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Commit 8da62be9 authored by Florian Kaltenberger's avatar Florian Kaltenberger
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moving old simulators 

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7234 818b1a75-f10b-46b9-bf7c-635c3b92a50f
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Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
openair1/SIMULATION/LTE_RELAY/Makefile deleted 100644 → 0
View file @ 350ee35d
include $(OPENAIR_HOME)/common/utils/Makefile.inc
TOP_DIR = $(OPENAIR1_DIR)
OPENAIR1_TOP = $(OPENAIR1_DIR)
OPENAIR2_TOP = $(OPENAIR2_DIR)
OPENAIR3 = $(OPENAIR3_DIR)
CFLAGS += -m32 -DPHYSIM -DNODE_RG -DUSER_MODE -DPC_TARGET -DPC_DSP -DNB_ANTENNAS_RX=2 -DNB_ANTENNAS_TXRX=2 -DNB_ANTENNAS_TX=2 -DPHY_CONTEXT=1
LFLAGS = -lm -lblas
CFLAGS += -DOPENAIR_LTE #-DOFDMA_ULSCH -DIFFT_FPGA -DIFFT_FPGA_UE
#CFLAGS += -DTBS_FIX
CFLAGS += -DCELLULAR
ASN1_MSG_INC = $(OPENAIR2_DIR)/RRC/LITE/MESSAGES
ifdef EMOS
CFLAGS += -DEMOS
endif
ifdef DEBUG_PHY
CFLAGS += -DDEBUG_PHY
endif
ifdef MeNBMUE
CFLAGS += -DMeNBMUE
endif
ifdef MU_RECEIVER
CFLAGS += -DMU_RECEIVER
endif
ifdef ZBF_ENABLED
CFLAGS += -DNULL_SHAPE_BF_ENABLED
endif
ifdef RANDOM_BF
CFLAGS += -DRANDOM_BF
endif
ifdef PBS_SIM
CFLAGS += -DPBS_SIM
endif
ifdef XFORMS
CFLAGS += -DXFORMS
LFLAGS += -lforms
endif
ifdef PERFECT_CE
CFLAGS += -DPERFECT_CE
endif
CFLAGS += -DNO_RRM -DOPENAIR2 -DPHY_ABSTRACTION
CFLAGS += -I/usr/include/X11 -I/usr/X11R6/include
include $(TOP_DIR)/PHY/Makefile.inc
SCHED_OBJS = $(TOP_DIR)/SCHED/phy_procedures_lte_common.o $(TOP_DIR)/SCHED/phy_procedures_lte_eNb.o $(TOP_DIR)/SCHED/phy_procedures_lte_ue.o
#include $(TOP_DIR)/SCHED/Makefile.inc
include $(TOP_DIR)/SIMULATION/Makefile.inc
include $(OPENAIR2_DIR)/LAYER2/Makefile.inc
include $(OPENAIR2_DIR)/RRC/LITE/MESSAGES/Makefile.inc
CFLAGS += $(L2_incl) -I$(ASN1_MSG_INC) -I$(TOP_DIR) -I$(OPENAIR3)
EXTRA_CFLAGS =
#STATS_OBJS += $(TOP_DIR)/ARCH/CBMIMO1/DEVICE_DRIVER/cbmimo1_proc.o
#LAYER2_OBJ += $(OPENAIR2_DIR)/LAYER2/MAC/rar_tools.o
LAYER2_OBJ = $(OPENAIR2_DIR)/LAYER2/MAC/lte_transport_init.o
OBJ = $(PHY_OBJS) $(SIMULATION_OBJS) $(TOOLS_OBJS) $(SCHED_OBJS) $(LAYER2_OBJ) #$(ASN1_MSG_OBJS)
#OBJ2 = $(PHY_OBJS) $(SIMULATION_OBJS) $(TOOLS_OBJS)
ifdef XFORMS
OBJ += ../../USERSPACE_TOOLS/SCOPE/lte_scope.o
endif
all: dlsim relay_DF_sim relay_QF_sim pbchsim pdcchsim ulsim pucchsim
test: $(SIMULATION_OBJS) $(TOOLS_OBJS) $(TOP_DIR)/PHY/INIT/lte_init.o test.c
$(CC) test.c -I$(TOP_DIR) -o test $(CFLAGS) $(SIMULATION_OBJS) $(TOOLS_OBJS) -lm
$(OBJ) : %.o : %.c
@echo
@echo Compiling $< ...
@$(CC) -c $(CFLAGS) -o $@ $<
dlsim : $(OBJ) dlsim.c
@echo "Compiling dlsim.c ..."
@$(CC) dlsim.c -o dlsim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas
relay_DF_sim : $(OBJ) relay_DF_sim.c
@echo "Compiling relay_DF_sim.c ..."
@$(CC) relay_DF_sim.c -o relay_DF_sim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas
relay_QF_sim : $(OBJ) relay_QF_sim.c
@echo "Compiling relay_QF_sim.c ..."
@$(CC) relay_QF_sim.c -o relay_QF_sim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas
framegen: $(OBJ) framegen.c
@echo "Compiling framegen.c"
@$(CC) framegen.c -o framegen $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas #-lm -lblas
pbchsim : $(OBJ) pbchsim.c
@echo "Compiling pbchsim.c"
@$(CC) pbchsim.c -o pbchsim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas #-lm -lblas
pdcchsim : $(OBJ) pdcchsim.c
@echo "Compiling pdcchsim.c"
@$(CC) pdcchsim.c -o pdcchsim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas #-lm -lblas
pucchsim : $(OBJ) pucchsim.c
@echo "Compiling pucchsim.c"
@$(CC) pucchsim.c -o pucchsim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas #-lm -lblas
ulsim : $(OBJ) ulsim.c #ulsim_form.c
@echo "Compiling [ulsim.c]"
@$(CC) ulsim.c -o ulsim $(CFLAGS) $(OBJ) $(LFLAGS) #-static -L/usr/lib/libblas #-lm -lblas
clean :
rm -f $(OBJ)
rm -f *.o
cleanall : clean
rm -f relay_DF_sim relay_QF_sim dlsim pbchsim pdcchsim ulsim pucchsim
rm -f *.exe*
showcflags :
@echo $(CFLAGS)
openair1/SIMULATION/LTE_RELAY/readme.txt deleted 100644 → 0
View file @ 350ee35d
Author : Erhan YILMAZ
Contact: erhan.yilmaz@eurecom.fr
Function: relay_DF_sim.c
In this function we intend to simulate Paralel Relay Network scenario where a single source node (eNB in the simulator) communicates with a destination node via multiple relay nodes (RNs) which are connected to the destination node via finite (but sufficent to convey decode bits) capacity backhaul links.
Each RN perform FULL decoding (i.e., decode-and-forward relaying).
- Maxumim HARQ retransmision rounds is set to 4;
- An error declared, if one of the following occurs:
1- For all RNs DCI pkts are not received correctly
2- Assuming correct DCI pkts but maxumum number of iterations for the turbo decoders at at least one of the RNs (among those who have correctly got the DCI pkts) is exceeded;
// 3- Maximum number of HARQ iterations is axceeded. //
openair1/SIMULATION/LTE_RELAY/relay_DF_sim.c deleted 100644 → 0
View file @ 350ee35d
/*******************************************************************************
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, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <execinfo.h>
#include <signal.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"
#include "LAYER2/MAC/vars.h"
#include "OCG_vars.h"
#ifdef XFORMS
#include "forms.h"
#include "../../USERSPACE_TOOLS/SCOPE/lte_scope.h"
#endif
//#define AWGN
//#define NO_DCI
#define BW 7.68
/*
#define RBmask0 0x00fc00fc
#define RBmask1 0x0
#define RBmask2 0x0
#define RBmask3 0x0
*/
PHY_VARS_eNB *PHY_vars_eNB;
PHY_VARS_UE **PHY_vars_UE; // this variable is modified to enable multiple relay nodes (# Relay Node = "num_relay");
void handler(int sig)
{
void *array[10];
size_t size;
/* get void*'s for all entries on the stack */
size = backtrace(array, 10);
/* print out all the frames to stderr*/
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, 2);
exit(1);
}
#ifdef XFORMS
void do_forms(FD_lte_scope *form, LTE_DL_FRAME_PARMS *frame_parms, short **channel, short **channel_f, short **rx_sig, short **rx_sig_f, short *dlsch_comp, short* dlsch_comp_i, short* dlsch_rho,
short *dlsch_llr, int coded_bits_per_codeword)
{
int i, j, ind, k, s;
float Re, Im;
float mag_sig[NB_ANTENNAS_RX*4*NUMBER_OF_OFDM_CARRIERS*NUMBER_OF_OFDM_SYMBOLS_PER_SLOT];
float sig_time[NB_ANTENNAS_RX*4*NUMBER_OF_OFDM_CARRIERS*NUMBER_OF_OFDM_SYMBOLS_PER_SLOT];
float sig2[FRAME_LENGTH_COMPLEX_SAMPLES], time2[FRAME_LENGTH_COMPLEX_SAMPLES], I[25*12*11*4], Q[25*12*11*4], *llr, *llr_time;
float avg, cum_avg;
llr = malloc(coded_bits_per_codeword*sizeof(float));
llr_time = malloc(coded_bits_per_codeword*sizeof(float));
// Channel frequency response
cum_avg = 0;
ind = 0;
for (j=0; j<4; j++) {
for (i=0; i<frame_parms->nb_antennas_rx; i++) {
for (k=0; k<NUMBER_OF_OFDM_CARRIERS*7; k++) {
sig_time[ind] = (float)ind;
Re = (float)(channel_f[(j<<1)+i][2*k]);
Im = (float)(channel_f[(j<<1)+i][2*k+1]);
//mag_sig[ind] = (short) rand();
mag_sig[ind] = (short)10*log10(1.0+((double)Re*Re + (double)Im*Im));
cum_avg += (short)sqrt((double)Re*Re + (double)Im*Im) ;
ind++;
}
// ind += NUMBER_OF_OFDM_CARRIERS/4; // spacing for visualization
}
}
avg = cum_avg/NUMBER_OF_USEFUL_CARRIERS;
//fl_set_xyplot_ybounds(form->channel_f,30,70);
fl_set_xyplot_data(form->channel_f,sig_time,mag_sig,ind,"","","");
/*
// channel time resonse
cum_avg = 0;
ind = 0;
for (k=0; k<1; k++){
for (j=0; j<1; j++) {
for (i=0; i<frame_parms->ofdm_symbol_size; i++){
sig_time[ind] = (float)ind;
Re = (float)(channel[k+2*j][2*i]);
Im = (float)(channel[k+2*j][2*i+1]);
//mag_sig[ind] = (short) rand();
mag_sig[ind] = (short)10*log10(1.0+((double)Re*Re + (double)Im*Im));
cum_avg += (short)sqrt((double)Re*Re + (double)Im*Im) ;
ind++;
}
}
}
//fl_set_xyplot_ybounds(form->channel_t_im,10,90);
fl_set_xyplot_data(form->channel_t_im,sig_time,mag_sig,ind,"","","");
*/
// channel_t_re = rx_sig_f[0]
//for (i=0; i<FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX; i++) {
for (i=0; i<NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti/2; i++) {
sig2[i] = 10*log10(1.0+(double) ((rx_sig_f[0][4*i])*(rx_sig_f[0][4*i])+(rx_sig_f[0][4*i+1])*(rx_sig_f[0][4*i+1])));
time2[i] = (float) i;
}
//fl_set_xyplot_ybounds(form->channel_t_re,10,90);
fl_set_xyplot_data(form->channel_t_re,time2,sig2,NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti,"","","");
//fl_set_xyplot_data(form->channel_t_re,time2,sig2,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,"","","");
// channel_t_im = rx_sig[0]
//if (frame_parms->nb_antennas_rx>1) {
for (i=0; i<FRAME_LENGTH_COMPLEX_SAMPLES; i++) {
//for (i=0; i<NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti/2; i++) {
sig2[i] = 10*log10(1.0+(double) ((rx_sig[0][2*i])*(rx_sig[0][2*i])+(rx_sig[0][2*i+1])*(rx_sig[0][2*i+1])));
time2[i] = (float) i;
}
//fl_set_xyplot_ybounds(form->channel_t_im,0,100);
//fl_set_xyplot_data(form->channel_t_im,&time2[640*12*6],&sig2[640*12*6],640*12,"","","");
fl_set_xyplot_data(form->channel_t_im,time2,sig2,FRAME_LENGTH_COMPLEX_SAMPLES,"","","");
//}
/*
// PBCH LLR
j=0;
for(i=0;i<1920;i++) {
llr[j] = (float) pbch_llr[i];
llr_time[j] = (float) j;
//if (i==63)
// i=127;
//else if (i==191)
// i=319;
j++;
}
fl_set_xyplot_data(form->decoder_input,llr_time,llr,1920,"","","");
//fl_set_xyplot_ybounds(form->decoder_input,-100,100);
// PBCH I/Q
j=0;
for(i=0;i<12*12;i++) {
I[j] = pbch_comp[2*i];
Q[j] = pbch_comp[2*i+1];
j++;
//if (i==47)
// i=96;
//else if (i==191)
// i=239;
}
fl_set_xyplot_data(form->scatter_plot,I,Q,12*12,"","","");
//fl_set_xyplot_xbounds(form->scatter_plot,-100,100);
//fl_set_xyplot_ybounds(form->scatter_plot,-100,100);
// PDCCH I/Q
j=0;
for(i=0;i<12*25*3;i++) {
I[j] = pdcch_comp[2*i];
Q[j] = pdcch_comp[2*i+1];
j++;
//if (i==47)
// i=96;
//else if (i==191)
// i=239;
}
fl_set_xyplot_data(form->scatter_plot1,I,Q,12*25*3,"","","");
//fl_set_xyplot_xbounds(form->scatter_plot,-100,100);
//fl_set_xyplot_ybounds(form->scatter_plot,-100,100);
*/
// DLSCH LLR
for(i=0; i<coded_bits_per_codeword; i++) {
llr[i] = (float) dlsch_llr[i];
llr_time[i] = (float) i;
}
fl_set_xyplot_data(form->demod_out, llr_time, llr, coded_bits_per_codeword, "", "", "");
fl_set_xyplot_ybounds(form->demod_out, -1000, 1000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_comp[(2*25*12*s)+2*i];
Q[j] = dlsch_comp[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot, I, Q, j, "", "", "");
fl_set_xyplot_xbounds(form->scatter_plot, -2000, 2000);
fl_set_xyplot_ybounds(form->scatter_plot, -2000, 2000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_comp_i[(2*25*12*s)+2*i];
Q[j] = dlsch_comp_i[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot1, I, Q, j, "", "", "");
fl_set_xyplot_xbounds(form->scatter_plot1, -2000, 2000);
fl_set_xyplot_ybounds(form->scatter_plot1, -2000, 2000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_rho[(2*25*12*s)+2*i];
Q[j] = dlsch_rho[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot2, I, Q, j, "", "", "");
//fl_set_xyplot_xbounds(form->scatter_plot2,-1000,1000);
//fl_set_xyplot_ybounds(form->scatter_plot2,-1000,1000);
free(llr);
free(llr_time);
}
#endif
// In the following function the first parameter ("unsigned char num_relay") is added for # RN in the Parallel Relay Network (PRN);
void lte_param_init(unsigned char num_relay, unsigned char N_tx, unsigned char N_rx, unsigned char transmission_mode, uint8_t extended_prefix_flag, uint16_t Nid_cell, uint8_t tdd_config,
uint8_t N_RB_DL, uint8_t osf)
{
LTE_DL_FRAME_PARMS *lte_frame_parms;
int i;
unsigned int j;
printf("Start lte_param_init\n");
PHY_vars_eNB = (PHY_VARS_eNB *)malloc(sizeof(PHY_VARS_eNB));
//PHY_vars_UE = malloc(sizeof(PHY_VARS_UE));
PHY_vars_UE = (PHY_VARS_UE **)malloc(num_relay * sizeof(PHY_VARS_UE *));
if (!(PHY_vars_eNB && PHY_vars_UE)) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j] = (PHY_VARS_UE *)malloc(sizeof(PHY_VARS_UE));
if (!(PHY_vars_UE[j])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
//PHY_config = (PHY_CONFIG *)malloc(sizeof(PHY_CONFIG));
mac_xface = (MAC_xface *)malloc(sizeof(MAC_xface));
if (mac_xface == NULL) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
randominit(0);
set_taus_seed(0);
lte_frame_parms = &(PHY_vars_eNB->lte_frame_parms);
lte_frame_parms->N_RB_DL = N_RB_DL; //50 for 10MHz and 25 for 5 MHz
lte_frame_parms->N_RB_UL = N_RB_DL;
lte_frame_parms->Ncp = extended_prefix_flag;
lte_frame_parms->Nid_cell = Nid_cell;
lte_frame_parms->nushift = 0;
lte_frame_parms->nb_antennas_tx = N_tx;
lte_frame_parms->nb_antennas_rx = N_rx;
lte_frame_parms->phich_config_common.phich_resource = oneSixth;
lte_frame_parms->tdd_config = tdd_config;
lte_frame_parms->frame_type = 1;
// lte_frame_parms->Csrs = 2;
// lte_frame_parms->Bsrs = 0;
// lte_frame_parms->kTC = 0;44
// lte_frame_parms->n_RRC = 0;
lte_frame_parms->mode1_flag = (transmission_mode == 1) ? 1 : 0;
init_frame_parms(lte_frame_parms,osf);
//copy_lte_parms_to_phy_framing(lte_frame_parms, &(PHY_config->PHY_framing));
phy_init_top(lte_frame_parms); //allocation
lte_frame_parms->twiddle_fft = twiddle_fft;
lte_frame_parms->twiddle_ifft = twiddle_ifft;
lte_frame_parms->rev = rev;
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->is_secondary_ue = 0;
PHY_vars_UE[j]->lte_frame_parms = *lte_frame_parms;
}
//PHY_vars_UE->is_secondary_ue = 0;
//PHY_vars_UE->lte_frame_parms = *lte_frame_parms;
PHY_vars_eNB->lte_frame_parms = *lte_frame_parms;
phy_init_lte_top(lte_frame_parms);
dump_frame_parms(lte_frame_parms);
for (i=0; i<3; i++)
for(j=0; j<num_relay; j++) {
lte_gold(lte_frame_parms, PHY_vars_UE[j]->lte_gold_table[i], i);
}
for(j=0; j<num_relay; j++) {
phy_init_lte_ue(&PHY_vars_UE[j]->lte_frame_parms,
&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars_SI,
PHY_vars_UE[j]->lte_ue_dlsch_vars_ra,
PHY_vars_UE[j]->lte_ue_pbch_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
PHY_vars_UE[j],
0);
}
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,
1,
0);
printf("Done lte_param_init\n");
}
//DCI2_5MHz_2A_M10PRB_TDD_t DLSCH_alloc_pdu2_2A[2];
DCI2_5MHz_2D_M10PRB_TDD_t DLSCH_alloc_pdu2_2D[2];
#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 0x1fff // all 25 RBs
//#define DLSCH_RB_ALLOC 0x0001
int main(int argc, char **argv)
{
char c;
int k, i, j, aa, aarx;
int s, Kr, Kr_bytes;
double sigma2, sigma2_dB = 10, SNR, snr0 = -2.0, snr1, rate;
double snr_step = 1, snr_int = 20;
//int **txdataF, **txdata;
int **txdata;
#ifdef IFFT_FPGA
int **txdataF2;
int ind;
#endif
LTE_DL_FRAME_PARMS *frame_parms;
double **s_re, **s_im;
double ***r_re, ***r_im; // 3-D received signal matrices in the form of r_re[# of RN][][], r_im[# of RN][][];
double forgetting_factor = 0.0; // in [0,1] 0 means a new channel every time, 1 means keep the same channel
double hold_channel = 0; // use hold_channel=1 instead of forgetting_factor=1 (more efficient)
double iqim = 0.0;
uint8_t extended_prefix_flag=0, transmission_mode=1, n_tx=1, n_rx=1;
uint16_t Nid_cell=0;
int eNB_id = 0, eNB_id_i = NUMBER_OF_eNB_MAX;
unsigned char mcs, dual_stream_UE = 0;
unsigned char awgn_flag = 0, round, dci_flag = 0;
unsigned char i_mod = 2;
unsigned short NB_RB = conv_nprb(0, DLSCH_RB_ALLOC);
unsigned char Ns, l, m;
uint16_t tdd_config = 3;
uint16_t n_rnti = 0x1234;
int n_users = 1; // if we select 'n_users = # of RN', would it be possible to simulate PRN setup?
