate_ul_ref_sigs();
generate_ul_ref_sigs_rx();
generate_64qam_table();
generate_16qam_table();
generate_RIV_tables();
generate_pcfich_reg_mapping(lte_frame_parms);
generate_phich_reg_mapping(lte_frame_parms);
*/
phy_init_lte_top(lte_frame_parms);
phy_init_lte_ue(&PHY_vars_UE->lte_frame_parms,
&PHY_vars_UE->lte_ue_common_vars,
PHY_vars_UE->lte_ue_dlsch_vars,
PHY_vars_UE->lte_ue_dlsch_vars_SI,
PHY_vars_UE->lte_ue_dlsch_vars_ra,
PHY_vars_UE->lte_ue_pbch_vars,
PHY_vars_UE->lte_ue_pdcch_vars,
PHY_vars_UE);
phy_init_lte_eNB(&PHY_vars_eNb->lte_frame_parms,
&PHY_vars_eNb->lte_eNB_common_vars,
PHY_vars_eNb->lte_eNB_ulsch_vars,
0,
PHY_vars_eNb,
0,
0);
printf("Done lte_param_init\n");
}
DCI0_5MHz_TDD0_t UL_alloc_pdu;
DCI1A_5MHz_TDD_1_6_t CCCH_alloc_pdu;
DCI2_5MHz_2A_L10PRB_TDD_t DLSCH_alloc_pdu1;
DCI2_5MHz_2A_M10PRB_TDD_t DLSCH_alloc_pdu2;
#define UL_RB_ALLOC 0x1ff;
#define CCCH_RB_ALLOC computeRIV(PHY_vars_eNb->lte_frame_parms.N_RB_UL,0,2)
#define DLSCH_RB_ALLOC 0x1fbf // igore DC component,RB13
//#define DLSCH_RB_ALLOC 0x1f0f // igore DC component,RB13
int main(int argc, char **argv) {
char c;
int i,aa,aarx;
int s,Kr,Kr_bytes;
double sigma2, sigma2_dB=10,SNR,snr0=-2.0,snr1,rate;
//int **txdataF, **txdata;
int **txdata;
#ifdef IFFT_FPGA
int **txdataF2;
#endif
LTE_DL_FRAME_PARMS *frame_parms;
//LTE_UE_COMMON *lte_ue_common_vars = (LTE_UE_COMMON *)malloc(sizeof(LTE_UE_COMMON));
double **s_re,**s_im,**r_re,**r_im;
double amps[8] = {0.3868472 , 0.3094778 , 0.1547389 , 0.0773694 , 0.0386847 , 0.0193424 , 0.0096712 , 0.0038685};
double aoa=.03;
double ricean_factor=0.0000005;
double Td=0.8;
double iqim=0.0;
uint8_t channel_length,nb_taps=8;
uint8_t extended_prefix_flag=0,transmission_mode=1,n_tx=1,n_rx=1;
int eNb_id = 0, eNb_id_i = 1;
unsigned char mcs,dual_stream_UE = 0,awgn_flag=0,round,dci_flag=0;
unsigned short NB_RB=conv_nprb(0,DLSCH_RB_ALLOC);
unsigned char Ns,l,m;
// unsigned char *input_data,*decoded_output;
unsigned char *input_buffer;
unsigned short input_buffer_length;
unsigned int ret;
unsigned int coded_bits_per_codeword,nsymb,dci_cnt;
unsigned int tx_lev,tx_lev_dB,trials,errs[4]={0,0,0,0},round_trials[4]={0,0,0,0},dci_errors=0,dlsch_active=0,num_layers;
int re_allocated;
FILE *bler_fd;
char bler_fname[20];
// unsigned char pbch_pdu[6];
DCI_ALLOC_t dci_alloc[8],dci_alloc_rx[8];
// FILE *rx_frame_file;
int n_frames;
channel_desc_t *eNB2UE;
uint8_t num_pdcch_symbols=3,num_pdcch_symbols_dummy;
uint8_t pilot1,pilot2,pilot3;
dci_alloc[0].dci_length = sizeof_DCI0_5MHz_TDD_0_t;
channel_length = (int) 11+2*BW*Td;
num_layers = 1;
//int cont=0;
// default parameters
//for (cont =0;cont<29;cont++){
mcs = 0;
n_frames = 1000;
snr0 = 0;
//if(snr0>0)
// snr0 = 0;
while ((c = getopt (argc, argv, "hadpm:n:s:t:c:r:x:y:z:")) != -1) {
switch (c)
{
case 'a':
awgn_flag = 1;
break;
case 'd':
dci_flag = 1;
break;
case 'm':
mcs = atoi(optarg);
break;
case 'n':
n_frames = atoi(optarg);
break;
case 'r':
ricean_factor = pow(10,-.1*atof(optarg));
if (ricean_factor>1) {
printf("Ricean factor must be between 0 and 1\n");
exit(-1);
}
break;
case 's':
snr0 = atoi(optarg);
break;
case 't':
Td= atof(optarg);
break;
case 'p':
extended_prefix_flag=1;
break;
case 'c':
num_pdcch_symbols=atoi(optarg);
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 'h':
default:
printf("%s -h(elp) -a(wgn on) -d(ci decoding on) -p(extended prefix on) -m mcs -n n_frames -s snr0 -t Delayspread -x transmission mode (1,2,6) -y TXant -z RXant\n",argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\n");
printf("-m MCS\n");
printf("-d Transmit the DCI and compute its error statistics and the overall throughput\n");
