/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "common/ran_context.h"
#include "common/config/config_userapi.h"
#include "common/utils/LOG/log.h"
#include "PHY/defs_gNB.h"
#include "PHY/defs_nr_common.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/phy_vars_nr_ue.h"
#include "PHY/types.h"
#include "PHY/INIT/phy_init.h"
#include "PHY/MODULATION/modulation_UE.h"
#include "PHY/MODULATION/nr_modulation.h"
#include "PHY/NR_REFSIG/dmrs_nr.h"
#include "PHY/NR_REFSIG/refsig_defs_ue.h"
#include "PHY/NR_TRANSPORT/nr_dlsch.h"
#include "PHY/NR_TRANSPORT/nr_sch_dmrs.h"
#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
#include "PHY/NR_TRANSPORT/nr_ulsch.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "PHY/TOOLS/tools_defs.h"
#include "SCHED_NR/fapi_nr_l1.h"
#include "SCHED_NR/sched_nr.h"
#include "SCHED_NR_UE/defs.h"
#include "SCHED_NR_UE/fapi_nr_ue_l1.h"
#include "openair1/SIMULATION/TOOLS/sim.h"
#include "openair1/SIMULATION/RF/rf.h"
#include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h"
#include "openair2/RRC/NR/MESSAGES/asn1_msg.h"
//#include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c"
#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h"
#include "common/utils/threadPool/thread-pool.h"
#include "PHY/NR_REFSIG/ptrs_nr.h"
#define inMicroS(a) (((double)(a))/(get_cpu_freq_GHz()*1000.0))
#include "SIMULATION/LTE_PHY/common_sim.h"
#include <openair2/LAYER2/MAC/mac_vars.h>
#include <openair2/RRC/LTE/rrc_vars.h>
#include <executables/softmodem-common.h>
#include "PHY/NR_REFSIG/ul_ref_seq_nr.h"
//#define DEBUG_ULSIM
LCHAN_DESC DCCH_LCHAN_DESC,DTCH_DL_LCHAN_DESC,DTCH_UL_LCHAN_DESC;
rlc_info_t Rlc_info_um,Rlc_info_am_config;
PHY_VARS_gNB *gNB;
PHY_VARS_NR_UE *UE;
RAN_CONTEXT_t RC;
int32_t uplink_frequency_offset[MAX_NUM_CCs][4];
uint16_t sf_ahead=4 ;
int slot_ahead=6 ;
uint16_t sl_ahead=0;
double cpuf;
//uint8_t nfapi_mode = 0;
uint64_t downlink_frequency[MAX_NUM_CCs][4];
THREAD_STRUCT thread_struct;
nfapi_ue_release_request_body_t release_rntis;
uint32_t N_RB_DL = 106;
extern void fix_scd(NR_ServingCellConfig_t *scd);// forward declaration
int8_t nr_mac_rrc_data_ind_ue(const module_id_t module_id,
const int CC_id,
const uint8_t gNB_index,
const frame_t frame,
const sub_frame_t sub_frame,
const rnti_t rnti,
const channel_t channel,
const uint8_t* pduP,
const sdu_size_t pdu_len)
{
return 0;
}
int generate_dlsch_header(unsigned char *mac_header,
unsigned char num_sdus,
unsigned short *sdu_lengths,
unsigned char *sdu_lcids,
unsigned char drx_cmd,
unsigned short timing_advance_cmd,
unsigned char *ue_cont_res_id,
unsigned char short_padding,
unsigned short post_padding){return 0;}
void
rrc_data_ind(
const protocol_ctxt_t *const ctxt_pP,
const rb_id_t Srb_id,
const sdu_size_t sdu_sizeP,
const uint8_t *const buffer_pP
)
{
}
int ocp_gtpv1u_create_s1u_tunnel(instance_t instance,
const gtpv1u_enb_create_tunnel_req_t *create_tunnel_req,
gtpv1u_enb_create_tunnel_resp_t *create_tunnel_resp) {
return 0;
}
int
gtpv1u_create_s1u_tunnel(
const instance_t instanceP,
const gtpv1u_enb_create_tunnel_req_t *const create_tunnel_req_pP,
gtpv1u_enb_create_tunnel_resp_t *const create_tunnel_resp_pP
) {
return 0;
}