unsigned int num_relay;
SCM_t channel_model = Rayleigh1_corr;
// unsigned char *input_data, *decoded_output;
unsigned char *input_buffer[2];
unsigned short input_buffer_length;
unsigned int ret;
unsigned int coded_bits_per_codeword, nsymb, dci_cnt, tbs;
unsigned int tx_lev, tx_lev_dB, trials, error_tot[4]= {0}, round_trials[4]= {0}, dci_errors=0, dlsch_active=0, num_layers;
int re_allocated;
FILE *bler_fd;
char bler_fname[256];
FILE *tikz_fd;
char tikz_fname[256];
FILE *input_trch_fd;
unsigned char input_trch_file=0;
FILE *input_fd=NULL;
unsigned char input_file=0;
char input_val_str[50], input_val_str2[50];
char input_trch_val[16];
double pilot_sinr, abs_channel;
// unsigned char pbch_pdu[6];
DCI_ALLOC_t dci_alloc[8];
//DCI_ALLOC_t dci_alloc_rx[8];
DCI_ALLOC_t **dci_alloc_rx; // where 1st dimension of "dci_alloc_rx" will hold "# of RNs (UEs)" in the system;
int num_common_dci=0, num_ue_spec_dci=0, num_dci=0;
// FILE *rx_frame_file;
int n_frames;
int n_ch_rlz = 1;
channel_desc_t **eNB2UE; // which is a pointer array whose size will be the "# of RNs (UEs)" in the system;
double snr;
uint8_t num_pdcch_symbols=3, num_pdcch_symbols_2=0;
uint8_t pilot1, pilot2, pilot3;
uint8_t rx_sample_offset = 0;
//char stats_buffer[4096];
//int len;
uint8_t num_rounds=4,fix_rounds=0;
uint8_t subframe=6;
int u;
int abstx=0;
int iii;
FILE *csv_fd;
char csv_fname[20];
int ch_realization;
int pmi_feedback=0;
// void *data;
// int ii;
// int bler;
double blerr, uncoded_ber, avg_ber;
short *uncoded_ber_bit;
uint8_t N_RB_DL = 25, osf = 1;
int16_t amp;
#ifdef XFORMS
FD_lte_scope *form;
char title[255];
#endif
signal(SIGSEGV, handler);
// default parameters
mcs = 0;
n_frames = 1000;
snr0 = 0;
num_layers = 1;
num_relay = 1;
while ((c = getopt(argc, argv, "hadpm:n:o:s:f:t:c:g:r:F:x:y:z:M:N:I:i:R:S:C:T:b:u:J:")) != -1) {
switch (c) {
case 'a':
awgn_flag = 1;
break;
case 'b':
tdd_config=atoi(optarg);
break;
case 'd':
dci_flag = 1;
break;
case 'm':
mcs = atoi(optarg);
break;
case 'n':
n_frames = atoi(optarg);
break;
case 'C':
Nid_cell = atoi(optarg);
break;
case 'o':
rx_sample_offset = 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);
}
*/
printf("Please use the -G option to select the channel model\n");
exit(-1);
break;
case 'F':
forgetting_factor = atof(optarg);
break;
case 's':
snr0 = atoi(optarg);
break;
case 't':
//Td= atof(optarg);
printf("Please use the -G option to select the channel model\n");
exit(-1);
break;
case 'f':
snr_step= atof(optarg);
break;
case 'M':
abstx= atof(optarg);
break;
case 'N':
n_ch_rlz= atof(optarg);
break;
case 'p':
extended_prefix_flag=1;
break;
case 'c':
num_pdcch_symbols=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;
break;
case 'I':
channel_model=Rayleigh1;
break;
case 'J':
channel_model=Rayleigh1_corr;
break;
case 'K':
channel_model=Rayleigh1_anticorr;
break;
case 'L':
channel_model=Rice8;
break;
case 'M':
channel_model=Rice1;
break;
default:
msg("Unsupported channel model!\n");
exit(-1);
}
break;
case 'x':
transmission_mode = atoi(optarg);
if ((transmission_mode!=1) && (transmission_mode!=2) && (transmission_mode!=5) && (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 'I':
input_trch_fd = fopen(optarg,"r");
input_trch_file=1;
break;
case 'i':
input_fd = fopen(optarg,"r");
input_file = 1;
dci_flag = 1;
break;
case 'R':
num_rounds = atoi(optarg);
fix_rounds = 1;
break;
case 'S':
subframe = atoi(optarg);
break;
case 'T':
n_rnti = atoi(optarg);
break;
case 'u':
dual_stream_UE = atoi(optarg);
if ((n_tx!=2) || (transmission_mode!=5)) {
msg("Unsupported nb of decoded users: %d user(s), %d user(s) to decode\n", n_tx, dual_stream_UE);
exit(-1);
}
break;
case 'J':
num_relay = atoi(optarg);
if ((num_relay < 1) || (num_relay > 8)) {
msg("Unsupported number of Relay Nodes (RNs) in the PRN system %d\n", num_relay);
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 (1,2,5,6) -y TXant -z RXant -I trch_file -J num_of_relays \n",
argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\n");
printf("-c Number of PDCCH symbols\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("-o Sample offset for receiver\n");
printf("-s Starting SNR, runs from SNR to SNR+%.1fdB in steps of %.1fdB. If n_frames is 1 then just SNR is simulated and MATLAB/OCTAVE output is generated\n", snr_int, snr_step);
printf("-f step size of SNR, default value is 1.\n");
printf("-t Delay spread for multipath channel\n");
printf("-r Ricean factor (dB, 0 dB = Rayleigh, 100 dB = almost AWGN)\n");
printf("-g [A:M] Use 3GPP 25.814 SCM-A/B/C/D('A','B','C','D') or 36-101 EPA('E'), EVA ('F'),ETU('G') models (ignores delay spread and Ricean factor), Rayghleigh8 ('H'), Rayleigh1('I'), Rayleigh1_corr('J'), Rayleigh1_anticorr ('K'), Rice8('L'), Rice1('M')\n");
printf("-F forgetting factor (0 new channel every trial, 1 channel constant\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("-R Number of HARQ rounds (fixed)\n");
printf("-M Determines whether the Absraction flag is on or Off. 1-->On and 0-->Off. Default status is Off. \n");
printf("-N Determines the number of Channel Realizations in Absraction mode. Default value is 1. \n");
printf("-I Input filename for TrCH data (binary)\n");
printf("-u Determines if the 2 streams at the UE are decoded or not. 0-->U2 is interference only and 1-->U2 is detected\n");
printf("-J Number of Relay Nodes (RNs) in the Parallel Relay Network (PRN)\n"); //= # UEs that are connected to the eNb via limited capacity backhaul;
exit(1);
break;
}
}
#ifdef XFORMS
fl_initialize(&argc, argv, NULL, 0, 0);
form = create_form_lte_scope();
sprintf(title, "LTE DLSIM SCOPE");
fl_show_form(form->lte_scope, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);
#endif
if (transmission_mode==5) {
n_users = 2;
printf("dual_stream_UE=%d\n", dual_stream_UE);
}
lte_param_init(num_relay, n_tx, n_rx, transmission_mode, extended_prefix_flag, Nid_cell, tdd_config, N_RB_DL, osf);
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, Extended Prefix %d\n", transmission_mode, n_tx, n_rx, extended_prefix_flag);
snr1 = snr0+snr_int;
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
printf("Channel Model=%d\n", channel_model);
printf("SCM-A=%d, SCM-B=%d, SCM-C=%d, SCM-D=%d, EPA=%d, EVA=%d, ETU=%d, Rayleigh8=%d, Rayleigh1=%d, Rayleigh1_corr=%d, Rayleigh1_anticorr=%d, Rice1=%d, Rice8=%d\n", SCM_A, SCM_B, SCM_C, SCM_D, EPA,
EVA, ETU, Rayleigh8, Rayleigh1, Rayleigh1_corr, Rayleigh1_anticorr, Rice1, Rice8);
//sprintf(bler_fname,"second_bler_tx%d_mcs%d_chan%d.csv", transmission_mode, mcs, channel_model);
//bler_fd = fopen(bler_fname,"w");
sprintf(bler_fname,"bler_relay_DF_mcs%d_%d-QAM_RN%d.m", mcs, (short)pow(2, get_Qm(mcs)), num_relay);
bler_fd = fopen(bler_fname, "w");
fprintf(bler_fd,"SNR; MCS; NB_OF_RELAYS; TBS; Effective_rate; Coding_Rate; err0; trials0; err1; trials1; err2; trials2; err3; trials3; dci_err; BER;\n");
if(abstx) {
// CSV file
sprintf(csv_fname,"data_out%d.m", mcs);
csv_fd = fopen(csv_fname,"w");
fprintf(csv_fd,"data_all%d=[", mcs);
}
//sprintf(tikz_fname, "second_bler_tx%d_u2=%d_mcs%d_chan%d_nsimus%d.tex",transmission_mode,dual_stream_UE,mcs,channel_model,n_frames);
sprintf(tikz_fname, "second_bler_tx%d_u2=%d_mcs%d_chan%d_nsimus%d",transmission_mode,dual_stream_UE,mcs,channel_model,n_frames);
tikz_fd = fopen(tikz_fname,"w");
//fprintf(tikz_fd,"\\addplot[color=red, mark=o] plot coordinates {");
switch (mcs) {
case 0:
fprintf(tikz_fd,"\\addplot[color=blue, mark=star] plot coordinates {");
break;
case 1:
fprintf(tikz_fd,"\\addplot[color=red, mark=star] plot coordinates {");
break;
case 2:
fprintf(tikz_fd,"\\addplot[color=green, mark=star] plot coordinates {");
break;
case 3:
fprintf(tikz_fd,"\\addplot[color=yellow, mark=star] plot coordinates {");
break;
case 4:
fprintf(tikz_fd,"\\addplot[color=black, mark=star] plot coordinates {");
break;
case 5:
fprintf(tikz_fd,"\\addplot[color=blue, mark=o] plot coordinates {");
break;
case 6:
fprintf(tikz_fd,"\\addplot[color=red, mark=o] plot coordinates {");
break;
case 7:
fprintf(tikz_fd,"\\addplot[color=green, mark=o] plot coordinates {");
break;
case 8:
fprintf(tikz_fd,"\\addplot[color=yellow, mark=o] plot coordinates {");
break;
case 9:
fprintf(tikz_fd,"\\addplot[color=black, mark=o] plot coordinates {");
break;
}
// Allocating memory and test the dynamic allocations;
s_re = (double **)malloc(2*sizeof(double *));
s_im = (double **)malloc(2*sizeof(double *));
r_re = (double ***)malloc(num_relay*sizeof(double **));
r_im = (double ***)malloc(num_relay*sizeof(double **));
dci_alloc_rx = (DCI_ALLOC_t **)malloc(num_relay*sizeof(DCI_ALLOC_t *));
if (!(s_re && s_im && r_re && r_im && dci_alloc_rx)) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for (i=0; i<2; i++) {
s_re[i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
s_im[i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
if (!(s_re[i] && s_im[i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
for(j=0; j<num_relay; j++) {
r_re[j] = (double **)malloc(2*sizeof(double*));
r_im[j] = (double **)malloc(2*sizeof(double*));
dci_alloc_rx[j] = (DCI_ALLOC_t *)malloc(8*sizeof(DCI_ALLOC_t));
if (!(r_re[j] && r_im[j] && dci_alloc_rx[j])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(i=0; i<2; i++) {
r_re[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_im[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
if (!(r_re[j][i] && r_im[j][i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
}
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->crnti = n_rnti;
}
nsymb = (PHY_vars_eNB->lte_frame_parms.Ncp == 0) ? 14 : 12;
// 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_2D[0].rah = 0;
DLSCH_alloc_pdu2_2D[0].rballoc = DLSCH_RB_ALLOC;
DLSCH_alloc_pdu2_2D[0].TPC = 0;
DLSCH_alloc_pdu2_2D[0].dai = 0;
DLSCH_alloc_pdu2_2D[0].harq_pid = 0;
DLSCH_alloc_pdu2_2D[0].tb_swap = 0;
DLSCH_alloc_pdu2_2D[0].mcs1 = mcs;
DLSCH_alloc_pdu2_2D[0].ndi1 = 1;
DLSCH_alloc_pdu2_2D[0].rv1 = 0;
// Forget second codeword
DLSCH_alloc_pdu2_2D[0].tpmi = (transmission_mode>=5 ? 5 : 0); // precoding
DLSCH_alloc_pdu2_2D[0].dl_power_off = (transmission_mode==5 ? 0 : 1);
DLSCH_alloc_pdu2_2D[1].rah = 0;
DLSCH_alloc_pdu2_2D[1].rballoc = DLSCH_RB_ALLOC;
DLSCH_alloc_pdu2_2D[1].TPC = 0;
DLSCH_alloc_pdu2_2D[1].dai = 0;
DLSCH_alloc_pdu2_2D[1].harq_pid = 0;
DLSCH_alloc_pdu2_2D[1].tb_swap = 0;
DLSCH_alloc_pdu2_2D[1].mcs1 = mcs;
DLSCH_alloc_pdu2_2D[1].ndi1 = 1;
DLSCH_alloc_pdu2_2D[1].rv1 = 0;
// Forget second codeword
DLSCH_alloc_pdu2_2D[1].tpmi = (transmission_mode>=5 ? 5 : 0) ; // precoding
DLSCH_alloc_pdu2_2D[1].dl_power_off = (transmission_mode==5 ? 0 : 1);
// Create transport channel structures for SI pdus
PHY_vars_eNB->dlsch_eNB_SI = new_eNB_dlsch(1,1,0);
PHY_vars_eNB->dlsch_eNB_SI->rnti = SI_RNTI;
//PHY_vars_UE->dlsch_ue_SI[0] = new_ue_dlsch(1,1,0);
//PHY_vars_UE->dlsch_ue_SI[0]->rnti = SI_RNTI;
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->dlsch_ue_SI[0] = new_ue_dlsch(1,1,0);
PHY_vars_UE[j]->dlsch_ue_SI[0]->rnti = SI_RNTI;
}
// Create random Channels coefficients;
eNB2UE = (channel_desc_t **)malloc(num_relay*sizeof(channel_desc_t *));
if (!(eNB2UE)) {
printf("Cannot allocate memory for Channel Descriptors!\n");
exit(EXIT_FAILURE);
}
for(j=0; j<num_relay; j++) {
eNB2UE[j] = new_channel_desc_scm(PHY_vars_eNB->lte_frame_parms.nb_antennas_tx,
PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx,
channel_model,
BW,
forgetting_factor,
rx_sample_offset,
0);
if (eNB2UE[j] == NULL) {
msg("Problem generating channel model. Exiting.\n");
exit(-1);
}
// if (hold_channel==1)
random_channel(eNB2UE[j]);
}
for (k=0; k<n_users; k++) {
// Create transport channel structures for 2 transport blocks (MIMO)
for (i=0; i<2; i++) {
PHY_vars_eNB->dlsch_eNB[k][i] = new_eNB_dlsch(1,8,0);
if (!PHY_vars_eNB->dlsch_eNB[k][i]) {
printf("Can't get eNB dlsch structures\n");
exit(-1);
}
PHY_vars_eNB->dlsch_eNB[k][i]->rnti = n_rnti+k;
}
}
for(j=0; j<num_relay; j++) {
for (i=0; i<2; i++) {
PHY_vars_UE[j]->dlsch_ue[0][i] = new_ue_dlsch(1,8,0);
if (!PHY_vars_UE[j]->dlsch_ue[0][i]) {
printf("Can't get ue dlsch structures\n");
exit(-1);
}
PHY_vars_UE[j]->dlsch_ue[0][i]->rnti = n_rnti;
}
}
if (DLSCH_alloc_pdu2_2D[0].tpmi == 5) {
PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single = (unsigned short)(taus()&0xffff);
if (n_users > 1)
PHY_vars_eNB->eNB_UE_stats[1].DL_pmi_single = (PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single ^ 0x1555); //opposite PMI
} else {
PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single = 0;
if (n_users > 1)
PHY_vars_eNB->eNB_UE_stats[1].DL_pmi_single = 0;
}
if (input_fd==NULL) {
for(k=0; k<n_users; k++) {
printf("Generating dlsch params for user %d\n",k);
generate_eNB_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2_2D[k],
n_rnti+k,
format2_2D_M10PRB,
PHY_vars_eNB->dlsch_eNB[k],
&PHY_vars_eNB->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI,
PHY_vars_eNB->eNB_UE_stats[k].DL_pmi_single);
}
num_dci = 0;
num_ue_spec_dci = 0;
num_common_dci = 0;
/*
// common DCI
memcpy(&dci_alloc[num_dci].dci_pdu[0],&CCCH_alloc_pdu,sizeof(DCI1A_5MHz_TDD_1_6_t));
dci_alloc[num_dci].dci_length = sizeof_DCI1A_5MHz_TDD_1_6_t;
dci_alloc[num_dci].L = 2;
dci_alloc[num_dci].rnti = SI_RNTI;
num_dci++;
num_common_dci++;
*/
// UE specific DCI
for(k=0; k<n_users; k++) {
memcpy(&dci_alloc[num_dci].dci_pdu[0], &DLSCH_alloc_pdu2_2D[k], sizeof(DCI2_5MHz_2D_M10PRB_TDD_t));
dci_alloc[num_dci].dci_length = sizeof_DCI2_5MHz_2D_M10PRB_TDD_t;
dci_alloc[num_dci].L = 2;
dci_alloc[num_dci].rnti = n_rnti+k;
dci_alloc[num_dci].format = format2_2D_M10PRB;
dump_dci(&PHY_vars_eNB->lte_frame_parms, &dci_alloc[num_dci]);
num_dci++;
num_ue_spec_dci++;
/*
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 = 2;
dci_alloc[1].rnti = n_rnti;
*/
}
for (k=0; k<n_users; k++) {
input_buffer_length = PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->TBS/8;
input_buffer[k] = (unsigned char *)malloc(input_buffer_length+4);
memset(input_buffer[k], 0, input_buffer_length+4);
if (input_trch_file==0) {
for (i=0; i<input_buffer_length; i++) {
input_buffer[k][i]= (unsigned char)(taus()&0xff);
}
} else {
i=0;
while ((!feof(input_trch_fd)) && (i<input_buffer_length<<3)) {
fscanf(input_trch_fd,"%s",input_trch_val);
if (input_trch_val[0] == '1')
input_buffer[k][i>>3] += (1<<(7-(i&7)));
if (i<16)
printf("input_trch_val %d : %c\n", i, input_trch_val[0]);
i++;
if (((i%8) == 0) && (i<17))
printf("%x\n", input_buffer[k][(i-1)>>3]);
}
printf("Read in %d bits\n", i);
}
}
}
for (ch_realization=0; ch_realization<n_ch_rlz; ch_realization++) {
if(abstx) {
printf("**********************Channel Realization Index = %d **************************\n", ch_realization);
}
for (SNR=snr0; SNR<snr1; SNR+=snr_step) {
error_tot[0]=0;
error_tot[1]=0;
error_tot[2]=0;
error_tot[3]=0;
round_trials[0] = 0;
round_trials[1] = 0;
round_trials[2] = 0;
round_trials[3] = 0;
dci_errors=0;
avg_ber = 0;
round=0;
for (trials=0; trials < n_frames; trials++) {
// printf("Trial %d\n",trials);
fflush(stdout);
round=0;
//if (trials%100==0)
for(j=0; j<num_relay; j++) {
eNB2UE[j]->first_run = 1;
}
while (round < num_rounds) {
round_trials[round]++;
if(transmission_mode>=5)
pmi_feedback=1;
else
pmi_feedback=0;
PMI_FEEDBACK:
// printf("Trial %d : Round %d, pmi_feedback %d \n",trials,round,pmi_feedback);
for (aa=0; aa<PHY_vars_eNB->lte_frame_parms.nb_antennas_tx; aa++) {
#ifdef IFFT_FPGA
memset(&PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id][aa][0],0,NUMBER_OF_USEFUL_CARRIERS*NUMBER_OF_SYMBOLS_PER_FRAME*sizeof(mod_sym_t));
#else
memset(&PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id][aa][0],0,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX*sizeof(mod_sym_t));
#endif
}
if (input_fd==NULL) {
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_2D[0].ndi1 = 1;
DLSCH_alloc_pdu2_2D[0].rv1 = 0;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2_2D[0],sizeof(DCI2_5MHz_2D_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_2D[0].ndi1 = 0;
DLSCH_alloc_pdu2_2D[0].rv1 = round>>1;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2_2D[0],sizeof(DCI2_5MHz_2D_M10PRB_TDD_t));
}
num_pdcch_symbols_2 = generate_dci_top(num_ue_spec_dci,
num_common_dci,
dci_alloc,
0,
1024,
&PHY_vars_eNB->lte_frame_parms,
PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
subframe);
if (num_pdcch_symbols_2 > num_pdcch_symbols) {
msg("Error: given num_pdcch_symbols not big enough\n");
exit(-1);
}
for (k=0; k<n_users; k++) {
coded_bits_per_codeword = get_G(&PHY_vars_eNB->lte_frame_parms,
PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb,
PHY_vars_eNB->dlsch_eNB[k][0]->rb_alloc,
get_Qm(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs),
num_pdcch_symbols,
subframe);
#ifdef TBS_FIX
tbs = (double)3*dlsch_tbs25[get_I_TBS(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs)][PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb-1]/4;
#else
tbs = (double)dlsch_tbs25[get_I_TBS(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs)][PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb-1];
#endif
rate = (double)tbs/(double)coded_bits_per_codeword;
uncoded_ber_bit = (short*) malloc(2*coded_bits_per_codeword);
if (trials==0 && round==0)
printf("Rate = %f (G %d, TBS %d, mod %d, pdcch_sym %d)\n", rate, coded_bits_per_codeword, tbs, get_Qm(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs), num_pdcch_symbols);
/*
// generate channel here
random_channel(eNB2UE);
// generate frequency response
freq_channel(eNB2UE,NB_RB);
// generate PMI from channel
*/
/*---------------------------------------------------------------------------------------------------*/
/* For our case our code will not enter here; since we do not assume mode 5 (MU-MIMO) transmisssion */
// use the PMI from previous trial
if (DLSCH_alloc_pdu2_2D[0].tpmi == 5) {
PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE[0]->PHY_measurements,
0); // how about this function!!! by default I put '0' as an index (no matter from which relay (or UE in this case) the feedback will come- CHECK THIS);
//PHY_vars_UE->dlsch_ue[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE->PHY_measurements,0);
for(j=0; j<num_relay; j++)
PHY_vars_UE[j]->dlsch_ue[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE[j]->PHY_measurements,0);
if (n_users>1)
PHY_vars_eNB->dlsch_eNB[1][0]->pmi_alloc = (PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc ^ 0x1555);
/*
if ((trials<10) && (round==0)) {
printf("tx PMI UE0 %x (pmi_feedback %d)\n",pmi2hex_2Ar1(PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc),pmi_feedback);
if (transmission_mode ==5)
printf("tx PMI UE1 %x\n",pmi2hex_2Ar1(PHY_vars_eNB->dlsch_eNB[1][0]->pmi_alloc));
}
*/
}
if (dlsch_encoding(input_buffer[k], &PHY_vars_eNB->lte_frame_parms, num_pdcch_symbols, PHY_vars_eNB->dlsch_eNB[k][0], subframe) < 0)
exit(-1);
// printf("Did not Crash here 1\n");
PHY_vars_eNB->dlsch_eNB[k][0]->rnti = n_rnti+k;
dlsch_scrambling(&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][0],
coded_bits_per_codeword,
0,
subframe<<1);
if (n_frames==1) {
for (s=0; s<PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->C; s++) {
if (s<PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_eNB->dlsch_eNB[k][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[k][0]->harq_processes[0]->c[s][i]);
}
}
// printf("Did not Crash here 2\n");