printf("-p Use extended prefix mode\n");
printf("-n Number of frames to simulate\n");
printf("-s Starting SNR, runs from SNR to SNR + 5 dB. If n_frames is 1 then just SNR is simulated and MATLAB/OCTAVE output is generated\n");
printf("-t Delay spread for multipath channel\n");
printf("-r Ricean factor (dB, 0 dB = Rayleigh, 100 dB = almost AWGN)\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");
exit(1);
break;
}
}
lte_param_init(n_tx,n_rx,transmission_mode,extended_prefix_flag);
printf("Setting mcs = %d\n",mcs);
printf("NPRB = %d\n",NB_RB);
printf("n_frames = %d\n",n_frames);
printf("Transmission mode %d with %dx%d antenna configuration\n",transmission_mode,n_tx,n_rx);
/*
snr0 = -8 + mcs;
if(snr0>0)
snr0 = 7;
*/
snr1 = snr0+5.0;
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
/*
txdataF = (int **)malloc16(2*sizeof(int*));
txdataF[0] = (int *)malloc16(FRAME_LENGTH_BYTES);
txdataF[1] = (int *)malloc16(FRAME_LENGTH_BYTES);
txdata = (int **)malloc16(2*sizeof(int*));
txdata[0] = (int *)malloc16(FRAME_LENGTH_BYTES);
txdata[1] = (int *)malloc16(FRAME_LENGTH_BYTES);
*/
frame_parms = &PHY_vars_eNb->lte_frame_parms;
#ifdef IFFT_FPGA
txdata = (int **)malloc16(2*sizeof(int*));
txdata[0] = (int *)malloc16(FRAME_LENGTH_BYTES);
txdata[1] = (int *)malloc16(FRAME_LENGTH_BYTES);
bzero(txdata[0],FRAME_LENGTH_BYTES);
bzero(txdata[1],FRAME_LENGTH_BYTES);
txdataF2 = (int **)malloc16(2*sizeof(int*));
txdataF2[0] = (int *)malloc16(FRAME_LENGTH_BYTES_NO_PREFIX);
txdataF2[1] = (int *)malloc16(FRAME_LENGTH_BYTES_NO_PREFIX);
bzero(txdataF2[0],FRAME_LENGTH_BYTES_NO_PREFIX);
bzero(txdataF2[1],FRAME_LENGTH_BYTES_NO_PREFIX);
#else
txdata = PHY_vars_eNb->lte_eNB_common_vars.txdata[eNb_id];
#endif
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
r_re = malloc(2*sizeof(double*));
r_im = malloc(2*sizeof(double*));
// r_re0 = malloc(2*sizeof(double*));
// r_im0 = malloc(2*sizeof(double*));
nsymb = (PHY_vars_eNb->lte_frame_parms.Ncp == 0) ? 14 : 12;
coded_bits_per_codeword = get_G(&PHY_vars_eNb->lte_frame_parms,NB_RB,get_Qm(mcs),num_pdcch_symbols);
#ifdef TBS_FIX
rate = (double)3*dlsch_tbs25[get_I_TBS(mcs)][NB_RB-1]/(4*coded_bits_per_codeword);
#else
rate = (double)dlsch_tbs25[get_I_TBS(mcs)][NB_RB-1]/(coded_bits_per_codeword);
#endif
rate*=get_Qm(mcs);
printf("Rate = %f (TBS %d,mod %d)\n",rate,(int)(rate*coded_bits_per_codeword),
get_Qm(mcs));
sprintf(bler_fname,"bler_%d.m",mcs);
bler_fd = fopen(bler_fname,"w");
//fprintf(bler_fd,"bler = [");
for (i=0;i<2;i++) {
s_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
s_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
// r_re0[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
// bzero(r_re0[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
// r_im0[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
// bzero(r_im0[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
}
PHY_vars_UE->lte_ue_pdcch_vars[0]->crnti = 0x1234;
// Fill in UL_alloc
UL_alloc_pdu.type = 0;
UL_alloc_pdu.hopping = 0;
UL_alloc_pdu.rballoc = UL_RB_ALLOC;
UL_alloc_pdu.mcs = 1;
UL_alloc_pdu.ndi = 1;
UL_alloc_pdu.TPC = 0;
UL_alloc_pdu.cqi_req = 1;
CCCH_alloc_pdu.type = 0;
CCCH_alloc_pdu.vrb_type = 0;
CCCH_alloc_pdu.rballoc = CCCH_RB_ALLOC;
CCCH_alloc_pdu.ndi = 1;
CCCH_alloc_pdu.mcs = 1;
CCCH_alloc_pdu.harq_pid = 0;
DLSCH_alloc_pdu2.rah = 0;
DLSCH_alloc_pdu2.rballoc = DLSCH_RB_ALLOC;
DLSCH_alloc_pdu2.TPC = 0;
DLSCH_alloc_pdu2.dai = 0;
DLSCH_alloc_pdu2.harq_pid = 0;
DLSCH_alloc_pdu2.tb_swap = 0;
DLSCH_alloc_pdu2.mcs1 = mcs;
DLSCH_alloc_pdu2.ndi1 = 1;
DLSCH_alloc_pdu2.rv1 = 0;
// Forget second codeword
DLSCH_alloc_pdu2.tpmi = 0 ; // precoding