int ocp_gtpv1u_delete_s1u_tunnel(const instance_t instance, const gtpv1u_enb_delete_tunnel_req_t *const req_pP) {
return 0;
}
int
rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
const protocol_ctxt_t *const ctxt_pP,
const gtpv1u_enb_create_tunnel_resp_t *const create_tunnel_resp_pP,
uint8_t *inde_list
) {
return 0;
}
int
gtpv1u_create_ngu_tunnel(
const instance_t instanceP,
const gtpv1u_gnb_create_tunnel_req_t * const create_tunnel_req_pP,
gtpv1u_gnb_create_tunnel_resp_t * const create_tunnel_resp_pP){
return 0;
}
int
gtpv1u_update_ngu_tunnel(
const instance_t instanceP,
const gtpv1u_gnb_create_tunnel_req_t *const create_tunnel_req_pP,
const rnti_t prior_rnti
){
return 0;
}
int
nr_rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
const protocol_ctxt_t *const ctxt_pP,
const gtpv1u_gnb_create_tunnel_resp_t *const create_tunnel_resp_pP,
uint8_t *inde_list
){
return 0;
}
// Dummy function to avoid linking error at compilation of nr-ulsim
int is_x2ap_enabled(void)
{
return 0;
}
void nr_rrc_ue_generate_RRCSetupRequest(module_id_t module_id, const uint8_t gNB_index)
{
return;
}
int8_t nr_mac_rrc_data_req_ue(const module_id_t Mod_idP,
const int CC_id,
const uint8_t gNB_id,
const frame_t frameP,
const rb_id_t Srb_id,
uint8_t *buffer_pP)
{
return 0;
}
int DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER(module_id_t module_idP,
int CC_idP,
int UE_id,
rnti_t rntiP,
const uint8_t *sduP,
sdu_size_t sdu_lenP,
const uint8_t *sdu2P,
sdu_size_t sdu2_lenP) {
return 0;
}
//nFAPI P7 dummy functions
int oai_nfapi_dl_tti_req(nfapi_nr_dl_tti_request_t *dl_config_req) { return(0); }
int oai_nfapi_tx_data_req(nfapi_nr_tx_data_request_t *tx_data_req){ return(0); }
int oai_nfapi_ul_dci_req(nfapi_nr_ul_dci_request_t *ul_dci_req){ return(0); }
int oai_nfapi_ul_tti_req(nfapi_nr_ul_tti_request_t *ul_tti_req){ return(0); }
int oai_nfapi_nr_rx_data_indication(nfapi_nr_rx_data_indication_t *ind) { return(0); }
int oai_nfapi_nr_crc_indication(nfapi_nr_crc_indication_t *ind) { return(0); }
int oai_nfapi_nr_srs_indication(nfapi_nr_srs_indication_t *ind) { return(0); }
int oai_nfapi_nr_uci_indication(nfapi_nr_uci_indication_t *ind) { return(0); }
int oai_nfapi_nr_rach_indication(nfapi_nr_rach_indication_t *ind) { return(0); }
int nr_derive_key(int alg_type, uint8_t alg_id,
const uint8_t key[32], uint8_t **out)
{
return 0;
}
typedef struct {
uint64_t optmask; //mask to store boolean config options
uint8_t nr_dlsch_parallel; // number of threads for dlsch decoding, 0 means no parallelization
tpool_t Tpool; // thread pool
} nrUE_params_t;
void processSlotTX(void *arg) {}
nrUE_params_t nrUE_params;
nrUE_params_t *get_nrUE_params(void) {
return &nrUE_params;
}
// needed for some functions
uint16_t n_rnti = 0x1234;
openair0_config_t openair0_cfg[MAX_CARDS];
//const uint8_t nr_rv_round_map[4] = {0, 2, 1, 3};
channel_desc_t *UE2gNB[NUMBER_OF_UE_MAX][NUMBER_OF_gNB_MAX];
int main(int argc, char **argv)
{
char c;
int i;
double SNR, snr0 = -2.0, snr1 = 2.0;
double sigma, sigma_dB;
double snr_step = .2;
uint8_t snr1set = 0;
int slot = 8, frame = 1;
FILE *output_fd = NULL;
double **s_re,**s_im,**r_re,**r_im;
//uint8_t write_output_file = 0;
int trial, n_trials = 1, n_false_positive = 0, delay = 0;