if (transmission_mode == 5) {
amp = (int16_t)(((int32_t)1024*ONE_OVER_SQRT2_Q15)>>15);
} else
amp = 1024;
//if (k==1)
// amp=0;
re_allocated = dlsch_modulation(PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
amp,
subframe,
&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][0]);
// printf("Did not Crash here 3\n");
if (trials==0 && round==0)
printf("RE count %d\n",re_allocated);
if (num_layers>1)
re_allocated = dlsch_modulation(PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
1024,
subframe,
&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][1]);
} //n_users
// printf("Did not Crash here 4\n");
generate_pilots(PHY_vars_eNB,
PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
1024,
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*nsymb*10,1,4);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx>1)
write_output("txsigF1.m","txsF1", PHY_vars_eNB->lte_eNB_common_vars.txdataF[0][1],300*nsymb*10,1,4);
}
// do table 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++)
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);
}
if (n_frames==1) {
write_output("txsigF20.m","txsF20", txdataF2[0], FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,1,1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx>1)
write_output("txsigF21.m","txsF21", txdataF2[1], FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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(&txdataF2[aa][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size], // input
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti], // 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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size],
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
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],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size], // input
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti], // 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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size],
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
2*nsymb,
frame_parms);
}
tx_lev += signal_energy(&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
PHY_vars_eNB->lte_frame_parms.samples_per_tti);
}
#endif //IFFT_FPGA
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
//printf("tx_lev = %d (%d dB)\n",tx_lev,tx_lev_dB);
if (n_frames==1)
write_output("txsig0.m","txs0", txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
} else { // Read signal from file
i=0;
while (!feof(input_fd)) {
fscanf(input_fd,"%s %s",input_val_str,input_val_str2);
if ((i%4)==0) {
((short*)txdata[0])[i/2] = (short)((1<<15)*strtod(input_val_str,NULL));
((short*)txdata[0])[(i/2)+1] = (short)((1<<15)*strtod(input_val_str2,NULL));
if ((i/4)<100)
printf("sample %d => %e + j%e (%d +j%d)\n",i/4,strtod(input_val_str,NULL),strtod(input_val_str2,NULL),((short*)txdata[0])[i/4],((short*)txdata[0])[(i/4)+1]);//1,input_val2,);
}
i++;
if (i>(FRAME_LENGTH_SAMPLES))
break;
}
printf("Read in %d samples\n",i/4);
write_output("txsig0.m","txs0", txdata[0],2*frame_parms->samples_per_tti,1,1);
// write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
tx_lev = signal_energy(&txdata[0][0], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
}
// printf("Copying tx ..., nsymb %d (n_tx %d), awgn %d\n", nsymb, PHY_vars_eNB->lte_frame_parms.nb_antennas_tx, awgn_flag);
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]))[(2*subframe*PHY_vars_UE[0]->lte_frame_parms.samples_per_tti) + (i<<1)]); /* I put '0' by default, but this should be checked!!! */
s_im[aa][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[0]->lte_frame_parms.samples_per_tti) +(i<<1)+1]); /* I put '0' by default, but this should be checked!!! */
} else {
for (j=0; j<num_relay; j++) {
for (aarx=0; aarx<PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx; aarx++) {
if (aa==0) {
r_re[j][aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)]);
r_im[j][aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)+1]);
} else {
r_re[j][aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)]); // even samples;
r_im[j][aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)+1]); // odd samples;
}
}
}
}
}
}
// n0_pow_dB = tx_lev_dB + 10*log10(512/(NB_RB*12)) + SNR;
// generate new channel if pmi_feedback==0, otherwise hold channel
for (j=0; j<num_relay; j++) {
if(abstx) {
if (trials==0 && round==0) {
if (awgn_flag == 0) {
if(SNR==snr0) {
if(pmi_feedback==0)
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
else
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
} else {
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
}
freq_channel(eNB2UE[j], 25,51);
snr=pow(10.0,.1*SNR);
fprintf(csv_fd,"%f,",SNR);
for (u=0; u<50; u++) {
abs_channel = (eNB2UE[j]->chF[0][u].x*eNB2UE[j]->chF[0][u].x + eNB2UE[j]->chF[0][u].y*eNB2UE[j]->chF[0][u].y);
if(transmission_mode==5) {
fprintf(csv_fd,"%e,",abs_channel);
} else {
pilot_sinr = 10*log10(snr*abs_channel);
fprintf(csv_fd,"%e,",pilot_sinr);
}
}
}
} else {
if (awgn_flag == 0) {
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j], r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
}
}
} else { //ABStraction
if (awgn_flag == 0) {
if (pmi_feedback==0)
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
else
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
}
}//ABStraction
}
//(double)tx_lev_dB - (SNR+sigma2_dB));
//printf("tx_lev_dB %d\n",tx_lev_dB);
sigma2_dB = 10*log10((double)tx_lev) +10*log10(PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size/(NB_RB*12)) - SNR;
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// n0_pow_dB = tx_lev_dB + 10*log10(512/(NB_RB*12)) + SNR;
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
if (pmi_feedback==0) {
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++) {
for (j=0; j<num_relay; j++) {
//printf("s_re[0][%d]=> %f , r_re[%d][0][%d]=> %f\n",i,s_re[aa][i],j,i,r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i] =
(short) (r_re[j][aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i+1] =
(short) (r_im[j][aa][i] + (iqim*r_re[j][aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
}
}
}
} else {
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++) {
for (j=0; j<num_relay; j++) {
// printf("s_re[0][%d]=> %f , r_re[%d][0][%d]=> %f\n",i,s_re[aa][i],j,i,r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i] = (short) (r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i+1] = (short) (r_im[j][aa][i]);
}
}
}
}
// 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) {
for (j=0; j<num_relay; j++) {
printf("RX level at %d-th RN in null symbol %d\n", j,
dB_fixed(signal_energy(&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][160+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("RX level at %d-th RN in data symbol %d\n", j,
dB_fixed(signal_energy(&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][160+(2*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES)], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("rx_level at %d-th RN in null symbol %f\n", j,
10*log10(signal_energy_fp(r_re[j],r_im[j],1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2,256+(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES))));
printf("rx_level at %d-th RN in data symbol %f\n", j,
10*log10(signal_energy_fp(r_re[j],r_im[j],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;
}
i_mod = get_Qm(mcs);
/* Once, at one of the RN, the DLSCH pkt has been decoded, then we continue with the following trial! */
/* Declare an error iff all RNs fail to decode! */
for (j=0; j<num_relay; j++) { // loop over all RNs;
// Inner receiver scheduling for 3 slots
for (Ns=(2*subframe); Ns<((2*subframe)+3); Ns++) {
for (l=0; l<pilot2; l++) {
if (n_frames==1)
printf("Ns %d, l %d\n",Ns,l);
/*
This function implements the OFDM front end processor (FEP).
parameters:
frame_parms LTE DL Frame Parameters
ue_common_vars LTE UE Common Vars
l symbol within slot (0..6/7)
Ns Slot number (0..19)
sample_offset offset within rxdata (points to beginning of subframe)
no_prefix if 1 prefix is removed by HW
*/
slot_fep(PHY_vars_UE[j], l, Ns%20, 0, 0);
#ifdef PERFECT_CE
if (awgn_flag==0) {
// fill in perfect channel estimates
freq_channel(eNB2UE[j],PHY_vars_UE[j]->lte_frame_parms.N_RB_DL,301);
//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);
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 *) PHY_vars_UE[j]->lte_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[j]->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].x*AMP/2);
((int16_t *) PHY_vars_UE[j]->lte_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[j]->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].y*AMP/2) ;
}
}
}
}
} else {
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 *) PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[0][(aa<<1)+aarx])[2*i+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=AMP/2;
((int16_t *) PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[0][(aa<<1)+aarx])[2*i+1+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=0/2;
}
}
}
}
#endif
if ((Ns==(2+(2*subframe))) && (l==0)) {
lte_ue_measurements(PHY_vars_UE[j], subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 0);
/*
debug_msg("RX RSSI %d dBm, digital (%d, %d) dB, linear (%d, %d), avg rx power %d dB (%d lin), RX gain %d dB\n",
PHY_vars_UE[j]->PHY_measurements.rx_rssi_dBm[0] - ((PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx==2) ? 3 : 0),
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_dB[0][0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_dB[0][1],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi[0][0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi[0][1],
PHY_vars_UE[j]->PHY_measurements.rx_power_avg_dB[0],
PHY_vars_UE[j]->PHY_measurements.rx_power_avg[0],
PHY_vars_UE[j]->rx_total_gain_dB);
debug_msg("N0 %d dBm digital (%d, %d) dB, linear (%d, %d), avg noise power %d dB (%d lin)\n",
PHY_vars_UE[j]->PHY_measurements.n0_power_tot_dBm,
PHY_vars_UE[j]->PHY_measurements.n0_power_dB[0],
PHY_vars_UE[j]->PHY_measurements.n0_power_dB[1],
PHY_vars_UE[j]->PHY_measurements.n0_power[0],
PHY_vars_UE[j]->PHY_measurements.n0_power[1],
PHY_vars_UE[j]->PHY_measurements.n0_power_avg_dB,
PHY_vars_UE[j]->PHY_measurements.n0_power_avg);
debug_msg("Wideband CQI tot %d dB, wideband cqi avg %d dB\n",
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_tot[0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_avg[0]);
*/
if (transmission_mode==5 || transmission_mode==6) {
if (pmi_feedback==1) {
pmi_feedback= 0;
// printf("measured PMI %x\n",pmi2hex_2Ar1(quantize_subband_pmi(&PHY_vars_UE[j]->PHY_measurements,0)));
goto PMI_FEEDBACK;
}
}
}
if ((Ns==(2*subframe)) && (l==pilot1)) { // process symbols 0,1,2
if (dci_flag == 1) {
rx_pdcch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
subframe,
0,
(PHY_vars_UE[j]->lte_frame_parms.mode1_flag == 1) ? SISO : ALAMOUTI,
0);
// overwrite number of pdcch symbols
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
dci_cnt = dci_decoding_procedure(PHY_vars_UE[j],
dci_alloc_rx[j],
eNB_id,
subframe,
SI_RNTI,
RA_RNTI);
//printf("dci_cnt %d\n",dci_cnt);
if (dci_cnt==0) {
dlsch_active = 0;
if (round==0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (num_relay-1)) {
dci_errors++;
error_tot[0]++; // errs[0] is replaced by error_tot[0];
round_trials[0]++;
round = 5;
//printf("DCI error trial %d error_tot[0] %d\n",trials,error_tot[0]);
}
//dci_errors++;
//round=5;
//error_tot[0]++;
//round_trials[0]++;
// printf("DCI error trial %d error_tot[0] %d\n",trials, error_tot[0]);
}
// for (i=1;i<=round;i++)
// round_trials[i]--;
// round=5;
}
for (i=0; i<dci_cnt; i++) {
//printf("Generating dlsch parameters for RNTI %x\n",dci_alloc_rx[j][i].rnti);
if ((dci_alloc_rx[j][i].rnti == n_rnti) &&
(generate_ue_dlsch_params_from_dci(0,
dci_alloc_rx[j][i].dci_pdu,
dci_alloc_rx[j][i].rnti,
dci_alloc_rx[j][i].format,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI) == 0)) {
//dump_dci(&PHY_vars_UE[j]->lte_frame_parms,&dci_alloc_rx[j][i]);
coded_bits_per_codeword = get_G(&PHY_vars_eNB->lte_frame_parms,
PHY_vars_UE[j]->dlsch_ue[0][0]->nb_rb,
PHY_vars_UE[j]->dlsch_ue[0][0]->rb_alloc,
get_Qm(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs),
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols,
subframe);
/*
rate = (double)dlsch_tbs25[get_I_TBS(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs)][PHY_vars_UE[j]->dlsch_ue[0][0]->nb_rb-1]/(coded_bits_per_codeword);
rate*=get_Qm(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs);
printf("num_pdcch_symbols %d, G %d, TBS %d\n", PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols, coded_bits_per_codeword, PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->TBS);
*/
dlsch_active = 1;
} else {
dlsch_active = 0;
if (round==0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (num_relay-1)) {
dci_errors++;
error_tot[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;
}
}
} // if dci_flag==1
else { //dci_flag == 0
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->crnti = n_rnti;
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
generate_ue_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2_2D[0],
C_RNTI,
format2_2D_M10PRB,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI);
dlsch_active = 1;
} // if dci_flag == 1
}
if (dlsch_active == 1) {
if ((Ns==(1+(2*subframe))) && (l==0)) { // process symbols 3,4,5
for (m=PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols; m<pilot2; m++) {
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
(m==PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols)?1:0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
}
}
if ((Ns==(1+(2*subframe))) && (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[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
}
if ((Ns==(2+(2*subframe))) && (l==0)) // process symbols 10,11, do deinterleaving for TTI
for (m=pilot3; m<PHY_vars_UE[j]->lte_frame_parms.symbols_per_tti; m++)
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
if ((n_frames==1) && (Ns==(2+(2*subframe))) && (l==0)) {
write_output("ch0.m", "ch0",
eNB2UE[j]->ch[0],
eNB2UE[j]->channel_length, 1, 8);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("ch1.m", "ch1",
eNB2UE[j]->ch[PHY_vars_eNB->lte_frame_parms.nb_antennas_rx],
eNB2UE[j]->channel_length, 1, 8);
//common vars
write_output("rxsig0.m", "rxs0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][0],
10*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF0.m", "rxsF0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[0][0],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) {
write_output("rxsig1.m","rxs1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdata[1],
PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF1.m","rxsF1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[1],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
}
write_output("dlsch00_ch0.m", "dl00_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][0][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1)
write_output("dlsch01_ch0.m", "dl01_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][1][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("dlsch10_ch0.m", "dl10_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][2][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if ((PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) && (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1))
write_output("dlsch11_ch0.m","dl11_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][3][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
//dlsch_vars
dump_dlsch2(PHY_vars_UE[j], eNB_id, coded_bits_per_codeword);
dump_dlsch2(PHY_vars_UE[j], eNB_id_i, coded_bits_per_codeword);
write_output("dlsch_e.m", "e",
PHY_vars_eNB->dlsch_eNB[0][0]->e,
coded_bits_per_codeword, 1, 4);
//pdcch_vars
write_output("pdcchF0_ext.m", "pdcchF_ext",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->rxdataF_ext[0],
2*3*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size, 1, 1);
write_output("pdcch00_ch0_ext.m", "pdcch00_ch0_ext",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->dl_ch_estimates_ext[0],
300*3, 1, 1);
write_output("pdcch_rxF_comp0.m", "pdcch0_rxF_comp0",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->rxdataF_comp[0],
4*300, 1, 1);
write_output("pdcch_rxF_llr.m", "pdcch_llr",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->llr,
2400, 1, 4);
}
} // if "dlsch_active = 1";
} // loop over l;
} // loop over Ns;
// calculate uncoded BLER
uncoded_ber=0;
for (i=0; i<coded_bits_per_codeword; i++)
if (PHY_vars_eNB->dlsch_eNB[0][0]->e[i] != (PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0][i] < 0)) {
uncoded_ber_bit[i] = 1;
uncoded_ber++;
} else
uncoded_ber_bit[i] = 0;
uncoded_ber /= coded_bits_per_codeword;
avg_ber += uncoded_ber;
//imran
if(abstx) {
if (trials<10 && round==0 && transmission_mode==5) {
for (iii=0; iii<NB_RB; iii++) {
//fprintf(csv_fd, "%d, %d", (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->pmi_ext[iii]),
// (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id_i]->pmi_ext[iii]));
msg(" %x", (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->pmi_ext[iii]));
// msg("Opposite Extracted pmi %x\n",(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id_i]->pmi_ext[iii]));
}
}
}
/*
printf("precoded CQI %d dB, opposite precoded CQI %d dB\n",
PHY_vars_UE[j]->PHY_measurements.precoded_cqi_dB[eNB_id][0],
PHY_vars_UE[j]->PHY_measurements.precoded_cqi_dB[eNB_id_i][0]);
*/
PHY_vars_UE[j]->dlsch_ue[0][0]->rnti = n_rnti;
dlsch_unscrambling(&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols,
PHY_vars_UE[j]->dlsch_ue[0][0],
coded_bits_per_codeword,
PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0],
0,
subframe<<1);
/*
for (i=0; i<coded_bits_per_codeword; i++)
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0][i] = (short)quantize(100, PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0][i], 4);
*/
ret = dlsch_decoding(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0],
&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->dlsch_ue[0][0],
subframe,
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols);
#ifdef XFORMS
do_forms(form,
&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates_time,
PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id],
PHY_vars_UE[j]->lte_ue_common_vars.rxdata,
PHY_vars_UE[j]->lte_ue_common_vars.rxdataF,
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->rxdataF_comp[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[3]->rxdataF_comp[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->dl_ch_rho_ext[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0],coded_bits_per_codeword);
//PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->w[0], 3*(tbs+64));
//uncoded_ber_bit, coded_bits_per_codeword);
/*
printf("Hit a key to continue\n");
c = getchar();
*/
#endif
if (ret <= MAX_TURBO_ITERATIONS) {
if (n_frames == 1)
printf("No DLSCH errors found\n");
// exit(-1);
if (fix_rounds == 0) { // # of HARQ rounds; by default it is '4' and 'fix_rounds=0';
round=5; // one of the RNs has successfully decoded the messages;
break; // no need to wait for the other RNs to decode! (For time saving!!)