// Create transport channel structures for SI pdus
PHY_vars_eNb->dlsch_eNb_SI = new_eNb_dlsch(1,1,0);
PHY_vars_UE->dlsch_ue_SI[0] = new_ue_dlsch(1,1,0);
PHY_vars_eNb->dlsch_eNb_SI->rnti = SI_RNTI;
PHY_vars_UE->dlsch_ue_SI[0]->rnti = SI_RNTI;
eNB2UE = new_channel_desc(PHY_vars_eNb->lte_frame_parms.nb_antennas_tx,
PHY_vars_UE->lte_frame_parms.nb_antennas_rx,
nb_taps,
channel_length,
amps,
NULL,
NULL,
Td,
BW,
ricean_factor,
aoa,
.999,
0,
0,
0);
// Create transport channel structures for 2 transport blocks (MIMO)
for (i=0;i<2;i++) {
PHY_vars_eNb->dlsch_eNb[0][i] = new_eNb_dlsch(1,8,0);
PHY_vars_UE->dlsch_ue[0][i] = new_ue_dlsch(1,8,0);
if (!PHY_vars_eNb->dlsch_eNb[0][i]) {
printf("Can't get eNb dlsch structures\n");
exit(-1);
}
if (!PHY_vars_UE->dlsch_ue[0][i]) {
printf("Can't get ue dlsch structures\n");
exit(-1);
}
PHY_vars_eNb->dlsch_eNb[0][i]->rnti = 0x1234;
PHY_vars_UE->dlsch_ue[0][i]->rnti = 0x1234;
}
if (DLSCH_alloc_pdu2.tpmi == 5) {
PHY_vars_eNb->dlsch_eNb[0][0]->pmi_alloc = (unsigned short)(taus()&0xffff);
PHY_vars_UE->dlsch_ue[0][0]->pmi_alloc = PHY_vars_eNb->dlsch_eNb[0][0]->pmi_alloc;
PHY_vars_eNb->eNB_UE_stats[0].DL_pmi_single = PHY_vars_eNb->dlsch_eNb[0][0]->pmi_alloc;
}
generate_eNb_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2,
0x1234,
format2_2A_M10PRB,
PHY_vars_eNb->dlsch_eNb[0],
&PHY_vars_eNb->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI,
0); //change this later
/*
generate_eNb_dlsch_params_from_dci(0,
&CCCH_alloc_pdu,
SI_RNTI,
format1A,
&dlsch_eNb_cntl,
PHY_vars_eNb->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI);
*/
// input_data = (unsigned char*) malloc(block_length/8);
// decoded_output = (unsigned char*) malloc(block_length/8);
// DCI
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2,sizeof(DCI2_5MHz_2A_M10PRB_TDD_t));
dci_alloc[0].dci_length = sizeof_DCI2_5MHz_2A_M10PRB_TDD_t;
dci_alloc[0].L = 3;
dci_alloc[0].rnti = 0x1234;
/*
memcpy(&dci_alloc[0].dci_pdu[0],&CCCH_alloc_pdu,sizeof(DCI1A_5MHz_TDD_1_6_t));
dci_alloc[0].dci_length = sizeof_DCI1A_5MHz_TDD_1_6_t;
dci_alloc[0].L = 3;
dci_alloc[0].rnti = SI_RNTI;
*/
memcpy(&dci_alloc[1].dci_pdu[0],&UL_alloc_pdu,sizeof(DCI0_5MHz_TDD0_t));
dci_alloc[1].dci_length = sizeof_DCI0_5MHz_TDD_0_t;
dci_alloc[1].L = 3;
dci_alloc[1].rnti = 0x1234;
input_buffer_length = PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->TBS/8;
printf("dlsch0: TBS %d\n",PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->TBS);
printf("Input buffer size %d bytes\n",input_buffer_length);
input_buffer = (unsigned char *)malloc(input_buffer_length+4);
for (i=0;i<input_buffer_length;i++)
input_buffer[i]= (unsigned char)(taus()&0xff);
for (SNR=snr0;SNR<snr1;SNR+=.2) {
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;
dci_errors=0;
round=0;
for (trials = 0;trials<n_frames;trials++) {
// printf("Trial %d\n",trials);
fflush(stdout);
round=0;
while (round < 4) {
// printf("Trial %d : Round %d ",trials,round);
round_trials[round]++;
if (round == 0) {
PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->Ndi = 1;
PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->rvidx = round>>1;
DLSCH_alloc_pdu2.ndi1 = 1;
DLSCH_alloc_pdu2.rv1 = 0;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2,sizeof(DCI2_5MHz_2A_M10PRB_TDD_t));
}
else {
PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->Ndi = 0;
PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->rvidx = round>>1;
DLSCH_alloc_pdu2.ndi1 = 0;
DLSCH_alloc_pdu2.rv1 = round>>1;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2,sizeof(DCI2_5MHz_2A_M10PRB_TDD_t));
}
dlsch_encoding(input_buffer,