double maxDoppler = 0.0;
uint8_t n_tx = 1, n_rx = 1;
//uint8_t transmission_mode = 1;
//uint16_t Nid_cell = 0;
channel_desc_t *UE2gNB;
uint8_t extended_prefix_flag = 0;
//int8_t interf1 = -21, interf2 = -21;
FILE *input_fd = NULL;
SCM_t channel_model = AWGN; //Rayleigh1_anticorr;
uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1;
NB_UE_INST = 1;
//unsigned char frame_type = 0;
NR_DL_FRAME_PARMS *frame_parms;
int loglvl = OAILOG_INFO;
//uint64_t SSB_positions=0x01;
uint16_t nb_symb_sch = 12;
int start_symbol = 0;
uint16_t nb_rb = 50;
int Imcs = 9;
uint8_t precod_nbr_layers = 1;
int gNB_id = 0;
int ap;
int tx_offset;
int32_t txlev=0;
int start_rb = 0;
int UE_id =0; // [hna] only works for UE_id = 0 because NUMBER_OF_NR_UE_MAX is set to 1 (phy_init_nr_gNB causes segmentation fault)
float target_error_rate = 0.01;
int print_perf = 0;
cpuf = get_cpu_freq_GHz();
int msg3_flag = 0;
int rv_index = 0;
float roundStats[100];
double effRate[100];
double effTP[100];
//float eff_tp_check = 0.7;
uint8_t snrRun;
int prb_inter = 0;
int enable_ptrs = 0;
int modify_dmrs = 0;
/* L_PTRS = ptrs_arg[0], K_PTRS = ptrs_arg[1] */
int ptrs_arg[2] = {-1,-1};// Invalid values
/* DMRS TYPE = dmrs_arg[0], Add Pos = dmrs_arg[1] */
int dmrs_arg[2] = {-1,-1};// Invalid values
uint16_t ptrsSymPos = 0;
uint16_t ptrsSymbPerSlot = 0;
uint16_t ptrsRePerSymb = 0;
uint8_t transform_precoding = 1; // 0 - ENABLE, 1 - DISABLE
uint8_t num_dmrs_cdm_grps_no_data = 1;
uint8_t mcs_table = 0;
UE_nr_rxtx_proc_t UE_proc;
FILE *scg_fd=NULL;
int file_offset = 0;
double DS_TDL = .03;
int ibwps=24;
int ibwp_rboffset=41;
int params_from_file = 0;
if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0 ) {
exit_fun("[NR_ULSIM] Error, configuration module init failed\n");
}
int ul_proc_error = 0; // uplink processing checking status flag
//logInit();
randominit(0);
/* initialize the sin-cos table */
InitSinLUT();
while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:ikl:m:n:p:r:s:u:w:y:z:F:G:H:M:N:PR:S:T:U:L:Z")) != -1) {
printf("handling optarg %c\n",c);
switch (c) {
/*case 'd':
frame_type = 1;
break;*/
case 'a':
start_symbol = atoi(optarg);
AssertFatal(start_symbol >= 0 && start_symbol < 13,"start_symbol %d is not in 0..12\n",start_symbol);
break;
case 'b':
nb_symb_sch = atoi(optarg);
AssertFatal(nb_symb_sch > 0 && nb_symb_sch < 15,"start_symbol %d is not in 1..14\n",nb_symb_sch);
break;
case 'c':
n_rnti = atoi(optarg);
AssertFatal(n_rnti > 0 && n_rnti<=65535,"Illegal n_rnti %x\n",n_rnti);
break;
case 'd':
delay = atoi(optarg);
break;
case 'e':
msg3_flag = 1;
break;
case 'f':
scg_fd = fopen(optarg, "r");
if (scg_fd == NULL) {
printf("Error opening %s\n", optarg);
exit(-1);
}
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 = TDL_C;
DS_TDL = .030; // 30 ns
break;
case 'I':
channel_model = TDL_C;
DS_TDL = .3; // 300ns
break;
case 'J':
channel_model=TDL_D;
DS_TDL = .03;
break;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
break;
case 'i':
prb_inter=1;
break;
case 'k':
printf("Setting threequarter_fs_flag\n");
openair0_cfg[0].threequarter_fs= 1;
break;
case 'l':
nb_symb_sch = atoi(optarg);
break;
case 'm':
Imcs = atoi(optarg);
break;