} else
round++; // why not as 'round = num_rounds' -> what does it bring if we retransmit a decoded data?!!!;
} else {
//err_total[round]++;
if (n_frames == 1) {
//if ((n_frames==1) || (SNR>=30)) {
printf("DLSCH errors found, uncoded ber %f\n", uncoded_ber);
for (s=0; s<PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->C; s++) {
if (s < PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_UE[j]->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[j]->dlsch_ue[0][0]->harq_processes[0]->c[s][i],
PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->c[s][i]^PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->c[s][i]);
}
write_output("rxsig0.m","rxs0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][0],
10*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF0.m","rxsF0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[0][0],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) {
write_output("rxsig1.m","rxs1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdata[1],
PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF1.m","rxsF1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[1],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
}
write_output("dlsch00_ch0.m","dl00_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][0][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1)
write_output("dlsch01_ch0.m","dl01_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][1][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("dlsch10_ch0.m","dl10_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][2][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if ((PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) && (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1))
write_output("dlsch11_ch0.m","dl11_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][3][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
//dlsch_vars
dump_dlsch2(PHY_vars_UE[j], eNB_id, coded_bits_per_codeword);
write_output("dlsch_e.m","e", PHY_vars_eNB->dlsch_eNB[0][0]->e, coded_bits_per_codeword, 1, 4);
write_output("dlsch_ber_bit.m","ber_bit", uncoded_ber_bit, coded_bits_per_codeword, 1, 0);
write_output("dlsch_eNB_w.m","w", PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->w[0], 3*(tbs+64), 1, 4);
write_output("dlsch_UE_w.m","w", PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->w[0], 3*(tbs+64), 1, 0);
exit(-1);
}
if (j == (num_relay-1)) {
error_tot[round]++;
// printf("round %d errors %d/%d\n", round, error_tot[round], trials);
round++;
if (n_frames == 1)
printf("DLSCH in error in round %d\n", round);
}
}
} //number of relays
} //round
// printf("\n");
if ((error_tot[0]>=100) && (trials>(n_frames/2)))
break;
//len = chbch_stats_read(stats_buffer,NULL,0,4096);
//printf("%s\n\n",stats_buffer);
} //trials
for (j=0; j<num_relay; j++) {
printf("\n**********************Relay Node %j: SNR = %f dB (tx_lev %f, sigma2_dB %f)**************************\n",
j,
SNR,
(double)tx_lev_dB+10*log10(PHY_vars_UE[j]->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), uncoded_ber %f\n",
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
(double)error_tot[0]/(round_trials[0]),
(double)error_tot[1]/(round_trials[1]),
(double)error_tot[2]/(round_trials[2]),
(double)error_tot[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]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[3]))/((double)round_trials[0])/
(double)PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->TBS,
(1.0*(round_trials[0]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[3]))/((double)round_trials[0]),
avg_ber/round_trials[0]);
fprintf(bler_fd,"%f \t %d \t %d \t %d \t %f \t %f \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %f;\n",
SNR,
mcs,
num_relay,
PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->TBS,
rate*((double)(round_trials[0]-dci_errors)/((double)round_trials[0] + round_trials[1] + round_trials[2] + round_trials[3])), //effective rate
rate,
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
dci_errors,
avg_ber/round_trials[0]);
fprintf(tikz_fd,"(%f,%f)", SNR, (float)error_tot[0]/round_trials[0]);
if(abstx) { //ABSTRACTION
blerr= (double)error_tot[0]/(round_trials[0]);
fprintf(csv_fd,"%e;\n", blerr);
} //ABStraction
if (((double)error_tot[0]/(round_trials[0]))<1e-5)
break;
}// SNR
} //ch_realization
fclose(bler_fd);
fprintf(tikz_fd,"};\n");
fclose(tikz_fd);
if (input_trch_file==1)
fclose(input_trch_fd);
if (input_file==1)
fclose(input_fd);
if(abstx) { // ABSTRACTION
fprintf(csv_fd,"];");
fclose(csv_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);
for (j=0; j<num_relay; j++) {
free_ue_dlsch(PHY_vars_UE[j]->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]);
}
for (j=0; j<num_relay; j++) {
for (i=0; i<2; i++) {
free(r_re[j][i]);
free(r_im[j][i]);
}
free(r_re[j]);
free(r_im[j]);
free(eNB2UE[j]);
free(dci_alloc_rx[j]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
free(eNB2UE);
free(dci_alloc_rx);
// lte_sync_time_free();
return(0);
}
openair1/SIMULATION/LTE_RELAY/relay_QF_sim.c deleted 100644 → 0
View file @ 350ee35d
/*******************************************************************************
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, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <execinfo.h>
#include <signal.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"
#include "LAYER2/MAC/vars.h"
#include "OCG_vars.h"
#ifdef XFORMS
#include "forms.h"
#include "../../USERSPACE_TOOLS/SCOPE/lte_scope.h"
#endif
//#define AWGN
//#define NO_DCI
#define BW 7.68
/*
#define RBmask0 0x00fc00fc
#define RBmask1 0x0
#define RBmask2 0x0
#define RBmask3 0x0
*/
PHY_VARS_eNB *PHY_vars_eNB;
PHY_VARS_UE **PHY_vars_UE; // this variable is modified to enable multiple relay nodes (# Relay Node = "num_relay");
void handler(int sig)
{
void *array[10];
size_t size;
/* get void*'s for all entries on the stack */
size = backtrace(array, 10);
/* print out all the frames to stderr*/
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, 2);
exit(1);
}
#ifdef XFORMS
void do_forms(FD_lte_scope *form, LTE_DL_FRAME_PARMS *frame_parms, short **channel, short **channel_f, short **rx_sig, short **rx_sig_f, short *dlsch_comp, short* dlsch_comp_i, short* dlsch_rho,
short *dlsch_llr, int coded_bits_per_codeword)
{
int i, j, ind, k, s;
float Re, Im;
float mag_sig[NB_ANTENNAS_RX*4*NUMBER_OF_OFDM_CARRIERS*NUMBER_OF_OFDM_SYMBOLS_PER_SLOT];
float sig_time[NB_ANTENNAS_RX*4*NUMBER_OF_OFDM_CARRIERS*NUMBER_OF_OFDM_SYMBOLS_PER_SLOT];
float sig2[FRAME_LENGTH_COMPLEX_SAMPLES], time2[FRAME_LENGTH_COMPLEX_SAMPLES], I[25*12*11*4], Q[25*12*11*4], *llr, *llr_time;
float avg, cum_avg;
llr = malloc(coded_bits_per_codeword*sizeof(float));
llr_time = malloc(coded_bits_per_codeword*sizeof(float));
// Channel frequency response
cum_avg = 0;
ind = 0;
for (j=0; j<4; j++) {
for (i=0; i<frame_parms->nb_antennas_rx; i++) {
for (k=0; k<NUMBER_OF_OFDM_CARRIERS*7; k++) {
sig_time[ind] = (float)ind;
Re = (float)(channel_f[(j<<1)+i][2*k]);
Im = (float)(channel_f[(j<<1)+i][2*k+1]);
//mag_sig[ind] = (short) rand();
mag_sig[ind] = (short)10*log10(1.0+((double)Re*Re + (double)Im*Im));
cum_avg += (short)sqrt((double)Re*Re + (double)Im*Im) ;
ind++;
}
// ind += NUMBER_OF_OFDM_CARRIERS/4; // spacing for visualization
}
}
avg = cum_avg/NUMBER_OF_USEFUL_CARRIERS;
//fl_set_xyplot_ybounds(form->channel_f,30,70);
fl_set_xyplot_data(form->channel_f,sig_time,mag_sig,ind,"","","");
/*
// channel time resonse
cum_avg = 0;
ind = 0;
for (k=0; k<1; k++){
for (j=0; j<1; j++) {
for (i=0; i<frame_parms->ofdm_symbol_size; i++){
sig_time[ind] = (float)ind;
Re = (float)(channel[k+2*j][2*i]);
Im = (float)(channel[k+2*j][2*i+1]);
//mag_sig[ind] = (short) rand();
mag_sig[ind] = (short)10*log10(1.0+((double)Re*Re + (double)Im*Im));
cum_avg += (short)sqrt((double)Re*Re + (double)Im*Im) ;
ind++;
}
}
}
//fl_set_xyplot_ybounds(form->channel_t_im,10,90);
fl_set_xyplot_data(form->channel_t_im,sig_time,mag_sig,ind,"","","");
*/
// channel_t_re = rx_sig_f[0]
//for (i=0; i<FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX; i++) {
for (i=0; i<NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti/2; i++) {
sig2[i] = 10*log10(1.0+(double) ((rx_sig_f[0][4*i])*(rx_sig_f[0][4*i])+(rx_sig_f[0][4*i+1])*(rx_sig_f[0][4*i+1])));
time2[i] = (float) i;
}
//fl_set_xyplot_ybounds(form->channel_t_re,10,90);
fl_set_xyplot_data(form->channel_t_re,time2,sig2,NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti,"","","");
//fl_set_xyplot_data(form->channel_t_re,time2,sig2,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,"","","");
// channel_t_im = rx_sig[0]
//if (frame_parms->nb_antennas_rx>1) {
for (i=0; i<FRAME_LENGTH_COMPLEX_SAMPLES; i++) {
//for (i=0; i<NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti/2; i++) {
sig2[i] = 10*log10(1.0+(double) ((rx_sig[0][2*i])*(rx_sig[0][2*i])+(rx_sig[0][2*i+1])*(rx_sig[0][2*i+1])));
time2[i] = (float) i;
}
//fl_set_xyplot_ybounds(form->channel_t_im,0,100);
//fl_set_xyplot_data(form->channel_t_im,&time2[640*12*6],&sig2[640*12*6],640*12,"","","");
fl_set_xyplot_data(form->channel_t_im,time2,sig2,FRAME_LENGTH_COMPLEX_SAMPLES,"","","");
//}
/*
// PBCH LLR
j=0;
for(i=0;i<1920;i++) {
llr[j] = (float) pbch_llr[i];
llr_time[j] = (float) j;
//if (i==63)
// i=127;
//else if (i==191)
// i=319;
j++;
}
fl_set_xyplot_data(form->decoder_input,llr_time,llr,1920,"","","");
//fl_set_xyplot_ybounds(form->decoder_input,-100,100);
// PBCH I/Q
j=0;
for(i=0;i<12*12;i++) {
I[j] = pbch_comp[2*i];
Q[j] = pbch_comp[2*i+1];
j++;
//if (i==47)
// i=96;
//else if (i==191)
// i=239;
}
fl_set_xyplot_data(form->scatter_plot,I,Q,12*12,"","","");
//fl_set_xyplot_xbounds(form->scatter_plot,-100,100);
//fl_set_xyplot_ybounds(form->scatter_plot,-100,100);
// PDCCH I/Q
j=0;
for(i=0;i<12*25*3;i++) {
I[j] = pdcch_comp[2*i];
Q[j] = pdcch_comp[2*i+1];
j++;
//if (i==47)
// i=96;
//else if (i==191)
// i=239;
}
fl_set_xyplot_data(form->scatter_plot1,I,Q,12*25*3,"","","");
//fl_set_xyplot_xbounds(form->scatter_plot,-100,100);
//fl_set_xyplot_ybounds(form->scatter_plot,-100,100);
*/
// DLSCH LLR
for(i=0; i<coded_bits_per_codeword; i++) {
llr[i] = (float) dlsch_llr[i];
llr_time[i] = (float) i;
}
fl_set_xyplot_data(form->demod_out, llr_time, llr, coded_bits_per_codeword, "", "", "");
fl_set_xyplot_ybounds(form->demod_out, -1000, 1000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_comp[(2*25*12*s)+2*i];
Q[j] = dlsch_comp[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot, I, Q, j, "", "", "");
fl_set_xyplot_xbounds(form->scatter_plot, -2000, 2000);
fl_set_xyplot_ybounds(form->scatter_plot, -2000, 2000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_comp_i[(2*25*12*s)+2*i];
Q[j] = dlsch_comp_i[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot1, I, Q, j, "", "", "");
fl_set_xyplot_xbounds(form->scatter_plot1, -2000, 2000);
fl_set_xyplot_ybounds(form->scatter_plot1, -2000, 2000);
// DLSCH I/Q
j=0;
for (s=0; s<frame_parms->symbols_per_tti; s++) {
for(i=0; i<12*25; i++) {
I[j] = dlsch_rho[(2*25*12*s)+2*i];
Q[j] = dlsch_rho[(2*25*12*s)+2*i+1];
j++;
}
//if (s==2)
// s=3;
//else if (s==5)
// s=6;
//else if (s==8)
// s=9;
}
fl_set_xyplot_data(form->scatter_plot2, I, Q, j, "", "", "");
//fl_set_xyplot_xbounds(form->scatter_plot2,-1000,1000);
//fl_set_xyplot_ybounds(form->scatter_plot2,-1000,1000);
free(llr);
free(llr_time);
}
#endif
// In the following function the first parameter ("unsigned char num_relay") is added for # RN in the Parallel Relay Network (PRN);
void lte_param_init(unsigned char num_relay, unsigned char N_tx, unsigned char N_rx, unsigned char transmission_mode, uint8_t extended_prefix_flag, uint16_t Nid_cell, uint8_t tdd_config,
uint8_t N_RB_DL, uint8_t osf)
{
LTE_DL_FRAME_PARMS *lte_frame_parms;
int i;
unsigned int j;
printf("Start lte_param_init\n");
PHY_vars_eNB = (PHY_VARS_eNB *)malloc(sizeof(PHY_VARS_eNB));
//PHY_vars_UE = malloc(sizeof(PHY_VARS_UE));
PHY_vars_UE = (PHY_VARS_UE **)malloc(num_relay * sizeof(PHY_VARS_UE *));
if (!(PHY_vars_eNB && PHY_vars_UE)) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j] = (PHY_VARS_UE *)malloc(sizeof(PHY_VARS_UE));
if (!(PHY_vars_UE[j])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
//PHY_config = (PHY_CONFIG *)malloc(sizeof(PHY_CONFIG));
mac_xface = (MAC_xface *)malloc(sizeof(MAC_xface));
if (mac_xface == NULL) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
randominit(0);
set_taus_seed(0);
lte_frame_parms = &(PHY_vars_eNB->lte_frame_parms);
lte_frame_parms->N_RB_DL = N_RB_DL; //50 for 10MHz and 25 for 5 MHz
lte_frame_parms->N_RB_UL = N_RB_DL;
lte_frame_parms->Ncp = extended_prefix_flag;
lte_frame_parms->Nid_cell = Nid_cell;
lte_frame_parms->nushift = 0;
lte_frame_parms->nb_antennas_tx = N_tx;
lte_frame_parms->nb_antennas_rx = N_rx;
lte_frame_parms->phich_config_common.phich_resource = oneSixth;
lte_frame_parms->tdd_config = tdd_config;
lte_frame_parms->frame_type = 1;
// lte_frame_parms->Csrs = 2;
// lte_frame_parms->Bsrs = 0;
// lte_frame_parms->kTC = 0;44
// lte_frame_parms->n_RRC = 0;
lte_frame_parms->mode1_flag = (transmission_mode == 1) ? 1 : 0;
init_frame_parms(lte_frame_parms,osf);
//copy_lte_parms_to_phy_framing(lte_frame_parms, &(PHY_config->PHY_framing));
phy_init_top(lte_frame_parms); //allocation
lte_frame_parms->twiddle_fft = twiddle_fft;
lte_frame_parms->twiddle_ifft = twiddle_ifft;
lte_frame_parms->rev = rev;
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->is_secondary_ue = 0;
PHY_vars_UE[j]->lte_frame_parms = *lte_frame_parms;
}
//PHY_vars_UE->is_secondary_ue = 0;
//PHY_vars_UE->lte_frame_parms = *lte_frame_parms;
PHY_vars_eNB->lte_frame_parms = *lte_frame_parms;
phy_init_lte_top(lte_frame_parms);
dump_frame_parms(lte_frame_parms);
for (i=0; i<3; i++)
for(j=0; j<num_relay; j++) {
lte_gold(lte_frame_parms, PHY_vars_UE[j]->lte_gold_table[i], i);
}
for(j=0; j<num_relay; j++) {
phy_init_lte_ue(&PHY_vars_UE[j]->lte_frame_parms,
&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars_SI,
PHY_vars_UE[j]->lte_ue_dlsch_vars_ra,
PHY_vars_UE[j]->lte_ue_pbch_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
PHY_vars_UE[j],
0);
}
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,
1,
0);
printf("Done lte_param_init\n");
}
//DCI2_5MHz_2A_M10PRB_TDD_t DLSCH_alloc_pdu2_2A[2];
DCI2_5MHz_2D_M10PRB_TDD_t DLSCH_alloc_pdu2_2D[2];
#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 0x1fff // all 25 RBs
//#define DLSCH_RB_ALLOC 0x0001
int main(int argc, char **argv)
{
char c;
int k, i, j, aa, aarx;
int s, Kr, Kr_bytes;
double sigma2, sigma2_dB = 10, SNR, snr0 = -2.0, snr1, rate;
double snr_step = 1, snr_int = 20;
//int **txdataF, **txdata;
int **txdata;
#ifdef IFFT_FPGA
int **txdataF2;
int ind;
#endif
LTE_DL_FRAME_PARMS *frame_parms;
double **s_re, **s_im;
double ***r_re, ***r_im; // 3-D received signal matrices in the form of r_re[# of RN][][], r_im[# of RN][][];
double forgetting_factor = 0.0; // in [0,1] 0 means a new channel every time, 1 means keep the same channel
double hold_channel = 0; // use hold_channel=1 instead of forgetting_factor=1 (more efficient)
double iqim = 0.0;
uint8_t extended_prefix_flag=0, transmission_mode=1, n_tx=1, n_rx=1;
uint16_t Nid_cell=0;
int eNB_id = 0, eNB_id_i = NUMBER_OF_eNB_MAX;
unsigned char mcs, dual_stream_UE = 0;
unsigned char awgn_flag = 0, round, dci_flag = 0;
unsigned char i_mod = 2;
unsigned short NB_RB = conv_nprb(0, DLSCH_RB_ALLOC);
unsigned char Ns, l, m;
uint16_t tdd_config = 3;
uint16_t n_rnti = 0x1234;
int n_users = 1; // if we select 'n_users = # of RN', would it be possible to simulate PRN setup?