&PHY_vars_eNb->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNb->dlsch_eNb[0][0]);
dlsch_scrambling(&PHY_vars_eNb->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNb->dlsch_eNb[0][0],
coded_bits_per_codeword,
0,
0);
if (n_frames==1) {
for (s=0;s<PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->C;s++) {
if (s<PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->Kplus;
Kr_bytes = Kr>>3;
for (i=0;i<Kr_bytes;i++)
printf("%d : (%x)\n",i,PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->c[s][i]);
}
}
re_allocated = dlsch_modulation(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id],
1024,
0,
&PHY_vars_eNb->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNb->dlsch_eNb[0][0]);
if (n_frames==1)
printf("RB count %d (%d,%d)\n",re_allocated,re_allocated/PHY_vars_eNb->lte_frame_parms.num_dlsch_symbols/12,PHY_vars_eNb->lte_frame_parms.num_dlsch_symbols);
if (num_layers>1)
re_allocated = dlsch_modulation(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id],
1024,
i,
&PHY_vars_eNb->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNb->dlsch_eNb[0][1]);
num_pdcch_symbols_dummy = generate_dci_top(1,
0,
dci_alloc,
0,
1024,
&PHY_vars_eNb->lte_frame_parms,
PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id],
0);
generate_pilots(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id],
1024,
&PHY_vars_eNb->lte_frame_parms,
eNb_id,
LTE_NUMBER_OF_SUBFRAMES_PER_FRAME);
#ifdef IFFT_FPGA
if (n_frames==1) {
write_output("txsigF0.m","txsF0", PHY_vars_eNb->lte_eNB_common_vars->txdataF[0][0],300*120,1,4);
write_output("txsigF1.m","txsF1", PHY_vars_eNb->lte_eNB_common_vars->txdataF[0][1],300*120,1,4);
}
// do talbe lookup and write results to txdataF2
for (aa=0;aa<PHY_vars_eNb->lte_frame_parms.nb_antennas_tx;aa++) {
ind = 0;
// for (i=0;i<FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX;i++)
for (i=0;i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX;i++)
if (((i%512)>=1) && ((i%512)<=150))
txdataF2[aa][i] = ((int*)mod_table)[PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][aa][ind++]];
else if ((i%512)>=362)
txdataF2[aa][i] = ((int*)mod_table)[PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][aa][ind++]];
else
txdataF2[aa][i] = 0;
// printf("ind=%d\n",ind);
}
tx_lev = 0;
for (aa=0; aa<PHY_vars_eNb->lte_frame_parms.nb_antennas_tx; aa++) {
if (frame_parms->Ncp == 1)
PHY_ofdm_mod(txdataF2[aa], // input
txdata[aa], // output
PHY_vars_eNb->lte_frame_parms.log2_symbol_size, // log2_fft_size
2*nsymb,//NUMBER_OF_SYMBOLS_PER_FRAME, // number of symbols
PHY_vars_eNb->lte_frame_parms.nb_prefix_samples, // number of prefix samples
PHY_vars_eNb->lte_frame_parms.twiddle_ifft, // IFFT twiddle factors
PHY_vars_eNb->lte_frame_parms.rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
normal_prefix_mod(txdataF2[aa],txdata[aa],2*nsymb,frame_parms);
}
tx_lev += signal_energy(&txdata[aa][(PHY_vars_eNb->lte_frame_parms.ofdm_symbol_size+PHY_vars_eNb->lte_frame_parms.nb_prefix_samples0)],
OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
}
#else //IFFT_FPGA
if (n_frames==1) {
write_output("txsigF0.m","txsF0", PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][0],PHY_vars_eNb->lte_frame_parms.samples_per_tti,1,1);
if (PHY_vars_eNb->lte_frame_parms.nb_antennas_tx>1)
write_output("txsigF1.m","txsF1", PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][1],PHY_vars_eNb->lte_frame_parms.samples_per_tti,1,1);
}
tx_lev = 0;
for (aa=0; aa<PHY_vars_eNb->lte_frame_parms.nb_antennas_tx; aa++) {
if (frame_parms->Ncp == 1)
PHY_ofdm_mod(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][aa], // input
txdata[aa], // output
PHY_vars_eNb->lte_frame_parms.log2_symbol_size, // log2_fft_size