case 'n':
n_trials = atoi(optarg);
break;
case 'p':
extended_prefix_flag = 1;
break;
case 'r':
nb_rb = atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
printf("Setting SNR0 to %f\n", snr0);
break;
case 'u':
mu = atoi(optarg);
break;
case 'w':
start_rb = atoi(optarg);
break;
/*
case 't':
eff_tp_check = (float)atoi(optarg)/100;
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 'x':
transmission_mode = atoi(optarg);
break;*/
case 'y':
n_tx = atoi(optarg);
if ((n_tx == 0) || (n_tx > 2)) {
printf("Unsupported number of tx antennas %d\n", n_tx);
exit(-1);
}
break;
case 'z':
n_rx = atoi(optarg);
if ((n_rx == 0) || (n_rx > 8)) {
printf("Unsupported number of rx antennas %d\n", n_rx);
exit(-1);
}
break;
case 'F':
input_fd = fopen(optarg, "r");
if (input_fd == NULL) {
printf("Problem with filename %s\n", optarg);
exit(-1);
}
break;
case 'G':
file_offset = atoi(optarg);
break;
case 'H':
slot = atoi(optarg);
break;
case 'M':
// SSB_positions = atoi(optarg);
break;
case 'N':
// Nid_cell = atoi(optarg);
break;
case 'R':
N_RB_DL = atoi(optarg);
N_RB_UL = N_RB_DL;
break;
case 'S':
snr1 = atof(optarg);
snr1set = 1;
printf("Setting SNR1 to %f\n", snr1);
break;
case 'P':
print_perf=1;
opp_enabled=1;
break;
case 'L':
loglvl = atoi(optarg);
break;
case 'T':
enable_ptrs=1;
for(i=0; i < atoi(optarg); i++){
ptrs_arg[i] = atoi(argv[optind++]);
}
break;
case 'U':
modify_dmrs = 1;
for(i=0; i < atoi(optarg); i++){
dmrs_arg[i] = atoi(argv[optind++]);
}
break;
case 'Q':
params_from_file = 1;
break;
case 'Z':
transform_precoding = 0; // enabled
num_dmrs_cdm_grps_no_data = 2;
mcs_table = 3;
printf("NOTE: TRANSFORM PRECODING (SC-FDMA) is ENABLED in UPLINK (0 - ENABLE, 1 - DISABLE) : %d \n", transform_precoding);
break;
default:
case 'h':
printf("%s -h(elp) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId -Z Enable SC-FDMA in Uplink \n", argv[0]);
//printf("-d Use TDD\n");
printf("-d Introduce delay in terms of number of samples\n");
printf("-f Number of frames to simulate\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
printf("-h This message\n");
printf("-i Activate PRB based averaging for channel estimation. Frequncy domain interpolation by default.\n");
//printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 10 dB if ending SNR isn't given\n");
printf("-m MCS value\n");
printf("-n Number of trials to simulate\n");
printf("-p Use extended prefix mode\n");
printf("-t Delay spread for multipath channel\n");
printf("-u Set the numerology\n");
printf("-w Start PRB for PUSCH\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("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
//printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
printf("-G Offset of samples to read from file (0 default)\n");
printf("-M Multiple SSB positions in burst\n");
printf("-N Nid_cell\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-R N_RB_DL\n");
printf("-t Acceptable effective throughput (in percentage)\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-P Print ULSCH performances\n");
printf("-T Enable PTRS, arguments list L_PTRS{0,1,2} K_PTRS{2,4}, e.g. -T 2 0 2 \n");
printf("-U Change DMRS Config, arguments list DMRS TYPE{0=A,1=B} DMRS AddPos{0:3}, e.g. -U 2 0 2 \n");