SCM_t channel_model = Rayleigh1_corr;
// unsigned char *input_data, *decoded_output;
unsigned char *input_buffer[2];
unsigned short input_buffer_length;
unsigned int ret;
unsigned int coded_bits_per_codeword, nsymb, dci_cnt, tbs;
unsigned int tx_lev, tx_lev_dB, trials, error_tot[4]= {0}, round_trials[4]= {0}, dci_errors=0, dlsch_active=0, num_layers;
int re_allocated;
FILE *bler_fd;
char bler_fname[256];
FILE *tikz_fd;
char tikz_fname[256];
FILE *input_trch_fd;
unsigned char input_trch_file=0;
FILE *input_fd=NULL;
unsigned char input_file=0;
char input_val_str[50], input_val_str2[50];
char input_trch_val[16];
double pilot_sinr, abs_channel;
// unsigned char pbch_pdu[6];
DCI_ALLOC_t dci_alloc[8];
//DCI_ALLOC_t dci_alloc_rx[8];
DCI_ALLOC_t **dci_alloc_rx; // where 1st dimension of "dci_alloc_rx" will hold "# of RNs (UEs)" in the system;
int num_common_dci=0, num_ue_spec_dci=0, num_dci=0;
// FILE *rx_frame_file;
int n_frames;
int n_ch_rlz = 1;
channel_desc_t **eNB2UE; // which is a pointer array whose size will be the "# of RNs (UEs)" in the system;
double snr;
uint8_t num_pdcch_symbols=3, num_pdcch_symbols_2=0;
uint8_t pilot1, pilot2, pilot3;
uint8_t rx_sample_offset = 0;
//char stats_buffer[4096];
//int len;
uint8_t num_rounds=4,fix_rounds=0;
uint8_t subframe=6;
int u;
int abstx=0;
int iii;
FILE *csv_fd;
char csv_fname[20];
int ch_realization;
int pmi_feedback=0;
// void *data;
// int ii;
// int bler;
double blerr, uncoded_ber, avg_ber;
short *uncoded_ber_bit;
uint8_t N_RB_DL = 25, osf = 1;
int16_t amp;
/* Variables related to Quantization */
unsigned int num_relay;
unsigned short backhaulCapacity; // backhaulCapacity --> this will be used when asymmetric capacities are used; // to hold backhaul capacities;
unsigned short backhaulBitsPerLLR; // backhaul bits per LLR --> In order to have fair comparison between different modulation alphabet sizes;
unsigned int Mlevel; // = 2^{backhaulCapacity} -> number of quantization levels at each RNs;
short **llr_quant;
short *llr_quant_sum;
#ifdef XFORMS
FD_lte_scope *form;
char title[255];
#endif
signal(SIGSEGV, handler);
// default parameters
mcs = 0;
n_frames = 1000;
snr0 = 0;
num_layers = 1;
num_relay = 1;
backhaulBitsPerLLR = 2; // since 'llr' values are short variables, it is 16 bits;
while ((c = getopt(argc, argv, "hadpm:n:o:s:f:t:c:g:r:F:x:y:z:M:N:I:i:R:S:C:T:b:u:J:L:")) != -1) {
switch (c) {
case 'a':
awgn_flag = 1;
break;
case 'b':
tdd_config=atoi(optarg);
break;
case 'd':
dci_flag = 1;
break;
case 'm':
mcs = atoi(optarg);
break;
case 'n':
n_frames = atoi(optarg);
break;
case 'C':
Nid_cell = atoi(optarg);
break;
case 'o':
rx_sample_offset = 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);
}
*/
printf("Please use the -G option to select the channel model\n");
exit(-1);
break;
case 'F':
forgetting_factor = atof(optarg);
break;
case 's':
snr0 = atoi(optarg);
break;
case 't':
//Td= atof(optarg);
printf("Please use the -G option to select the channel model\n");
exit(-1);
break;
case 'f':
snr_step= atof(optarg);
break;
case 'M':
abstx= atof(optarg);
break;
case 'N':
n_ch_rlz= atof(optarg);
break;
case 'p':
extended_prefix_flag=1;
break;
case 'c':
num_pdcch_symbols=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;
break;
case 'I':
channel_model=Rayleigh1;
break;
case 'J':
channel_model=Rayleigh1_corr;
break;
case 'K':
channel_model=Rayleigh1_anticorr;
break;
case 'L':
channel_model=Rice8;
break;
case 'M':
channel_model=Rice1;
break;
default:
msg("Unsupported channel model!\n");
exit(-1);
}
break;
case 'x':
transmission_mode = atoi(optarg);
if ((transmission_mode!=1) && (transmission_mode!=2) && (transmission_mode!=5) && (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 'I':
input_trch_fd = fopen(optarg,"r");
input_trch_file=1;
break;
case 'i':
input_fd = fopen(optarg,"r");
input_file = 1;
dci_flag = 1;
break;
case 'R':
num_rounds = atoi(optarg);
fix_rounds = 1;
break;
case 'S':
subframe = atoi(optarg);
break;
case 'T':
n_rnti = atoi(optarg);
break;
case 'u':
dual_stream_UE = atoi(optarg);
if ((n_tx!=2) || (transmission_mode!=5)) {
msg("Unsupported nb of decoded users: %d user(s), %d user(s) to decode\n", n_tx, dual_stream_UE);
exit(-1);
}
break;
case 'J':
num_relay = atoi(optarg);
if ((num_relay < 1) || (num_relay > 8)) {
msg("Unsupported number of Relay Nodes (RNs) in the PRN system %d\n", num_relay);
exit(-1);
}
break;
case 'L':
backhaulBitsPerLLR = atoi(optarg);
if (backhaulBitsPerLLR < 0) {
msg("Unsupported Backhaul Bits per LLR [bits/LLR] (from each RN to eNb) for quantization of 16-bit LLRs %d\n", backhaulBitsPerLLR);
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 (1,2,5,6) -y TXant -z RXant -I trch_file -J num_relay -L backhaulBitsPerLLR \n",
argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\n");
printf("-c Number of PDCCH symbols\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("-o Sample offset for receiver\n");
printf("-s Starting SNR, runs from SNR to SNR+%.1fdB in steps of %.1fdB. If n_frames is 1 then just SNR is simulated and MATLAB/OCTAVE output is generated\n", snr_int, snr_step);
printf("-f step size of SNR, default value is 1.\n");
printf("-t Delay spread for multipath channel\n");
printf("-r Ricean factor (dB, 0 dB = Rayleigh, 100 dB = almost AWGN)\n");
printf("-g [A:M] Use 3GPP 25.814 SCM-A/B/C/D('A','B','C','D') or 36-101 EPA('E'), EVA ('F'),ETU('G') models (ignores delay spread and Ricean factor), Rayghleigh8 ('H'), Rayleigh1('I'), Rayleigh1_corr('J'), Rayleigh1_anticorr ('K'), Rice8('L'), Rice1('M')\n");
printf("-F forgetting factor (0 new channel every trial, 1 channel constant\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("-R Number of HARQ rounds (fixed)\n");
printf("-M Determines whether the Absraction flag is on or Off. 1-->On and 0-->Off. Default status is Off. \n");
printf("-N Determines the number of Channel Realizations in Absraction mode. Default value is 1. \n");
printf("-I Input filename for TrCH data (binary)\n");
printf("-u Determines if the 2 streams at the UE are decoded or not. 0-->U2 is interference only and 1-->U2 is detected\n");
printf("-J Number of Relay Nodes (RNs) in the Parallel Relay Network (PRN)\n"); //= # UEs that are connected to the eNb via limited capacity backhaul;
printf("-L Backhaul Bits per LLR [bits/LLR] (from each RN to DeNB) for quantization of 16-bit LLRs\n");
exit(1);
break;
}
}
#ifdef XFORMS
fl_initialize(&argc, argv, NULL, 0, 0);
form = create_form_lte_scope();
sprintf(title, "LTE DLSIM SCOPE");
fl_show_form(form->lte_scope, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);
#endif
if (transmission_mode==5) {
n_users = 2;
printf("dual_stream_UE=%d\n", dual_stream_UE);
}
lte_param_init(num_relay, n_tx, n_rx, transmission_mode, extended_prefix_flag, Nid_cell, tdd_config, N_RB_DL, osf);
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, Extended Prefix %d\n", transmission_mode, n_tx, n_rx, extended_prefix_flag);
snr1 = snr0+snr_int;
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
printf("Channel Model=%d\n", channel_model);
printf("SCM-A=%d, SCM-B=%d, SCM-C=%d, SCM-D=%d, EPA=%d, EVA=%d, ETU=%d, Rayleigh8=%d, Rayleigh1=%d, Rayleigh1_corr=%d, Rayleigh1_anticorr=%d, Rice1=%d, Rice8=%d\n", SCM_A, SCM_B, SCM_C, SCM_D, EPA,
EVA, ETU, Rayleigh8, Rayleigh1, Rayleigh1_corr, Rayleigh1_anticorr, Rice1, Rice8);
//sprintf(bler_fname,"second_bler_tx%d_mcs%d_chan%d.csv", transmission_mode, mcs, channel_model);
//bler_fd = fopen(bler_fname,"w");
//fprintf(bler_fd,"SNR; MCS; TBS; rate; err0; trials0; err1; trials1; err2; trials2; err3; trials3; dci_err\n");
if(abstx) {
// CSV file
sprintf(csv_fname,"data_out%d.m", mcs);
csv_fd = fopen(csv_fname,"w");
fprintf(csv_fd,"data_all%d=[", mcs);
}
//sprintf(tikz_fname, "second_bler_tx%d_u2=%d_mcs%d_chan%d_nsimus%d.tex",transmission_mode,dual_stream_UE,mcs,channel_model,n_frames);
sprintf(tikz_fname, "second_bler_tx%d_u2=%d_mcs%d_chan%d_nsimus%d",transmission_mode,dual_stream_UE,mcs,channel_model,n_frames);
tikz_fd = fopen(tikz_fname,"w");
//fprintf(tikz_fd,"\\addplot[color=red, mark=o] plot coordinates {");
switch (mcs) {
case 0:
fprintf(tikz_fd,"\\addplot[color=blue, mark=star] plot coordinates {");
break;
case 1:
fprintf(tikz_fd,"\\addplot[color=red, mark=star] plot coordinates {");
break;
case 2:
fprintf(tikz_fd,"\\addplot[color=green, mark=star] plot coordinates {");
break;
case 3:
fprintf(tikz_fd,"\\addplot[color=yellow, mark=star] plot coordinates {");
break;
case 4:
fprintf(tikz_fd,"\\addplot[color=black, mark=star] plot coordinates {");
break;
case 5:
fprintf(tikz_fd,"\\addplot[color=blue, mark=o] plot coordinates {");
break;
case 6:
fprintf(tikz_fd,"\\addplot[color=red, mark=o] plot coordinates {");
break;
case 7:
fprintf(tikz_fd,"\\addplot[color=green, mark=o] plot coordinates {");
break;
case 8:
fprintf(tikz_fd,"\\addplot[color=yellow, mark=o] plot coordinates {");
break;
case 9:
fprintf(tikz_fd,"\\addplot[color=black, mark=o] plot coordinates {");
break;
}
// Allocating memory and test the dynamic allocations;
s_re = (double **)malloc(2*sizeof(double *));
s_im = (double **)malloc(2*sizeof(double *));
r_re = (double ***)malloc(num_relay*sizeof(double **));
r_im = (double ***)malloc(num_relay*sizeof(double **));
dci_alloc_rx = (DCI_ALLOC_t **)malloc(num_relay*sizeof(DCI_ALLOC_t *));
if (!(s_re && s_im && r_re && r_im && dci_alloc_rx)) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for (i=0; i<2; i++) {
s_re[i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
s_im[i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
if (!(s_re[i] && s_im[i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
for(j=0; j<num_relay; j++) {
r_re[j] = (double **)malloc(2*sizeof(double*));
r_im[j] = (double **)malloc(2*sizeof(double*));
dci_alloc_rx[j] = (DCI_ALLOC_t *)malloc(8*sizeof(DCI_ALLOC_t));
if (!(r_re[j] && r_im[j] && dci_alloc_rx[j])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(i=0; i<2; i++) {
r_re[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_im[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
if (!(r_re[j][i] && r_im[j][i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
}
/* "Quantize-Forward Relaying" related variables */
sprintf(bler_fname,"bler_relay_QF_mcs%d_%d-QAM_RN%d_bitPerLLR%d.m", mcs, (short)pow(2, get_Qm(mcs)), num_relay, backhaulBitsPerLLR);
bler_fd = fopen(bler_fname, "w");
fprintf(bler_fd,"SNR; MCS; Bits/LLR; NB_OF_RELAYS; TBS; Effective_rate; Coding_Rate; err0; trials0; err1; trials1; err2; trials2; err3; trials3; dci_err; BER;\n");
// Calculate total bits for backhaul and number of quantization levels (MLevel = 2^(backhaulCapacity));
backhaulCapacity = (unsigned short)(get_Qm(mcs) * backhaulBitsPerLLR);
Mlevel = (unsigned short)pow(2, backhaulCapacity); // number quantization levels at uniform Scalar Quantizer (uSQ);
// Memory allocation for LLR related variables;
llr_quant = (short **)malloc16(num_relay * sizeof(short*));
llr_quant_sum = (short *)malloc16((8*((3*8*6144)+12))*sizeof(short));
if (!(llr_quant && llr_quant_sum)) {
printf("Cannot allocate memory for llr_quant and llr_quant_sum...!\n");
exit(-1);
}
bzero(llr_quant_sum, (8*((3*8*6144)+12))*sizeof(short));
for(j=0; j<num_relay; j++) {
llr_quant[j] = (short *)malloc16((8*((3*8*6144)+12))*sizeof(short));
if (!llr_quant[j]) {
printf("Cannot allocate memory for llr_quant[%d]...!\n", j);
exit(-1);
}
bzero(llr_quant[j], (8*((3*8*6144)+12))*sizeof(short));
}
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->crnti = n_rnti;
}
nsymb = (PHY_vars_eNB->lte_frame_parms.Ncp == 0) ? 14 : 12;
// 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_2D[0].rah = 0;
DLSCH_alloc_pdu2_2D[0].rballoc = DLSCH_RB_ALLOC;
DLSCH_alloc_pdu2_2D[0].TPC = 0;
DLSCH_alloc_pdu2_2D[0].dai = 0;
DLSCH_alloc_pdu2_2D[0].harq_pid = 0;
DLSCH_alloc_pdu2_2D[0].tb_swap = 0;
DLSCH_alloc_pdu2_2D[0].mcs1 = mcs;
DLSCH_alloc_pdu2_2D[0].ndi1 = 1;
DLSCH_alloc_pdu2_2D[0].rv1 = 0;
// Forget second codeword
DLSCH_alloc_pdu2_2D[0].tpmi = (transmission_mode>=5 ? 5 : 0); // precoding
DLSCH_alloc_pdu2_2D[0].dl_power_off = (transmission_mode==5 ? 0 : 1);
DLSCH_alloc_pdu2_2D[1].rah = 0;
DLSCH_alloc_pdu2_2D[1].rballoc = DLSCH_RB_ALLOC;
DLSCH_alloc_pdu2_2D[1].TPC = 0;
DLSCH_alloc_pdu2_2D[1].dai = 0;
DLSCH_alloc_pdu2_2D[1].harq_pid = 0;
DLSCH_alloc_pdu2_2D[1].tb_swap = 0;
DLSCH_alloc_pdu2_2D[1].mcs1 = mcs;
DLSCH_alloc_pdu2_2D[1].ndi1 = 1;
DLSCH_alloc_pdu2_2D[1].rv1 = 0;
// Forget second codeword
DLSCH_alloc_pdu2_2D[1].tpmi = (transmission_mode>=5 ? 5 : 0) ; // precoding
DLSCH_alloc_pdu2_2D[1].dl_power_off = (transmission_mode==5 ? 0 : 1);
// Create transport channel structures for SI pdus
PHY_vars_eNB->dlsch_eNB_SI = new_eNB_dlsch(1,1,0);
PHY_vars_eNB->dlsch_eNB_SI->rnti = SI_RNTI;
//PHY_vars_UE->dlsch_ue_SI[0] = new_ue_dlsch(1,1,0);
//PHY_vars_UE->dlsch_ue_SI[0]->rnti = SI_RNTI;
for(j=0; j<num_relay; j++) {
PHY_vars_UE[j]->dlsch_ue_SI[0] = new_ue_dlsch(1,1,0);
PHY_vars_UE[j]->dlsch_ue_SI[0]->rnti = SI_RNTI;
}
// Create random Channels coefficients;
eNB2UE = (channel_desc_t **)malloc(num_relay*sizeof(channel_desc_t *));
if (!(eNB2UE)) {
printf("Cannot allocate memory for Channel Descriptors!\n");
exit(EXIT_FAILURE);
}
for(j=0; j<num_relay; j++) {
eNB2UE[j] = new_channel_desc_scm(PHY_vars_eNB->lte_frame_parms.nb_antennas_tx,
PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx,
channel_model,
BW,
forgetting_factor,
rx_sample_offset,
0);
if (eNB2UE[j] == NULL) {
msg("Problem generating channel model. Exiting.\n");
exit(-1);
}
// if (hold_channel==1)
random_channel(eNB2UE[j]);
}
for (k=0; k<n_users; k++) {
// Create transport channel structures for 2 transport blocks (MIMO)
for (i=0; i<2; i++) {
PHY_vars_eNB->dlsch_eNB[k][i] = new_eNB_dlsch(1,8,0);
if (!PHY_vars_eNB->dlsch_eNB[k][i]) {
printf("Can't get eNB dlsch structures\n");
exit(-1);
}
PHY_vars_eNB->dlsch_eNB[k][i]->rnti = n_rnti+k;
}
}
for(j=0; j<num_relay; j++) {
for (i=0; i<2; i++) {
PHY_vars_UE[j]->dlsch_ue[0][i] = new_ue_dlsch(1,8,0);
if (!PHY_vars_UE[j]->dlsch_ue[0][i]) {
printf("Can't get ue dlsch structures\n");
exit(-1);
}
PHY_vars_UE[j]->dlsch_ue[0][i]->rnti = n_rnti;
}
}
if (DLSCH_alloc_pdu2_2D[0].tpmi == 5) {
PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single = (unsigned short)(taus()&0xffff);
if (n_users > 1)
PHY_vars_eNB->eNB_UE_stats[1].DL_pmi_single = (PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single ^ 0x1555); //opposite PMI
} else {
PHY_vars_eNB->eNB_UE_stats[0].DL_pmi_single = 0;
if (n_users > 1)
PHY_vars_eNB->eNB_UE_stats[1].DL_pmi_single = 0;
}
if (input_fd == NULL) {
for(k=0; k<n_users; k++) {
printf("Generating dlsch params for user %d\n",k);
generate_eNB_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2_2D[k],
n_rnti+k,