2*nsymb,//NUMBER_OF_SYMBOLS_PER_FRAME, // number of symbols
PHY_vars_eNb->lte_frame_parms.nb_prefix_samples, // number of prefix samples
PHY_vars_eNb->lte_frame_parms.twiddle_ifft, // IFFT twiddle factors
PHY_vars_eNb->lte_frame_parms.rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
normal_prefix_mod(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id][aa],
txdata[aa],
2*nsymb,
frame_parms);
}
tx_lev += signal_energy(&txdata[aa][0],
frame_parms->ofdm_symbol_size);
}
#endif //IFFT_FPGA
// printf("tx_lev = %d (%d)\n",tx_lev,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
if (n_frames==1)
write_output("txsig0.m","txs0", txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
for (i=0;i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES;i++) {
for (aa=0;aa<PHY_vars_eNb->lte_frame_parms.nb_antennas_tx;aa++) {
if (awgn_flag == 0) {
s_re[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)]);
s_im[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]);
}
else {
for (aarx=0;aarx<PHY_vars_UE->lte_frame_parms.nb_antennas_rx;aarx++) {
if (aa==0) {
r_re[aarx][i] = ((double)(((short *)txdata[aa]))[(i<<1)]);
r_im[aarx][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]);
}
else {
r_re[aarx][i] += ((double)(((short *)txdata[aa]))[(i<<1)]);
r_im[aarx][i] += ((double)(((short *)txdata[aa]))[(i<<1)+1]);
}
}
}
}
}
if (awgn_flag == 0) {
multipath_channel(eNB2UE,s_re,s_im,r_re,r_im,
2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
}
//(double)tx_lev_dB - (SNR+sigma2_dB));
// printf("tx_lev_dB %d\n",tx_lev_dB);
sigma2_dB = tx_lev_dB +10*log10(PHY_vars_eNb->lte_frame_parms.ofdm_symbol_size/(NB_RB*12)) - SNR;
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0;aa<PHY_vars_eNb->lte_frame_parms.nb_antennas_rx;aa++) {
((short*) PHY_vars_UE->lte_ue_common_vars.rxdata[aa])[2*i] = (short) (r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*) PHY_vars_UE->lte_ue_common_vars.rxdata[aa])[2*i+1] = (short) (r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
}
}
// lte_sync_time_init(PHY_vars_eNb->lte_frame_parms,lte_ue_common_vars);
// lte_sync_time(lte_ue_common_vars->rxdata, PHY_vars_eNb->lte_frame_parms);
// lte_sync_time_free();
/*
// optional: read rx_frame from file
if ((rx_frame_file = fopen("rx_frame.dat","r")) == NULL)
{
printf("Cannot open rx_frame.m data file\n");
exit(0);
}
result = fread((void *)PHY_vars->rx_vars[0].RX_DMA_BUFFER,4,FRAME_LENGTH_COMPLEX_SAMPLES,rx_frame_file);
printf("Read %d bytes\n",result);
result = fread((void *)PHY_vars->rx_vars[1].RX_DMA_BUFFER,4,FRAME_LENGTH_COMPLEX_SAMPLES,rx_frame_file);
printf("Read %d bytes\n",result);
fclose(rx_frame_file);
*/
if (n_frames==1) {
printf("RX level in null symbol %d\n",dB_fixed(signal_energy(&PHY_vars_UE->lte_ue_common_vars.rxdata[0][160+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES],OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("RX level in data symbol %d\n",dB_fixed(signal_energy(&PHY_vars_UE->lte_ue_common_vars.rxdata[0][160+(2*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES)],OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("rx_level Null symbol %f\n",10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2,256+(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES))));
printf("rx_level data symbol %f\n",10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2,256+(2*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES))));
}
if (PHY_vars_eNb->lte_frame_parms.Ncp == 0) { // normal prefix
pilot1 = 4;
pilot2 = 7;
pilot3 = 11;
}
else { // extended prefix
pilot1 = 3;
pilot2 = 6;
pilot3 = 9;
}