printf("-Q If -F used, read parameters from file\n");
printf("-Z If -Z is used, SC-FDMA or transform precoding is enabled in Uplink \n");
exit(-1);
break;
}
}
logInit();
set_glog(loglvl);
T_stdout = 1;
get_softmodem_params()->phy_test = 1;
get_softmodem_params()->do_ra = 0;
get_softmodem_params()->usim_test = 1;
if (snr1set == 0)
snr1 = snr0 + 10;
double sampling_frequency;
double bandwidth;
if (N_RB_UL >= 217) sampling_frequency = 122.88;
else if (N_RB_UL >= 106) sampling_frequency = 61.44;
else if (N_RB_UL >= 32) sampling_frequency = 32.72;
else { printf("Need at least 106 PRBs\b"); exit(-1); }
if (N_RB_UL == 273) bandwidth = 100;
else if (N_RB_UL == 217) bandwidth = 80;
else if (N_RB_UL == 106) bandwidth = 40;
else if (N_RB_UL == 32) bandwidth = 50;
else { printf("Add N_RB_UL %d\n",N_RB_UL); exit(-1); }
if (openair0_cfg[0].threequarter_fs == 1) sampling_frequency*=.75;
UE2gNB = new_channel_desc_scm(n_tx, n_rx, channel_model,
sampling_frequency,
bandwidth,
DS_TDL,
0, 0, 0, 0);
if (UE2gNB == NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
UE2gNB->max_Doppler = maxDoppler;
RC.gNB = (PHY_VARS_gNB **) malloc(sizeof(PHY_VARS_gNB *));
RC.gNB[0] = calloc(1,sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0];
gNB->ofdm_offset_divisor = UINT_MAX;
gNB->threadPool = (tpool_t*)malloc(sizeof(tpool_t));
gNB->respDecode = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
char tp_param[] = "n";
initTpool(tp_param, gNB->threadPool, false);
initNotifiedFIFO(gNB->respDecode);
gNB->resp_L1_tx = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
initNotifiedFIFO(gNB->resp_L1_tx);
notifiedFIFO_elt_t *msgL1Tx = newNotifiedFIFO_elt(sizeof(processingData_L1tx_t),0,gNB->resp_L1_tx,NULL);
processingData_L1tx_t *msgDataTx = (processingData_L1tx_t *)NotifiedFifoData(msgL1Tx);
msgDataTx->slot = -1;
gNB->phy_proc_tx_0 = &msgDataTx->phy_proc_tx;
pushNotifiedFIFO(gNB->resp_L1_tx,msgL1Tx); // to unblock the process in the beginning
//gNB_config = &gNB->gNB_config;
//memset((void *)&gNB->UL_INFO,0,sizeof(gNB->UL_INFO));
gNB->UL_INFO.rx_ind.pdu_list = (nfapi_nr_rx_data_pdu_t *)malloc(NB_UE_INST*sizeof(nfapi_nr_rx_data_pdu_t));
gNB->UL_INFO.crc_ind.crc_list = (nfapi_nr_crc_t *)malloc(NB_UE_INST*sizeof(nfapi_nr_crc_t));
gNB->UL_INFO.rx_ind.number_of_pdus = 0;
gNB->UL_INFO.crc_ind.number_crcs = 0;
gNB->prb_interpolation = prb_inter;
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
frame_parms->N_RB_DL = N_RB_DL;
frame_parms->N_RB_UL = N_RB_UL;
frame_parms->Ncp = extended_prefix_flag ? EXTENDED : NORMAL;
s_re = malloc(n_tx*sizeof(double*));
s_im = malloc(n_tx*sizeof(double*));
r_re = malloc(n_rx*sizeof(double*));
r_im = malloc(n_rx*sizeof(double*));
RC.nb_nr_macrlc_inst = 1;
RC.nb_nr_mac_CC = (int*)malloc(RC.nb_nr_macrlc_inst*sizeof(int));
for (i = 0; i < RC.nb_nr_macrlc_inst; i++)
RC.nb_nr_mac_CC[i] = 1;
mac_top_init_gNB();
//gNB_MAC_INST* gNB_mac = RC.nrmac[0];
gNB_RRC_INST rrc;
memset((void*)&rrc,0,sizeof(rrc));
rrc.carrier.servingcellconfigcommon = calloc(1,sizeof(*rrc.carrier.servingcellconfigcommon));
NR_ServingCellConfigCommon_t *scc = rrc.carrier.servingcellconfigcommon;