format2_2D_M10PRB,
PHY_vars_eNB->dlsch_eNB[k],
&PHY_vars_eNB->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI,
PHY_vars_eNB->eNB_UE_stats[k].DL_pmi_single);
}
num_dci = 0;
num_ue_spec_dci = 0;
num_common_dci = 0;
/*
// common DCI
memcpy(&dci_alloc[num_dci].dci_pdu[0],&CCCH_alloc_pdu,sizeof(DCI1A_5MHz_TDD_1_6_t));
dci_alloc[num_dci].dci_length = sizeof_DCI1A_5MHz_TDD_1_6_t;
dci_alloc[num_dci].L = 2;
dci_alloc[num_dci].rnti = SI_RNTI;
num_dci++;
num_common_dci++;
*/
// UE specific DCI
for(k=0; k<n_users; k++) {
memcpy(&dci_alloc[num_dci].dci_pdu[0], &DLSCH_alloc_pdu2_2D[k], sizeof(DCI2_5MHz_2D_M10PRB_TDD_t));
dci_alloc[num_dci].dci_length = sizeof_DCI2_5MHz_2D_M10PRB_TDD_t;
dci_alloc[num_dci].L = 2;
dci_alloc[num_dci].rnti = n_rnti+k;
dci_alloc[num_dci].format = format2_2D_M10PRB;
dump_dci(&PHY_vars_eNB->lte_frame_parms, &dci_alloc[num_dci]);
num_dci++;
num_ue_spec_dci++;
/*
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 = 2;
dci_alloc[1].rnti = n_rnti;
*/
}
for (k=0; k<n_users; k++) {
input_buffer_length = PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->TBS/8;
input_buffer[k] = (unsigned char *)malloc(input_buffer_length+4);
memset(input_buffer[k], 0, input_buffer_length+4);
if (input_trch_file==0) {
for (i=0; i<input_buffer_length; i++) {
input_buffer[k][i]= (unsigned char)(taus()&0xff);
}
} else {
i=0;
while ((!feof(input_trch_fd)) && (i<input_buffer_length<<3)) {
fscanf(input_trch_fd,"%s",input_trch_val);
if (input_trch_val[0] == '1')
input_buffer[k][i>>3] += (1<<(7-(i&7)));
if (i<16)
printf("input_trch_val %d : %c\n", i, input_trch_val[0]);
i++;
if (((i%8) == 0) && (i<17))
printf("%x\n", input_buffer[k][(i-1)>>3]);
}
printf("Read in %d bits\n", i);
}
}
}
for (ch_realization=0; ch_realization<n_ch_rlz; ch_realization++) {
if(abstx) {
printf("**********************Channel Realization Index = %d **************************\n", ch_realization);
}
for (SNR=snr0; SNR<snr1; SNR+=snr_step) {
error_tot[0]=0;
error_tot[1]=0;
error_tot[2]=0;
error_tot[3]=0;
round_trials[0] = 0;
round_trials[1] = 0;
round_trials[2] = 0;
round_trials[3] = 0;
dci_errors=0;
avg_ber = 0;
round=0;
for (trials=0; trials < n_frames; trials++) {
// printf("Trial %d\n",trials);
fflush(stdout);
round=0;
//if (trials%100==0)
for(j=0; j<num_relay; j++) {
eNB2UE[j]->first_run = 1;
}
while (round < num_rounds) {
round_trials[round]++;
if(transmission_mode>=5)
pmi_feedback=1;
else
pmi_feedback=0;
PMI_FEEDBACK:
// printf("Trial %d : Round %d, pmi_feedback %d \n",trials,round,pmi_feedback);
for (aa=0; aa<PHY_vars_eNB->lte_frame_parms.nb_antennas_tx; aa++) {
#ifdef IFFT_FPGA
memset(&PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id][aa][0], 0, NUMBER_OF_USEFUL_CARRIERS*NUMBER_OF_SYMBOLS_PER_FRAME*sizeof(mod_sym_t));
#else
memset(&PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id][aa][0], 0, FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX*sizeof(mod_sym_t));
#endif
}
if (input_fd == NULL) {
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_2D[0].ndi1 = 1;
DLSCH_alloc_pdu2_2D[0].rv1 = 0;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2_2D[0],sizeof(DCI2_5MHz_2D_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_2D[0].ndi1 = 0;
DLSCH_alloc_pdu2_2D[0].rv1 = round>>1;
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu2_2D[0],sizeof(DCI2_5MHz_2D_M10PRB_TDD_t));
}
num_pdcch_symbols_2 = generate_dci_top(num_ue_spec_dci,
num_common_dci,
dci_alloc,
0,
1024,
&PHY_vars_eNB->lte_frame_parms,
PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
subframe);
if (num_pdcch_symbols_2 > num_pdcch_symbols) {
msg("Error: given num_pdcch_symbols not big enough\n");
exit(-1);
}
for (k=0; k<n_users; k++) {
coded_bits_per_codeword = get_G(&PHY_vars_eNB->lte_frame_parms,
PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb,
PHY_vars_eNB->dlsch_eNB[k][0]->rb_alloc,
get_Qm(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs),
num_pdcch_symbols,
subframe);
#ifdef TBS_FIX
tbs = (double)3*dlsch_tbs25[get_I_TBS(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs)][PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb-1]/4;
#else
tbs = (double)dlsch_tbs25[get_I_TBS(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs)][PHY_vars_eNB->dlsch_eNB[k][0]->nb_rb-1];
#endif
rate = (double)tbs/(double)coded_bits_per_codeword;
uncoded_ber_bit = (short*) malloc(2*coded_bits_per_codeword);
if (trials==0 && round==0)
printf("Rate = %f (G %d, TBS %d, mod %d, pdcch_sym %d)\n",
rate, coded_bits_per_codeword, tbs, get_Qm(PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->mcs), num_pdcch_symbols);
/*
// generate channel here
random_channel(eNB2UE);
// generate frequency response
freq_channel(eNB2UE,NB_RB);
// generate PMI from channel
*/
/*---------------------------------------------------------------------------------------------------*/
/* For our case our code will not enter here; since we do not assume mode 5 (MU-MIMO) transmisssion */
// use the PMI from previous trial
if (DLSCH_alloc_pdu2_2D[0].tpmi == 5) {
PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE[0]->PHY_measurements,
0); // how about this function!!! by default I put '0' as an index (no matter from which relay (or UE in this case) the feedback will come- CHECK THIS);
//PHY_vars_UE->dlsch_ue[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE->PHY_measurements,0);
for(j=0; j<num_relay; j++)
PHY_vars_UE[j]->dlsch_ue[0][0]->pmi_alloc = quantize_subband_pmi(&PHY_vars_UE[j]->PHY_measurements,0);
if (n_users>1)
PHY_vars_eNB->dlsch_eNB[1][0]->pmi_alloc = (PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc ^ 0x1555);
/*
if ((trials<10) && (round==0)) {
printf("tx PMI UE0 %x (pmi_feedback %d)\n",pmi2hex_2Ar1(PHY_vars_eNB->dlsch_eNB[0][0]->pmi_alloc),pmi_feedback);
if (transmission_mode ==5)
printf("tx PMI UE1 %x\n",pmi2hex_2Ar1(PHY_vars_eNB->dlsch_eNB[1][0]->pmi_alloc));
}
*/
}
if (dlsch_encoding(input_buffer[k], &PHY_vars_eNB->lte_frame_parms, num_pdcch_symbols, PHY_vars_eNB->dlsch_eNB[k][0], subframe) < 0)
exit(-1);
// printf("Did not Crash here 1\n");
PHY_vars_eNB->dlsch_eNB[k][0]->rnti = n_rnti + k;
dlsch_scrambling(&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][0],
coded_bits_per_codeword,
0,
subframe<<1);
if (n_frames==1) {
for (s=0; s<PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->C; s++) {
if (s<PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_eNB->dlsch_eNB[k][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_eNB->dlsch_eNB[k][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[k][0]->harq_processes[0]->c[s][i]);
}
}
// printf("Did not Crash here 2\n");
if (transmission_mode == 5) {
amp = (int16_t)(((int32_t)1024*ONE_OVER_SQRT2_Q15)>>15);
} else
amp = 1024;
//if (k==1)
// amp=0;
re_allocated = dlsch_modulation(PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
amp,
subframe,
&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][0]);
// printf("Did not Crash here 3\n");
if (trials==0 && round==0)
printf("RE count %d\n",re_allocated);
if (num_layers>1)
re_allocated = dlsch_modulation(PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
1024,
subframe,
&PHY_vars_eNB->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNB->dlsch_eNB[k][1]);
} //n_users
// printf("Did not Crash here 4\n");
generate_pilots(PHY_vars_eNB,
PHY_vars_eNB->lte_eNB_common_vars.txdataF[eNB_id],
1024,
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*nsymb*10,1,4);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx>1)
write_output("txsigF1.m","txsF1", PHY_vars_eNB->lte_eNB_common_vars.txdataF[0][1],300*nsymb*10,1,4);
}
// do table 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++)
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);
}
if (n_frames==1) {
write_output("txsigF20.m","txsF20", txdataF2[0], FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,1,1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx>1)
write_output("txsigF21.m","txsF21", txdataF2[1], FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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(&txdataF2[aa][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size], // input
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti], // 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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size],
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
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],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size], // input
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti], // 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][subframe*nsymb*PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size],
&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
2*nsymb,
frame_parms);
}
tx_lev += signal_energy(&txdata[aa][subframe*PHY_vars_eNB->lte_frame_parms.samples_per_tti],
PHY_vars_eNB->lte_frame_parms.samples_per_tti);
}
#endif //IFFT_FPGA
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
//printf("tx_lev = %d (%d dB)\n",tx_lev,tx_lev_dB);
if (n_frames==1)
write_output("txsig0.m","txs0", txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
} else { // Read signal from file
i=0;
while (!feof(input_fd)) {
fscanf(input_fd,"%s %s",input_val_str,input_val_str2);
if ((i%4) == 0) {
((short*)txdata[0])[i/2] = (short)((1<<15)*strtod(input_val_str, NULL));
((short*)txdata[0])[(i/2)+1] = (short)((1<<15)*strtod(input_val_str2, NULL));
if ((i/4) < 100)
printf("sample %d => %e + j%e (%d +j%d)\n", i/4, strtod(input_val_str, NULL), strtod(input_val_str2, NULL),
((short*)txdata[0])[i/4], ((short*)txdata[0])[(i/4)+1]);//1,input_val2,);
}
i++;
if (i>(FRAME_LENGTH_SAMPLES))
break;
}
printf("Read in %d samples\n",i/4);
write_output("txsig0.m","txs0", txdata[0],2*frame_parms->samples_per_tti,1,1);
// write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
tx_lev = signal_energy(&txdata[0][0], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
}
// printf("Copying tx ..., nsymb %d (n_tx %d), awgn %d\n", nsymb, PHY_vars_eNB->lte_frame_parms.nb_antennas_tx, awgn_flag);
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]))[(2*subframe*PHY_vars_UE[0]->lte_frame_parms.samples_per_tti) + (i<<1)]); /* I put '0' by default, but this should be checked!!! */
s_im[aa][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[0]->lte_frame_parms.samples_per_tti) +(i<<1)+1]); /* I put '0' by default, but this should be checked!!! */
} else {
for (j=0; j<num_relay; j++) {
for (aarx=0; aarx<PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx; aarx++) {
if (aa==0) {
r_re[j][aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)]);
r_im[j][aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)+1]);
} else {
r_re[j][aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)]); // even samples;
r_im[j][aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti) +(i<<1)+1]); // odd samples;
}
}
}
}
}
}
// n0_pow_dB = tx_lev_dB + 10*log10(512/(NB_RB*12)) + SNR;
// generate new channel if pmi_feedback==0, otherwise hold channel
for (j=0; j<num_relay; j++) {
if(abstx) {
if (trials==0 && round==0) {
if (awgn_flag == 0) {
if(SNR==snr0) {
if(pmi_feedback==0)
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
else
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
} else {
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
}
freq_channel(eNB2UE[j], 25,51);
snr=pow(10.0,.1*SNR);
fprintf(csv_fd,"%f,",SNR);
for (u=0; u<50; u++) {
abs_channel = (eNB2UE[j]->chF[0][u].x*eNB2UE[j]->chF[0][u].x + eNB2UE[j]->chF[0][u].y*eNB2UE[j]->chF[0][u].y);
if(transmission_mode==5) {
fprintf(csv_fd,"%e,",abs_channel);
} else {
pilot_sinr = 10*log10(snr*abs_channel);
fprintf(csv_fd,"%e,",pilot_sinr);
}
}
}
} else {
if (awgn_flag == 0) {
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j], r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
}
}
} else { //ABStraction
if (awgn_flag == 0) {
if (pmi_feedback==0)
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,1);
else
multipath_channel(eNB2UE[j],s_re,s_im,r_re[j],r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
}
}//ABStraction
}
//(double)tx_lev_dB - (SNR+sigma2_dB));
//printf("tx_lev_dB %d\n",tx_lev_dB);
sigma2_dB = 10*log10((double)tx_lev) +10*log10(PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size/(NB_RB*12)) - SNR;
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// n0_pow_dB = tx_lev_dB + 10*log10(512/(NB_RB*12)) + SNR;
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
if (pmi_feedback==0) {
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++) {
for (j=0; j<num_relay; j++) {
//printf("s_re[0][%d]=> %f , r_re[%d][0][%d]=> %f\n",i,s_re[aa][i],j,i,r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i] =
(short) (r_re[j][aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i+1] =
(short) (r_im[j][aa][i] + (iqim*r_re[j][aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
}
}
}
} else {
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++) {
for (j=0; j<num_relay; j++) {
// printf("s_re[0][%d]=> %f , r_re[%d][0][%d]=> %f\n",i,s_re[aa][i],j,i,r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i] = (short) (r_re[j][aa][i]);
((short*) PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[(2*subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti)+2*i+1] = (short) (r_im[j][aa][i]);
}
}
}
}
// 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) {
for (j=0; j<num_relay; j++) {
printf("RX level at %d-th RN in null symbol %d\n", j,
dB_fixed(signal_energy(&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][160+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("RX level at %d-th RN in data symbol %d\n", j,
dB_fixed(signal_energy(&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][160+(2*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES)], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2)));
printf("rx_level at %d-th RN in null symbol %f\n", j,
10*log10(signal_energy_fp(r_re[j],r_im[j],1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES/2,256+(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES))));
printf("rx_level at %d-th RN in data symbol %f\n", j,
10*log10(signal_energy_fp(r_re[j],r_im[j],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;
}
i_mod = get_Qm(mcs);
/* Memory Allocation for summation of Quantized LLRs */
bzero(llr_quant_sum, (8*((3*8*6144)+12))*sizeof(short));
for (j=0; j<num_relay; j++) { // loop over all RNs;
bzero(llr_quant[j], (8*((3*8*6144)+12))*sizeof(short));
// Inner receiver scheduling for 3 slots
for (Ns=(2*subframe); Ns<((2*subframe)+3); Ns++) {
for (l=0; l<pilot2; l++) {
if (n_frames == 1)
printf("Ns %d, l %d\n",Ns,l);
/*
This function implements the OFDM front end processor (FEP).