// Inner receiver scheduling for 3 slots
for (Ns=0;Ns<3;Ns++) {
for (l=0;l<pilot2;l++) {
// printf("Ns %d, l %d\n",Ns,l);
slot_fep(&PHY_vars_UE->lte_frame_parms,
&PHY_vars_UE->lte_ue_common_vars,
l,
Ns%20,
0,
0);
if (l==0)
lte_ue_measurements(PHY_vars_UE,
&PHY_vars_UE->lte_frame_parms,
0,
1,
0);
// printf("rx_avg_power_dB %d\n",PHY_vars->PHY_measurements.rx_avg_power_dB[0]);
// printf("n0_power_dB %d\n",PHY_vars->PHY_measurements.n0_power_dB[0]);
if ((Ns==0) && (l==pilot1)) {// process symbols 0,1,2
PHY_vars_UE->lte_ue_pdcch_vars[0]->crnti = 0x1234;
PHY_vars_UE->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
if (dci_flag == 1) {
rx_pdcch(&PHY_vars_UE->lte_ue_common_vars,
PHY_vars_UE->lte_ue_pdcch_vars,
&PHY_vars_UE->lte_frame_parms,
0,
eNb_id,
(PHY_vars_UE->lte_frame_parms.mode1_flag == 1) ? SISO : ALAMOUTI,
0);
dci_cnt = dci_decoding_procedure(PHY_vars_UE->lte_ue_pdcch_vars,
dci_alloc_rx,
eNb_id,
&PHY_vars_UE->lte_frame_parms,
get_mi(&PHY_vars_UE->lte_frame_parms,0),
SI_RNTI,
RA_RNTI);
// printf("dci_cnt %d\n",dci_cnt);
// write_output("dlsch00_ch0.m","dl00_ch0",&(lte_ue_common_vars->dl_ch_estimates[eNb_id][0][0]),(6*(lte_frame_parms.ofdm_symbol_size)),1,1);
// write_output("rxsigF0.m","rxsF0", PHY_vars_UE->lte_ue_common_vars.rxdataF[0],2*12*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,2,1);
// write_output("pdcch_rxF_llr.m","pdcch_llr",PHY_vars_UE->lte_ue_pdcch_vars[eNb_id]->llr,2400,1,4);
// exit(-1);
if (dci_cnt==0) {
dlsch_active = 0;
if (round==0) {
dci_errors++;
round=5;
errs[0]++;
round_trials[0]++;
// printf("DCI error trial %d errs[0] %d\n",trials,errs[0]);
}
// for (i=1;i<=round;i++)
// round_trials[i]--;
// round=5;
}
for (i=0;i<dci_cnt;i++) {
if ((dci_alloc_rx[i].rnti == C_RNTI) && (dci_alloc_rx[i].format == format2_2A_M10PRB) &&
(generate_ue_dlsch_params_from_dci(0,
(DCI2_5MHz_2A_M10PRB_TDD_t *)&dci_alloc_rx[i].dci_pdu,
C_RNTI,
format2_2A_M10PRB,
PHY_vars_UE->dlsch_ue[0],
&PHY_vars_UE->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI)==0)) {
dlsch_active = 1;
}
else {
dlsch_active = 0;
if (round==0) {
dci_errors++;
errs[0]++;
round_trials[0]++;
if (n_frames==1) {
printf("DCI misdetection trial %d\n",trials);
round=5;
}
}
// for (i=1;i<=round;i++)
// round_trials[i]--;
// round=5;
}
}
/*
else if ((dci_alloc_rx[i].rnti == SI_RNTI) && (dci_alloc_rx[i].format == format1A))
generate_ue_dlsch_params_from_dci(0,
(DCI1A_5MHz_TDD_1_6_t *)&dci_alloc_rx[i].dci_pdu,
SI_RNTI,
format1A,
&dlsch_ue_cntl,
lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI);
*/
// msg("dci_cnt = %d\n",dci_cnt);
} // if dci_flag==1
else { //dci_flag == 0
generate_ue_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2,
C_RNTI,
format2_2A_M10PRB,
PHY_vars_UE->dlsch_ue[0],
&PHY_vars_UE->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI);
dlsch_active = 1;
} // if dci_flag == 1
}
if (dlsch_active == 1) {
if ((Ns==1) && (l==0)) {// process symbols 3,4,5
for (m=num_pdcch_symbols;
m<pilot2;
m++) {
// printf("Demodulating DLSCH for symbol %d (pilot 2 %d)\n",m,pilot2);
if (rx_dlsch(&PHY_vars_UE->lte_ue_common_vars,
PHY_vars_UE->lte_ue_dlsch_vars,
&PHY_vars_UE->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE->dlsch_ue[0],
m,
(m==num_pdcch_symbols)?1:0,
dual_stream_UE,
&PHY_vars_UE->PHY_measurements,
0)==-1) {
dlsch_active = 0;
break;
}
}
}
if ((Ns==1) && (l==pilot1)) {// process symbols 6,7,8
/*
if (rx_pbch(lte_ue_common_vars,
lte_ue_pbch_vars[0],
lte_frame_parms,
0,
SISO)) {
msg("pbch decoded sucessfully!\n");
}
else {
msg("pbch not decoded!\n");
}
*/
for (m=pilot2;
m<pilot3;
m++)
if (rx_dlsch(&PHY_vars_UE->lte_ue_common_vars,
PHY_vars_UE->lte_ue_dlsch_vars,