NR_ServingCellConfig_t *scd = calloc(1,sizeof(NR_ServingCellConfig_t));
NR_CellGroupConfig_t *secondaryCellGroup=calloc(1,sizeof(*secondaryCellGroup));
prepare_scc(rrc.carrier.servingcellconfigcommon);
uint64_t ssb_bitmap;
fill_scc(rrc.carrier.servingcellconfigcommon,&ssb_bitmap,N_RB_DL,N_RB_DL,mu,mu);
fix_scc(scc,ssb_bitmap);
prepare_scd(scd);
fill_default_secondaryCellGroup(scc, scd, secondaryCellGroup, 0, 1, n_tx, 0, 0, 0);
// xer_fprint(stdout, &asn_DEF_NR_CellGroupConfig, (const void*)secondaryCellGroup);
/* RRC parameter validation for secondaryCellGroup */
fix_scd(scd);
AssertFatal((gNB->if_inst = NR_IF_Module_init(0))!=NULL,"Cannot register interface");
gNB->if_inst->NR_PHY_config_req = nr_phy_config_request;
// common configuration
rrc_mac_config_req_gNB(0,0, n_tx, n_rx, 0, scc, &rrc.carrier.mib,0, 0, NULL);
// UE dedicated configuration
rrc_mac_config_req_gNB(0,0, n_tx, n_rx, 0, scc, &rrc.carrier.mib,1, secondaryCellGroup->spCellConfig->reconfigurationWithSync->newUE_Identity,secondaryCellGroup);
frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx;
nfapi_nr_config_request_scf_t *cfg = &gNB->gNB_config;
cfg->carrier_config.num_tx_ant.value = n_tx;
cfg->carrier_config.num_rx_ant.value = n_rx;
nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,0,0x01);
phy_init_nr_gNB(gNB,0,1);
N_RB_DL = gNB->frame_parms.N_RB_DL;
NR_BWP_Uplink_t *ubwp=secondaryCellGroup->spCellConfig->spCellConfigDedicated->uplinkConfig->uplinkBWP_ToAddModList->list.array[0];
//crcTableInit();
//nr_phy_config_request_sim(gNB, N_RB_DL, N_RB_UL, mu, Nid_cell, SSB_positions);
//configure UE
UE = malloc(sizeof(PHY_VARS_NR_UE));
memset((void*)UE,0,sizeof(PHY_VARS_NR_UE));
PHY_vars_UE_g = malloc(sizeof(PHY_VARS_NR_UE**));
PHY_vars_UE_g[0] = malloc(sizeof(PHY_VARS_NR_UE*));
PHY_vars_UE_g[0][0] = UE;
memcpy(&UE->frame_parms, frame_parms, sizeof(NR_DL_FRAME_PARMS));
//phy_init_nr_top(frame_parms);
if (init_nr_ue_signal(UE, 1, 0) != 0) {
printf("Error at UE NR initialisation\n");
exit(-1);
}
//nr_init_frame_parms_ue(&UE->frame_parms);
init_nr_ue_transport(UE, 0);
/*
for (int sf = 0; sf < 2; sf++) {
for (i = 0; i < 2; i++) {
UE->ulsch[sf][0][i] = new_nr_ue_ulsch(N_RB_UL, 8, 0);
if (!UE->ulsch[sf][0][i]) {
printf("Can't get ue ulsch structures\n");
exit(-1);
}
}
}
*/
//Configure UE
NR_UE_RRC_INST_t rrcue;
memset(&rrcue,0,sizeof(NR_UE_RRC_INST_t));
rrc.carrier.MIB = (uint8_t*) malloc(4);
rrc.carrier.sizeof_MIB = do_MIB_NR(&rrc,0);
rrcue.mib = rrc.carrier.mib.message.choice.mib;
rrcue.scell_group_config=secondaryCellGroup;
nr_l2_init_ue(&rrcue);
NR_UE_MAC_INST_t* UE_mac = get_mac_inst(0);
UE->if_inst = nr_ue_if_module_init(0);
UE->if_inst->scheduled_response = nr_ue_scheduled_response;
UE->if_inst->phy_config_request = nr_ue_phy_config_request;
UE->if_inst->dl_indication = nr_ue_dl_indication;
UE->if_inst->ul_indication = nr_ue_ul_indication;
UE_mac->if_module = nr_ue_if_module_init(0);
// nr_rrc_mac_config_req_ue(0,0,0,rrc.carrier.mib.message.choice.mib, NULL, NULL, secondaryCellGroup);
nr_ue_phy_config_request(&UE_mac->phy_config);
unsigned char harq_pid = 0;
NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[UE_id][0];
//nfapi_nr_ul_config_ulsch_pdu *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu;