parameters:
frame_parms LTE DL Frame Parameters
ue_common_vars LTE UE Common Vars
l symbol within slot (0..6/7)
Ns Slot number (0..19)
sample_offset offset within rxdata (points to beginning of subframe)
no_prefix if 1 prefix is removed by HW
*/
slot_fep(PHY_vars_UE[j], l, Ns%20, 0, 0);
#ifdef PERFECT_CE
if (awgn_flag==0) {
// fill in perfect channel estimates
freq_channel(eNB2UE[j],PHY_vars_UE[j]->lte_frame_parms.N_RB_DL,301);
//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);
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 *) PHY_vars_UE[j]->lte_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[j]->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].x*AMP/2);
((int16_t *) PHY_vars_UE[j]->lte_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[j]->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].y*AMP/2) ;
}
}
}
}
} else {
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 *) PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[0][(aa<<1)+aarx])[2*i+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2] = AMP/2;
((int16_t *) PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[0][(aa<<1)+aarx])[2*i+1+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2] = 0/2;
}
}
}
}
#endif
if ((Ns==(2+(2*subframe))) && (l==0)) {
lte_ue_measurements(PHY_vars_UE[j], subframe*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 0);
/*
debug_msg("RX RSSI %d dBm, digital (%d, %d) dB, linear (%d, %d), avg rx power %d dB (%d lin), RX gain %d dB\n",
PHY_vars_UE[j]->PHY_measurements.rx_rssi_dBm[0] - ((PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx==2) ? 3 : 0),
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_dB[0][0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_dB[0][1],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi[0][0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi[0][1],
PHY_vars_UE[j]->PHY_measurements.rx_power_avg_dB[0],
PHY_vars_UE[j]->PHY_measurements.rx_power_avg[0],
PHY_vars_UE[j]->rx_total_gain_dB);
debug_msg("N0 %d dBm digital (%d, %d) dB, linear (%d, %d), avg noise power %d dB (%d lin)\n",
PHY_vars_UE[j]->PHY_measurements.n0_power_tot_dBm,
PHY_vars_UE[j]->PHY_measurements.n0_power_dB[0],
PHY_vars_UE[j]->PHY_measurements.n0_power_dB[1],
PHY_vars_UE[j]->PHY_measurements.n0_power[0],
PHY_vars_UE[j]->PHY_measurements.n0_power[1],
PHY_vars_UE[j]->PHY_measurements.n0_power_avg_dB,
PHY_vars_UE[j]->PHY_measurements.n0_power_avg);
debug_msg("Wideband CQI tot %d dB, wideband cqi avg %d dB\n",
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_tot[0],
PHY_vars_UE[j]->PHY_measurements.wideband_cqi_avg[0]);
*/
if (transmission_mode==5 || transmission_mode==6) {
if (pmi_feedback==1) {
pmi_feedback= 0;
// printf("measured PMI %x\n",pmi2hex_2Ar1(quantize_subband_pmi(&PHY_vars_UE[j]->PHY_measurements,0)));
goto PMI_FEEDBACK;
}
}
}
if ((Ns==(2*subframe)) && (l==pilot1)) { // process symbols 0,1,2
if (dci_flag == 1) {
rx_pdcch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
subframe,
0,
(PHY_vars_UE[j]->lte_frame_parms.mode1_flag == 1) ? SISO : ALAMOUTI,
0);
// overwrite number of pdcch symbols
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
dci_cnt = dci_decoding_procedure(PHY_vars_UE[j],
dci_alloc_rx[j],
eNB_id,
subframe,
SI_RNTI,
RA_RNTI);
//printf("dci_cnt %d\n",dci_cnt);
if (dci_cnt==0) {
dlsch_active = 0;
if (round==0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (num_relay-1)) {
dci_errors++;
error_tot[0]++; // errs[0] is replaced by error_tot[0];
round_trials[0]++;
round = 5;
//printf("DCI error trial %d error_tot[0] %d\n",trials,error_tot[0]);
}
//dci_errors++;
//round=5;
//error_tot[0]++;
//round_trials[0]++;
// printf("DCI error trial %d error_tot[0] %d\n",trials, error_tot[0]);
}
// for (i=1;i<=round;i++)
// round_trials[i]--;
// round=5;
}
for (i=0; i<dci_cnt; i++) {
//printf("Generating dlsch parameters for RNTI %x\n",dci_alloc_rx[j][i].rnti);
if ((dci_alloc_rx[j][i].rnti == n_rnti) &&
(generate_ue_dlsch_params_from_dci(0,
dci_alloc_rx[j][i].dci_pdu,
dci_alloc_rx[j][i].rnti,
dci_alloc_rx[j][i].format,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI) == 0)) {
//dump_dci(&PHY_vars_UE[j]->lte_frame_parms,&dci_alloc_rx[j][i]);
coded_bits_per_codeword = get_G(&PHY_vars_eNB->lte_frame_parms,
PHY_vars_UE[j]->dlsch_ue[0][0]->nb_rb,
PHY_vars_UE[j]->dlsch_ue[0][0]->rb_alloc,
get_Qm(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs),
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols,
subframe);
/*
rate = (double)dlsch_tbs25[get_I_TBS(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs)][PHY_vars_UE[j]->dlsch_ue[0][0]->nb_rb-1]/(coded_bits_per_codeword);
rate*=get_Qm(PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->mcs);
printf("num_pdcch_symbols %d, G %d, TBS %d\n", PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols, coded_bits_per_codeword, PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[PHY_vars_UE[j]->dlsch_ue[0][0]->current_harq_pid]->TBS);
*/
dlsch_active = 1;
} else {
dlsch_active = 0;
if (round==0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (num_relay-1)) {
dci_errors++;
error_tot[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;
}
}
} // if dci_flag==1
else { //dci_flag == 0
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->crnti = n_rnti;
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
generate_ue_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2_2D[0],
C_RNTI,
format2_2D_M10PRB,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI);
dlsch_active = 1;
} // if dci_flag == 1
}
if (dlsch_active == 1) {
if ((Ns==(1+(2*subframe))) && (l==0)) { // process symbols 3,4,5
for (m=PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols; m<pilot2; m++) {
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
(m==PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols)?1:0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
}
}
if ((Ns==(1+(2*subframe))) && (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[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
}
if ((Ns==(2+(2*subframe))) && (l==0)) // process symbols 10,11, do deinterleaving for TTI
for (m=pilot3; m<PHY_vars_UE[j]->lte_frame_parms.symbols_per_tti; m++)
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNB_id,
eNB_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
subframe,
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
i_mod) == -1) {
dlsch_active = 0;
break;
}
if ((n_frames==1) && (Ns==(2+(2*subframe))) && (l==0)) {
write_output("ch0.m", "ch0",
eNB2UE[j]->ch[0],
eNB2UE[j]->channel_length, 1, 8);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("ch1.m", "ch1",
eNB2UE[j]->ch[PHY_vars_eNB->lte_frame_parms.nb_antennas_rx],
eNB2UE[j]->channel_length, 1, 8);
//common vars
write_output("rxsig0.m", "rxs0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0][0],
10*PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF0.m", "rxsF0",
&PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[0][0],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) {
write_output("rxsig1.m","rxs1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdata[1],
PHY_vars_UE[j]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF1.m","rxsF1",
PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[1],
2*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
}
write_output("dlsch00_ch0.m", "dl00_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][0][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1)
write_output("dlsch01_ch0.m", "dl01_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][1][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("dlsch10_ch0.m", "dl10_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][2][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if ((PHY_vars_UE[j]->lte_frame_parms.nb_antennas_rx > 1) && (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1))
write_output("dlsch11_ch0.m","dl11_ch0",
&(PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id][3][0]),
PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
//dlsch_vars
dump_dlsch2(PHY_vars_UE[j], eNB_id, coded_bits_per_codeword);
dump_dlsch2(PHY_vars_UE[j], eNB_id_i, coded_bits_per_codeword);
write_output("dlsch_e.m", "e", PHY_vars_eNB->dlsch_eNB[0][0]->e, coded_bits_per_codeword, 1, 4);
//pdcch_vars
write_output("pdcchF0_ext.m", "pdcchF_ext",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->rxdataF_ext[0],
2*3*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size, 1, 1);
write_output("pdcch00_ch0_ext.m", "pdcch00_ch0_ext",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->dl_ch_estimates_ext[0], 300*3, 1, 1);
write_output("pdcch_rxF_comp0.m", "pdcch0_rxF_comp0",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->rxdataF_comp[0], 4*300, 1, 1);
write_output("pdcch_rxF_llr.m", "pdcch_llr",
PHY_vars_UE[j]->lte_ue_pdcch_vars[eNB_id]->llr, 2400, 1, 4);
}
} // if "dlsch_active = 1";
} // loop over l;
} // loop over Ns;
// calculate uncoded BLER
uncoded_ber=0;
for (i=0; i<coded_bits_per_codeword; i++)
if (PHY_vars_eNB->dlsch_eNB[0][0]->e[i] != (PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0][i] < 0)) {
uncoded_ber_bit[i] = 1;
uncoded_ber++;
} else
uncoded_ber_bit[i] = 0;
uncoded_ber /= coded_bits_per_codeword;
avg_ber += uncoded_ber;
//imran
if(abstx) {
if (trials<10 && round==0 && transmission_mode==5) {
for (iii=0; iii<NB_RB; iii++) {
//fprintf(csv_fd, "%d, %d", (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->pmi_ext[iii]),
// (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id_i]->pmi_ext[iii]));
msg(" %x", (PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->pmi_ext[iii]));
// msg("Opposite Extracted pmi %x\n",(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id_i]->pmi_ext[iii]));
}
}
}
/*
printf("precoded CQI %d dB, opposite precoded CQI %d dB\n",
PHY_vars_UE[j]->PHY_measurements.precoded_cqi_dB[eNB_id][0],
PHY_vars_UE[j]->PHY_measurements.precoded_cqi_dB[eNB_id_i][0]);
*/
PHY_vars_UE[j]->dlsch_ue[0][0]->rnti = n_rnti;
// Should the unscrambling procedure be done before the Quantization or not ?
dlsch_unscrambling(&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols,
PHY_vars_UE[j]->dlsch_ue[0][0],
coded_bits_per_codeword,
PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0],
0,
subframe<<1);
/*----------------------------------------------------------------------------------------------------------*/
/* Here, I have added:
1- dlsch_LLR_quant() procedure which outputs Quantized LLR's at each Relay Node (RN) where symbol-by-symbol uniform SQ (uSQ) is used!
2- dlsch_MRC_relay_LLR() which adds up all LLR values from each RN!
3- Finally the output LLRs are passed to the dlsch_decoding() function!
*/
// LLR quantization at each RN according to the backhaul capacity constraints C_i [bits/sec/Hz];
// Quantization codebook design and parameter passing to the DeNb;
//dlsch_LLR_quant(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0], 8*((3*8*6144)+12), pow(2, backhaulBitsPerLLR), llr_quant[j]);
dlsch_LLR_quant(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0], 6072, Mlevel, llr_quant[j]);
//dlsch_LLR_quant2(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0], 8*((3*8*6144)+12), backhaulBitsPerLLR, llr_quant[j]);
//dlsch_LLR_quant3(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNB_id]->llr[0], 8*((3*8*6144)+12), backhaulBitsPerLLR, llr_quant[j]);
dlsch_MRC_relay_LLR(llr_quant[j], 6072, llr_quant_sum);
/*------------------------------------------------------------------------------------------------------------*/
#ifdef XFORMS
do_forms(form,
&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates_time,
PHY_vars_UE[j]->lte_ue_common_vars.dl_ch_estimates[eNB_id],
PHY_vars_UE[j]->lte_ue_common_vars.rxdata,
PHY_vars_UE[j]->lte_ue_common_vars.rxdataF,
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->rxdataF_comp[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[3]->rxdataF_comp[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->dl_ch_rho_ext[0],
PHY_vars_UE[j]->lte_ue_dlsch_vars[0]->llr[0],coded_bits_per_codeword);
//PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->w[0], 3*(tbs+64));
//uncoded_ber_bit, coded_bits_per_codeword);
/*
printf("Hit a key to continue\n");
c = getchar();
*/
#endif
} //number of relays
/* FINAL DECODER: Decoder uses the sum of the Quantized LLRs as an input to the Turbo Decoder */
// printf("Calling decoding (Ndi %d, harq_pid %d)\n", dlsch_ue[0]->harq_processes[0]->Ndi, dlsch_ue[0]->current_harq_pid);
ret = dlsch_decoding(llr_quant_sum, // PHY_vars_UE[0]->lte_ue_dlsch_vars[eNb_id]->llr[0],
&PHY_vars_UE[0]->lte_frame_parms,
PHY_vars_UE[0]->dlsch_ue[0][0],
subframe,
PHY_vars_UE[0]->lte_ue_pdcch_vars[0]->num_pdcch_symbols);
if (ret <= MAX_TURBO_ITERATIONS) {
if (n_frames == 1)
printf("No DLSCH errors found\n");
// exit(-1);
if (fix_rounds == 0) { // # of HARQ rounds; by default it is '4' and 'fix_rounds=0';
round=5; // The messages are successfully decoded the messages;
} else
round++; // why not as 'round = num_rounds' -> what does it bring if we retransmit a decoded data?!!!;
} else {
//err_total[round]++;
if (n_frames == 1) {
//if ((n_frames==1) || (SNR>=30)) {
printf("DLSCH errors found in round %d, uncoded ber %f\n", round, uncoded_ber);
for (s=0; s<PHY_vars_UE[0]->dlsch_ue[0][0]->harq_processes[0]->C; s++) {
if (s < PHY_vars_UE[0]->dlsch_ue[0][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_UE[0]->dlsch_ue[0][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_UE[0]->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[0]->dlsch_ue[0][0]->harq_processes[0]->c[s][i],
PHY_vars_UE[0]->dlsch_ue[0][0]->harq_processes[0]->c[s][i]^PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->c[s][i]);
}
write_output("rxsig0.m","rxs0",
&PHY_vars_UE[0]->lte_ue_common_vars.rxdata[0][0],
10*PHY_vars_UE[0]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF0.m","rxsF0",
&PHY_vars_UE[0]->lte_ue_common_vars.rxdataF[0][0],
2*PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
if (PHY_vars_UE[0]->lte_frame_parms.nb_antennas_rx > 1) {
write_output("rxsig1.m","rxs1",
PHY_vars_UE[0]->lte_ue_common_vars.rxdata[1],
PHY_vars_UE[0]->lte_frame_parms.samples_per_tti, 1, 1);
write_output("rxsigF1.m","rxsF1",
PHY_vars_UE[0]->lte_ue_common_vars.rxdataF[1],
2*PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb, 2, 1);
}
write_output("dlsch00_ch0.m","dl00_ch0",
&(PHY_vars_UE[0]->lte_ue_common_vars.dl_ch_estimates[eNB_id][0][0]),
PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_UE[0]->lte_frame_parms.nb_antennas_rx > 1)
write_output("dlsch01_ch0.m","dl01_ch0",
&(PHY_vars_UE[0]->lte_ue_common_vars.dl_ch_estimates[eNB_id][1][0]),
PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1)
write_output("dlsch10_ch0.m","dl10_ch0",
&(PHY_vars_UE[0]->lte_ue_common_vars.dl_ch_estimates[eNB_id][2][0]),
PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
if ((PHY_vars_UE[0]->lte_frame_parms.nb_antennas_rx > 1) && (PHY_vars_eNB->lte_frame_parms.nb_antennas_tx > 1))
write_output("dlsch11_ch0.m","dl11_ch0",
&(PHY_vars_UE[0]->lte_ue_common_vars.dl_ch_estimates[eNB_id][3][0]),
PHY_vars_UE[0]->lte_frame_parms.ofdm_symbol_size*nsymb/2, 1, 1);
//dlsch_vars
dump_dlsch2(PHY_vars_UE[0], eNB_id, coded_bits_per_codeword);
write_output("dlsch_e.m","e", PHY_vars_eNB->dlsch_eNB[0][0]->e, coded_bits_per_codeword, 1, 4);
write_output("dlsch_ber_bit.m","ber_bit", uncoded_ber_bit, coded_bits_per_codeword, 1, 0);
write_output("dlsch_eNB_w.m","w", PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->w[0], 3*(tbs+64), 1, 4);
write_output("dlsch_UE_w.m","w", PHY_vars_UE[0]->dlsch_ue[0][0]->harq_processes[0]->w[0], 3*(tbs+64), 1, 0);
exit(-1);
}
error_tot[round]++;
round++;
}
} //round
// printf("\n");
if ((error_tot[0]>=100) && (trials>(n_frames/2)))
break;
//len = chbch_stats_read(stats_buffer,NULL,0,4096);
//printf("%s\n\n",stats_buffer);
} //trials
for (j=0; j<num_relay; j++) {
printf("\n**********************Relay Node %j: SNR = %f dB (tx_lev %f, sigma2_dB %f)**************************\n",
j,
SNR,
(double)tx_lev_dB+10*log10(PHY_vars_UE[j]->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), uncoded_ber %f\n",
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
(double)error_tot[0]/(round_trials[0]),
(double)error_tot[1]/(round_trials[1]),
(double)error_tot[2]/(round_trials[2]),
(double)error_tot[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]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[3]))/((double)round_trials[0])/
(double)PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->TBS,
(1.0*(round_trials[0]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[3]))/((double)round_trials[0]),
avg_ber/round_trials[0]);
fprintf(bler_fd,"%f \t %d \t %d \t %d \t %d \t %f \t %f \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %d \t %f;\n",
SNR,
mcs,
backhaulBitsPerLLR, // Backhaul Capacity in [bits/LLR];
num_relay,
PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->TBS,
rate*((double)(round_trials[0]-dci_errors)/((double)round_trials[0] + round_trials[1] + round_trials[2] + round_trials[3])), //effective rate
rate,
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
dci_errors,
avg_ber/round_trials[0]);
fprintf(tikz_fd,"(%f,%f)", SNR, (float)error_tot[0]/round_trials[0]);
if(abstx) { //ABSTRACTION
blerr= (double)error_tot[0]/(round_trials[0]);
fprintf(csv_fd,"%e;\n", blerr);
} //ABStraction
if (((double)error_tot[0]/(round_trials[0]))<1e-5)
break;
}// SNR
} //ch_realization
fclose(bler_fd);
fprintf(tikz_fd,"};\n");
fclose(tikz_fd);
if (input_trch_file==1)
fclose(input_trch_fd);
if (input_file==1)
fclose(input_fd);
if(abstx) { // ABSTRACTION
fprintf(csv_fd,"];");
fclose(csv_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);
for (j=0; j<num_relay; j++) {
free_ue_dlsch(PHY_vars_UE[j]->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]);
}
for (j=0; j<num_relay; j++) {
for (i=0; i<2; i++) {
free(r_re[j][i]);
free(r_im[j][i]);
}
free(r_re[j]);
free(r_im[j]);
free(eNB2UE[j]);
free(dci_alloc_rx[j]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
free(eNB2UE);
free(dci_alloc_rx);
// lte_sync_time_free();
return(0);
}
openair1/SIMULATION/LTE_RELAY/relay_sim.c deleted 100644 → 0
View file @ 350ee35d
/*******************************************************************************
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, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, 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);
}
openair1/SIMULATION/LTE_RELAY/relay_test_sim.c deleted 100644 → 0
View file @ 350ee35d
/*******************************************************************************
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, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include <string.h>
#include <stdlib.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 OUTPUT_DEBUG 1
#define RBmask0 0x00fc00fc
#define RBmask1 0x0
#define RBmask2 0x0
#define RBmask3 0x0
unsigned char dlsch_cqi;
#define NUM_OF_RN 2
PHY_VARS_eNB *PHY_vars_eNb;
PHY_VARS_UE *PHY_vars_UE[NUM_OF_RN]; // this variable is modified to enable multiple relay nodes (# Relay Node = "NUM_OF_RN");
// In the following function the first parameter ("unsigned char numRN") is added for # RN in the Parallel Relay Network (PRN);
void lte_param_init(unsigned char N_tx, unsigned char N_rx, unsigned char transmission_mode, uint8_t extended_prefix_flag)
{
unsigned int j;
LTE_DL_FRAME_PARMS *lte_frame_parms;
printf("Start lte_param_init\n");
PHY_vars_eNb = (PHY_VARS_eNB *)malloc(sizeof(PHY_VARS_eNB));
for(j=0; j < NUM_OF_RN; j++) {
PHY_vars_UE[j] = (PHY_VARS_UE *)malloc(sizeof(PHY_VARS_UE));
}
PHY_config = (PHY_CONFIG *)malloc(sizeof(PHY_CONFIG));
mac_xface = (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; // why "8" but not "7" ?