&PHY_vars_UE->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE->dlsch_ue[0],
m,
0,
dual_stream_UE,
&PHY_vars_UE->PHY_measurements,
0)==-1) {
dlsch_active=0;
break;
}
}
if ((Ns==2) && (l==0)) // process symbols 10,11, do deinterleaving for TTI
for (m=pilot3;
m<PHY_vars_UE->lte_frame_parms.symbols_per_tti;
m++)
if (rx_dlsch(&PHY_vars_UE->lte_ue_common_vars,
PHY_vars_UE->lte_ue_dlsch_vars,
&PHY_vars_UE->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE->dlsch_ue[0],
m,
0,
dual_stream_UE,
&PHY_vars_UE->PHY_measurements,
0)==-1) {
dlsch_active=0;
break;
}
}
}
}
if (dlsch_active == 1) {
if (n_frames==1) {
write_output("rxsig0.m","rxs0", PHY_vars_UE->lte_ue_common_vars.rxdata[0],PHY_vars_UE->lte_frame_parms.samples_per_tti,1,1);
write_output("dlsch00_ch0.m","dl00_ch0",&(PHY_vars_UE->lte_ue_common_vars.dl_ch_estimates[eNb_id][0][0]),(6*(PHY_vars_UE->lte_frame_parms.ofdm_symbol_size)),1,1);
/*
write_output("dlsch01_ch0.m","dl01_ch0",&(lte_ue_common_vars->dl_ch_estimates[eNb_id][1][0]),(6*(lte_frame_parms.ofdm_symbol_size)),1,1);
write_output("dlsch10_ch0.m","dl10_ch0",&(lte_ue_common_vars->dl_ch_estimates[eNb_id][2][0]),(6*(lte_frame_parms.ofdm_symbol_size)),1,1);
write_output("dlsch11_ch0.m","dl11_ch0",&(lte_ue_common_vars->dl_ch_estimates[eNb_id][3][0]),(6*(lte_frame_parms.ofdm_symbol_size)),1,1);
*/
write_output("rxsigF0.m","rxsF0", PHY_vars_UE->lte_ue_common_vars.rxdataF[0],2*12*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,2,1);
write_output("rxsigF0_ext.m","rxsF0_ext", PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->rxdataF_ext[0],2*12*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,1,1);
if (PHY_vars_UE->lte_frame_parms.nb_antennas_rx>1) {
write_output("rxsig1.m","rxs1", PHY_vars_UE->lte_ue_common_vars.rxdata[1],PHY_vars_UE->lte_frame_parms.samples_per_tti,1,1);
write_output("rxsigF1.m","rxsF1", PHY_vars_UE->lte_ue_common_vars.rxdataF[1],2*12*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,2,1);
write_output("rxsigF1_ext.m","rxsF1_ext", PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->rxdataF_ext[1],2*12*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,1,1);
}
write_output("dlsch00_ch0_ext.m","dl00_ch0_ext",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[0],300*12,1,1);
if (PHY_vars_eNb->lte_frame_parms.nb_antennas_tx>1) {
write_output("dlsch01_ch0_ext.m","dl01_ch0_ext",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[2],300*12,1,1);
}
write_output("pdcchF0_ext.m","pdcchF_ext", PHY_vars_UE->lte_ue_pdcch_vars[eNb_id]->rxdataF_ext[0],2*3*PHY_vars_UE->lte_frame_parms.ofdm_symbol_size,1,1);
write_output("pdcch00_ch0_ext.m","pdcch00_ch0_ext",PHY_vars_UE->lte_ue_pdcch_vars[eNb_id]->dl_ch_estimates_ext[0],300*3,1,1);
/*
write_output("dlsch01_ch0_ext.m","dl01_ch0_ext",lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[1],300*12,1,1);
write_output("dlsch10_ch0_ext.m","dl10_ch0_ext",lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[2],300*12,1,1);
write_output("dlsch11_ch0_ext.m","dl11_ch0_ext",lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[3],300*12,1,1);
write_output("dlsch_rho.m","dl_rho",lte_ue_dlsch_vars[eNb_id]->rho[0],300*12,1,1);
*/
write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->rxdataF_comp[0],300*(-(PHY_vars_UE->lte_frame_parms.Ncp*2)+14),1,1);
write_output("pdcch_rxF_comp0.m","pdcch0_rxF_comp0",PHY_vars_UE->lte_ue_pdcch_vars[eNb_id]->rxdataF_comp[0],4*300,1,1);
write_output("dlsch_rxF_llr.m","dlsch_llr",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->llr[0],coded_bits_per_codeword,1,0);
write_output("pdcch_rxF_llr.m","pdcch_llr",PHY_vars_UE->lte_ue_pdcch_vars[eNb_id]->llr,2400,1,4);
write_output("dlsch_mag1.m","dlschmag1",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->dl_ch_mag,300*12,1,1);
write_output("dlsch_mag2.m","dlschmag2",PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->dl_ch_magb,300*12,1,1);
}
// printf("Calling decoding (Ndi %d, harq_pid %d)\n",
// dlsch_ue[0]->harq_processes[0]->Ndi,
// dlsch_ue[0]->current_harq_pid);
dlsch_unscrambling(&PHY_vars_UE->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_UE->dlsch_ue[0][0],
coded_bits_per_codeword,
PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->llr[0],
0,
0);
ret = dlsch_decoding(PHY_vars_UE->lte_ue_dlsch_vars[eNb_id]->llr[0],
&PHY_vars_UE->lte_frame_parms,
PHY_vars_UE->dlsch_ue[0][0],
0,
num_pdcch_symbols);
if (ret <= MAX_TURBO_ITERATIONS) {
if (n_frames==1)
printf("No DLSCH errors found\n");
// exit(-1);
round=5;
}
else {
errs[round]++;
if (n_frames==1) {
printf("DLSCH errors found\n");
for (s=0;s<PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->C;s++) {
if (s<PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->Kplus;
Kr_bytes = Kr>>3;
printf("Decoded_output (Segment %d):\n",s);
for (i=0;i<Kr_bytes;i++)
printf("%d : %x (%x)\n",i,PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->c[s][i],PHY_vars_UE->dlsch_ue[0][0]->harq_processes[0]->c[s][i]^PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->c[s][i]);
}
exit(-1);
}
// printf("round %d errors %d/%d\n",round,errs[round],trials);
round++;
if (n_frames==1)
printf("DLSCH in error in round %d\n",round);
}
}
} //round
// printf("\n");
if ((errs[0]>=100) && (trials>(n_frames/2)))
break;
} //trials
printf("\n**********************SNR = %f dB (tx_lev %f, sigma2_dB %f)**************************\n",
SNR,
(double)tx_lev_dB+10*log10(PHY_vars_UE->lte_frame_parms.ofdm_symbol_size/(NB_RB*12)),
sigma2_dB);
printf("Errors (%d/%d %d/%d %d/%d %d/%d), Pe = (%e,%e,%e,%e), dci_errors %d/%d, Pe = %e => effective rate %f (%f), normalized delay %f (%f)\n",
errs[0],
round_trials[0],
errs[1],
round_trials[1],
errs[2],
round_trials[2],
errs[3],
round_trials[3],
(double)errs[0]/(round_trials[0]),
(double)errs[1]/(round_trials[1]),
(double)errs[2]/(round_trials[2]),
(double)errs[3]/(round_trials[3]),
dci_errors,
round_trials[0],
(double)dci_errors/(round_trials[0]),
rate*((double)(round_trials[0]-dci_errors)/((double)round_trials[0] + round_trials[1] + round_trials[2] + round_trials[3])),
rate,
(1.0*(round_trials[0]-errs[0])+2.0*(round_trials[1]-errs[1])+3.0*(round_trials[2]-errs[2])+4.0*(round_trials[3]-errs[3]))/((double)round_trials[0])/(double)PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->TBS,
(1.0*(round_trials[0]-errs[0])+2.0*(round_trials[1]-errs[1])+3.0*(round_trials[2]-errs[2])+4.0*(round_trials[3]-errs[3]))/((double)round_trials[0]));
fprintf(bler_fd,"%f;%d;%d;%f;%d;%d;%d;%d;%d;%d;%d;%d;%d\n",
SNR,
mcs,
PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->TBS,
rate,
errs[0],
round_trials[0],
errs[1],
round_trials[1],
errs[2],
round_trials[2],
errs[3],
round_trials[3],
dci_errors);
if (((double)errs[0]/(round_trials[0]))<1e-2)
break;
} // SNR
fclose(bler_fd);
printf("Freeing dlsch structures\n");
for (i=0;i<2;i++) {
printf("eNb %d\n",i);
free_eNb_dlsch(PHY_vars_eNb->dlsch_eNb[0][i]);
printf("UE %d\n",i);
free_ue_dlsch(PHY_vars_UE->dlsch_ue[0][i]);
}
#ifdef IFFT_FPGA
printf("Freeing transmit signals\n");
free(txdataF2[0]);
free(txdataF2[1]);
free(txdataF2);
free(txdata[0]);
free(txdata[1]);
free(txdata);
#endif
printf("Freeing channel I/O\n");
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);
}
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