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;
for(j=0; j < NUM_OF_RN; j++) {
PHY_vars_UE[j]->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);
for(j=0; j < NUM_OF_RN; j++) {
phy_init_lte_ue(&PHY_vars_UE[j]->lte_frame_parms,
&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars_SI,
PHY_vars_UE[j]->lte_ue_dlsch_vars_ra,
PHY_vars_UE[j]->lte_ue_pbch_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
PHY_vars_UE[j]);
}
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, j, aa;
#ifdef OUTPUT_DEBUG
int s, Kr, Kr_bytes;
#endif
double sigma2, sigma2_dB = 10, SNR, snr0 = -2.0, snr1, rate;
int **txdata;
#ifdef IFFT_FPGA
int **txdataF2;
#endif
LTE_DL_FRAME_PARMS *frame_parms;
double **s_re, **s_im;
double **r_re[NUM_OF_RN], **r_im[NUM_OF_RN]; //3D received signal matrices in the form of r_re[# of RN][][], r_im[# of RN][][];
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=1;
unsigned short NB_RB = conv_nprb(0, DLSCH_RB_ALLOC);
unsigned char Ns, l, m;
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, dlsch_active=0, num_layers;
unsigned int trials, dci_errors=0, round_trials[4]= {0}, error_tot[4]= {0}, decode_error=1;
int re_allocated;
FILE *bler_fd;
char bler_fname[20];
DCI_ALLOC_t dci_alloc[8], dci_alloc_rx[NUM_OF_RN][8]; // where 1st dimension of "dci_alloc_rx" will hold "# of RNs (UEs)" in the system;
int n_frames;
channel_desc_t *eNB2UE[NUM_OF_RN]; //which is a pointer array whose size will be the "# of RNs (UEs)" in the system;
uint8_t num_pdcch_symbols;
uint8_t pilot1, pilot2, pilot3;
//unsigned int NUM_OF_RN = 1;
dci_alloc[0].dci_length = sizeof_DCI0_5MHz_TDD_0_t;
channel_length = (int) 11+2*BW*Td;
//NUM_OF_RN = 1; // by default this program acts exactly as 'dlsim.c';
num_layers = 1;
mcs = 0;
n_frames = 1000;
snr0 = 10;
while ((c = getopt (argc, argv, "hadpm:n:s:t:c: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 '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 -r NUM_OF_RN -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("-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("-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);
snr1 = snr0 + 2.0; // simulated SNR range: [snr0:2.0:snr1];
printf("SNR0 %f, SNR1 %f\n", snr0, snr1);
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
// Allocating memory and test the dynamic allocations;
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
// r_re = (double ***)malloc(NUM_OF_RN*sizeof(double**));
// r_im = (double ***)malloc(NUM_OF_RN*sizeof(double**));
// dci_alloc_rx = (DCI_ALLOC_t **)malloc(NUM_OF_RN*sizeof(DCI_ALLOC_t*));
// eNB2UE = (channel_desc_t **)malloc(NUM_OF_RN*sizeof(channel_desc_t*));
if (!(s_re && s_im)) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(j=0; j < NUM_OF_RN; j++) {
r_re[j] = (double **)malloc(2*sizeof(double*));
r_im[j] = (double **)malloc(2*sizeof(double*));
//dci_alloc_rx[j] = (DCI_ALLOC_t *)malloc(8*sizeof(DCI_ALLOC_t));
if (!(r_re[j] && r_im[j])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
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));
if (!(s_re[i] && s_im[i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
for(j=0; j<NUM_OF_RN; j++) {
r_re[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_im[j][i] = (double *)malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
if (!(r_re[j][i] && r_im[j][i])) {
printf("Cannot allocate memory!\n");
exit(EXIT_FAILURE);
}
}
}
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
printf("Rate = %f (mod %d)\n",(((double)dlsch_tbs25[get_I_TBS(mcs)][NB_RB-1])*3/4)/coded_bits_per_codeword, get_Qm(mcs));
sprintf(bler_fname,"bler_relay_DF_%d_%d.m", mcs, NUM_OF_RN);
bler_fd = fopen(bler_fname,"w");
for(j=0; j < NUM_OF_RN; j++) {
PHY_vars_UE[j]->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 = 5 ; // precoding
// Create transport channel structures for SI pdus
PHY_vars_eNb->dlsch_eNb_SI = new_eNb_dlsch(1,1);
PHY_vars_eNb->dlsch_eNb_SI->rnti = SI_RNTI;
for(j=0; j<NUM_OF_RN; j++) {
PHY_vars_UE[j]->dlsch_ue_SI[0] = new_ue_dlsch(1,1);
PHY_vars_UE[j]->dlsch_ue_SI[0]->rnti = SI_RNTI;
}
// Create random Channels coefficients;
for(j=0; j<NUM_OF_RN; j++) {
eNB2UE[j] = new_channel_desc(1, 1,
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);
if (!PHY_vars_eNb->dlsch_eNb[0][i]) {
printf("Can't get eNb dlsch structures\n");
exit(EXIT_FAILURE);
}
PHY_vars_eNb->dlsch_eNb[0][i]->rnti = 0x1234;
for(j=0; j<NUM_OF_RN; j++) {
PHY_vars_UE[j]->dlsch_ue[0][i] = new_ue_dlsch(1,8);
if (!PHY_vars_UE[j]->dlsch_ue[0][i]) {
printf("Can't get ue dlsch structures\n");
exit(EXIT_FAILURE);
}
PHY_vars_UE[j]->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_eNb->eNB_UE_stats[0].DL_pmi_single = PHY_vars_eNb->dlsch_eNb[0][0]->pmi_alloc;
for(j=0; j < NUM_OF_RN; j++) {
PHY_vars_UE[j]->dlsch_ue[0][0]->pmi_alloc = 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
// 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[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);
}
// Start of the simulation over different SNR values;
for (SNR=snr0; SNR < snr1; SNR +=.5) {
dci_errors = 0;
for(i=0; i < 4; i++) {
round_trials[i] = 0;
error_tot[i] = 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 \n",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]);
#ifdef OUTPUT_DEBUG
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]);
}
#endif
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]);
#ifdef OUTPUT_DEBUG
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);
#endif
if (num_layers > 1)
re_allocated = dlsch_modulation(PHY_vars_eNb->lte_eNB_common_vars.txdataF[eNb_id],
1024,
i, // i = Kr_bytes ==> This might be '1' !?
&PHY_vars_eNb->lte_frame_parms,
num_pdcch_symbols,
PHY_vars_eNb->dlsch_eNb[0][1]);
num_pdcch_symbols = 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
#ifdef OUTPUT_DEBUG
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);
#endif
// do table 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 < 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;
}
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][0], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
}
#else //IFFT_FPGA
#ifdef OUTPUT_DEBUG
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);
#endif
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
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
#ifdef OUTPUT_DEBUG
write_output("txsig0.m", "txs0", txdata[0], FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
#endif
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(j=0; j<NUM_OF_RN; j++) {
r_re[j][aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)]);
r_im[j][aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]);
}
}
}
}
if (awgn_flag == 0) {
for(j=0; j<NUM_OF_RN; j++) {
multipath_channel(eNB2UE[j], s_re, s_im, r_re[j], r_im[j], 2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES, 0);
}
}
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);
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++) {
for (j=0; j < NUM_OF_RN; j++) { // loop over all Relay nodes;
((short*)PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[2*i] =(short)(r_re[j][aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*)PHY_vars_UE[j]->lte_ue_common_vars.rxdata[aa])[2*i+1]=(short)(r_im[j][aa][i]+(iqim*r_re[j][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();
#ifdef OUTPUT_DEBUG
for (j=0; j < NUM_OF_RN; j++) { // loop over all Relay nodes;
printf("RX level in null symbol %d\n", dB_fixed(signal_energy(&PHY_vars_UE->lte_ue_common_vars.rxdata[0][160+OFDM_SYM BOL_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))));
#endif
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;
}
/* Once, at one of the RS, the DLSCH pkt has been decoded, then we continue with the following trial!
Declare an error iff all RNs fail to decode!*/
for (j=0; j < NUM_OF_RN; j++) { // loop over all Relay nodes;
// Inner receiver scheduling for 3 slots
for (Ns=0; Ns < 3; Ns++) {
for (l=0; l < pilot2; l++) {
slot_fep(&PHY_vars_UE[j]->lte_frame_parms,
&PHY_vars_UE[j]->lte_ue_common_vars,
l,
Ns%20,
0, 0);
if (l == 0)
lte_ue_measurements(PHY_vars_UE[j],
&PHY_vars_UE[j]->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
if (dci_flag == 1) { // this flag shows whether DCI packets will be decoded or not; if 1 then decode DCI; otherwise continue with DLSCH;
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->crnti = 0x1234;
PHY_vars_UE[j]->lte_ue_pdcch_vars[0]->num_pdcch_symbols = num_pdcch_symbols;
rx_pdcch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_pdcch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNb_id,
(PHY_vars_UE[j]->lte_frame_parms.mode1_flag == 1) ? SISO : ALAMOUTI,
0);
dci_cnt = dci_decoding_procedure(PHY_vars_UE[j]->lte_ue_pdcch_vars,
dci_alloc_rx[j],
eNb_id,
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI); // what does the return value 'dci_cnt' hold ?
if (dci_cnt == 0) {
dlsch_active = 0;
if(round == 0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (NUM_OF_RN-1)) {
dci_errors++;
error_tot[0]++;
round_trials[0]++;
round = 5;
//printf("DCI error trial %d errs[0] %d\n",trials,errs[0]);
}
}
}
for (i=0; i < dci_cnt; i++) {
if ((dci_alloc_rx[j][i].rnti == C_RNTI) && (dci_alloc_rx[j][i].format == format2_2A_M10PRB) &&
(generate_ue_dlsch_params_from_dci(0,
(DCI2_5MHz_2A_M10PRB_TDD_t *)&dci_alloc_rx[j][i].dci_pdu,
C_RNTI,
format2_2A_M10PRB,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->lte_frame_parms,
SI_RNTI,
RA_RNTI,
P_RNTI) == 0)) {
dlsch_active = 1;
} else {
dlsch_active = 0;
if(round == 0) { // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (NUM_OF_RN-1)) {
dci_errors++;
error_tot[0]++;
round_trials[0]++;
#ifdef OUTPUT_DEBUG
printf("DCI misdetection trial %d\n", trials);
round = 5;
#endif
}
}
}
}
} // if (dci_flag == 1)
else { // if (dci_flag == 0)
generate_ue_dlsch_params_from_dci(0,
&DLSCH_alloc_pdu2,
C_RNTI,
format2_2A_M10PRB,
PHY_vars_UE[j]->dlsch_ue[0],
&PHY_vars_UE[j]->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[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
m,
(m==num_pdcch_symbols)?1:0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
0) == -1) {
dlsch_active = 0;
break;
}
}
}
if ((Ns==1) && (l==pilot1)) {// process symbols 6,7,8
for (m=pilot2; m < pilot3; m++)
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->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[j]->lte_frame_parms.symbols_per_tti; m++)
if (rx_dlsch(&PHY_vars_UE[j]->lte_ue_common_vars,
PHY_vars_UE[j]->lte_ue_dlsch_vars,
&PHY_vars_UE[j]->lte_frame_parms,
eNb_id,
eNb_id_i,
PHY_vars_UE[j]->dlsch_ue[0],
m,
0,
dual_stream_UE,
&PHY_vars_UE[j]->PHY_measurements,
0) == -1) {
dlsch_active = 0;
break;
}
}
} // loop over l;
} // loop over Ns;
if (dlsch_active == 1) {
#ifdef OUTPUT_DEBUG
write_output("rxsig0.m","rxs0", PHY_vars_UE[j]->lte_ue_common_vars.rxdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
write_output("dlsch00_ch0.m","dl00_ch0", &(PHY_vars_UE[j]->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("rxsigF0.m","rxsF0", PHY_vars_UE[j]->lte_ue_common_vars.rxdataF[0], 2*12*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size,2,1);
write_output("rxsigF0_ext.m","rxsF0_ext", PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->rxdataF_ext[0], 2*12*PHY_vars_UE[j->lte_frame_parms.ofdm_symbol_size,1,1);
write_output("dlsch00_ch0_ext.m","dl00_ch0_ext", PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->dl_ch_estimates_ext[0],300*12,1,1);
write_output("pdcchF0_ext.m","pdcchF_ext", PHY_vars_UE[j]->lte_ue_pdcch_vars[eNb_id]->rxdataF_ext[0], 2*3*PHY_vars_UE[j]->lte_frame_parms.ofdm_symbol_size,1,1);
write_output("pdcch00_ch0_ext.m","pdcch00_ch0_ext", PHY_vars_UE[j]->lte_ue_pdcch_vars[eNb_id]->dl_ch_estimates_ext[0],300*3,1,1);
write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0", PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->rxdataF_comp[0],300*(-(PHY_vars_UE[j]->lte_frame_parms.Ncp*2)+14),1,1);
write_output("pdcch_rxF_comp0.m","pdcch0_rxF_comp0", PHY_vars_UE[j]->lte_ue_pdcch_vars[eNb_id]->rxdataF_comp[0],4*300,1,1);
write_output("dlsch_rxF_llr.m","dlsch_llr", PHY_vars_UE[j]->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[j]->lte_ue_pdcch_vars[eNb_id]->llr,2400,1,4);
write_output("dlsch_mag1.m","dlschmag1",PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->dl_ch_mag,300*12,1,1);
write_output("dlsch_mag2.m","dlschmag2",PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->dl_ch_magb,300*12,1,1);
#endif //OUTPUT_DEBUG
// printf("Calling decoding (Ndi %d, harq_pid %d)\n", dlsch_ue[0]->harq_processes[0]->Ndi, dlsch_ue[0]->current_harq_pid);
ret = dlsch_decoding(PHY_vars_UE[j]->lte_ue_dlsch_vars[eNb_id]->llr[0],
&PHY_vars_UE[j]->lte_frame_parms,
PHY_vars_UE[j]->dlsch_ue[0][0],
0,
num_pdcch_symbols);
if (ret <= MAX_TURBO_ITERATIONS) {
//decode_error = 0; // decode error indicator;
round = 5; // one of the RN has successfully decoded the messages;
#ifdef OUTPUT_DEBUG
printf("No DLSCH errors found\n");
#endif
break; // no need to wait for other relay nodes to decode!; (time saving in processing!)
} else {
//decode_error = 1; // decode error indicator;
#ifdef OUTPUT_DEBUG
printf("DLSCH in error in round %d at Relay %d\n", round, j);
for (s=0; s < PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->C; s++) {
if (s < PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->Cminus)
Kr = PHY_vars_UE[j]->dlsch_ue[0][0]->harq_processes[0]->Kminus;
else
Kr = PHY_vars_UE[j]->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[j]->dlsch_ue[0][0]->harq_processes[0]->c[s][i],
PHY_vars_UE[j]->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);
#endif
if (j == (NUM_OF_RN-1)) {
//printf("DLSCH Active, but Decode Error...\n");
error_tot[round]++;
round++;
}
}
} // end of if (dlsch_active == 1);
/* //+++++++++++++++++++++++++++++ ERROR EVENTS ++++++++++++++++++++++++++++++++++++++++++++++++++
if((dlsch_active == 1) && (decode_error == 0)){
round = 5; // one of the RN has successfully decoded the messages;
break; // no need to wait for other relay nodes to decode!; (time saving in processing!)
}
else if(dlsch_active == 0){
//printf("DLSCH NON Active...\n");
if(round == 0){ // if an error in the first DCI, then contunue with the next transmission block !?;
if (j == (NUM_OF_RN-1)){
dci_errors++;
error_tot[0]++;
round_trials[0]++;
round = 5;
break;
}
}
else{
if (j == (NUM_OF_RN-1)){
error_tot[round]++;
round++;
}
}
}
else if(((dlsch_active == 1) && (decode_error == 1))){
if (j == (NUM_OF_RN-1)){
//printf("DLSCH Active, but Decode Error...\n");
error_tot[round]++;
round++;
}
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
} // loop over number of Relay nodes (or UEs in Downlink);
} // loop for numner of rounds;
// printf("\n");
if ((error_tot[0] >= 100) && (trials > (n_frames/2)))
break;
} // trials
for (j=0; j < NUM_OF_RN; j++) {
printf("\n**********************SNR = %f dB (tx_lev %f, sigma2_dB %f)**************************\n", SNR,
(double)tx_lev_dB+10*log10(PHY_vars_UE[j]->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",
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
(double)error_tot[0]/(round_trials[0]),
(double)error_tot[1]/(round_trials[1]),
(double)error_tot[2]/(round_trials[2]),
(double)error_tot[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]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[3]))/((double)round_trials[0])/
(double)PHY_vars_eNb->dlsch_eNb[0][0]->harq_processes[0]->TBS,
(1.0*(round_trials[0]-error_tot[0])+2.0*(round_trials[1]-error_tot[1])+3.0*(round_trials[2]-error_tot[2])+4.0*(round_trials[3]-error_tot[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,
error_tot[0],
round_trials[0],
error_tot[1],
round_trials[1],
error_tot[2],
round_trials[2],
error_tot[3],
round_trials[3],
dci_errors);
if (((double)error_tot[0]/(round_trials[0]))<1e-2)
break;
} // loop for 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);
for (j=0; j < NUM_OF_RN; j++) {
free_ue_dlsch(PHY_vars_UE[j]->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 (j=0; j < NUM_OF_RN; j++) {
for (i=0; i<2; i++) {
free(r_re[j][i]);
free(r_im[j][i]);
}
free(r_re[j]);
free(r_im[j]);
}
for (i=0; i<2; i++) {
free(s_re[i]);
free(s_im[i]);
}
free(s_re);
free(s_im);
// lte_sync_time_free();
return(0);
}
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