nfapi_nr_ul_tti_request_t *UL_tti_req = malloc(sizeof(*UL_tti_req));
NR_Sched_Rsp_t *Sched_INFO = malloc(sizeof(*Sched_INFO));
memset((void*)Sched_INFO,0,sizeof(*Sched_INFO));
Sched_INFO->UL_tti_req=UL_tti_req;
nfapi_nr_pusch_pdu_t *pusch_pdu = &UL_tti_req->pdus_list[0].pusch_pdu;
NR_UE_ULSCH_t **ulsch_ue = UE->ulsch[0][0];
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
uint32_t errors_decoding = 0;
test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
nr_scheduled_response_t scheduled_response;
fapi_nr_ul_config_request_t ul_config;
fapi_nr_tx_request_t tx_req;
memset(&scheduled_response, 0, sizeof(scheduled_response));
memset(&ul_config, 0, sizeof(ul_config));
memset(&tx_req, 0, sizeof(tx_req));
uint8_t ptrs_mcs1 = 2;
uint8_t ptrs_mcs2 = 4;
uint8_t ptrs_mcs3 = 10;
uint16_t n_rb0 = 25;
uint16_t n_rb1 = 75;
uint16_t pdu_bit_map = PUSCH_PDU_BITMAP_PUSCH_DATA; // | PUSCH_PDU_BITMAP_PUSCH_PTRS;
uint8_t max_rounds = 4;
uint8_t crc_status = 0;
unsigned char mod_order = nr_get_Qm_ul(Imcs, mcs_table);
uint16_t code_rate = nr_get_code_rate_ul(Imcs, mcs_table);
uint8_t mapping_type = typeB; // Default Values
pusch_dmrs_type_t dmrs_config_type = pusch_dmrs_type1; // Default Values
pusch_dmrs_AdditionalPosition_t add_pos = pusch_dmrs_pos0; // Default Values
/* validate parameters othwerwise default values are used */
/* -U flag can be used to set DMRS parameters*/
if(modify_dmrs)
{
if(dmrs_arg[0] == 0)
{
mapping_type = typeA;
}
else if (dmrs_arg[0] == 1)
{
mapping_type = typeB;
}
/* Additional DMRS positions */
if(dmrs_arg[1] >= 0 && dmrs_arg[1] <=3 )
{
add_pos = dmrs_arg[1];
}
}
printf("NOTE: DMRS config is modified with Mapping Type %d , Additional Position %d \n", mapping_type, add_pos );
uint8_t length_dmrs = pusch_len1;
uint16_t l_prime_mask = get_l_prime(nb_symb_sch, mapping_type, add_pos, length_dmrs, start_symbol, NR_MIB__dmrs_TypeA_Position_pos2);
uint16_t number_dmrs_symbols = get_dmrs_symbols_in_slot(l_prime_mask, nb_symb_sch);
printf("num dmrs sym %d\n",number_dmrs_symbols);
uint8_t nb_re_dmrs = (dmrs_config_type == pusch_dmrs_type1) ? 6 : 4;
// if transform precoding is enabled
if (transform_precoding == 0) {
AssertFatal(enable_ptrs == 0, "PTRS NOT SUPPORTED IF TRANSFORM PRECODING IS ENABLED\n");
int8_t index = get_index_for_dmrs_lowpapr_seq((NR_NB_SC_PER_RB/2) * nb_rb);
AssertFatal(index >= 0, "Num RBs not configured according to 3GPP 38.211 section 6.3.1.4. For PUSCH with transform precoding, num RBs cannot be multiple of any other primenumber other than 2,3,5\n");
dmrs_config_type = pusch_dmrs_type1;
printf("[ULSIM]: TRANSFORM PRECODING ENABLED. Num RBs: %d, index for DMRS_SEQ: %d\n", nb_rb, index);
}
nb_re_dmrs = nb_re_dmrs * num_dmrs_cdm_grps_no_data;
unsigned int available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, number_dmrs_symbols, mod_order, 1);
unsigned int TBS = nr_compute_tbs(mod_order, code_rate, nb_rb, nb_symb_sch, nb_re_dmrs * number_dmrs_symbols, 0, 0, precod_nbr_layers);
printf("[ULSIM]: length_dmrs: %u, l_prime_mask: %u number_dmrs_symbols: %u, mapping_type: %u add_pos: %d \n", length_dmrs, l_prime_mask, number_dmrs_symbols, mapping_type, add_pos);
printf("[ULSIM]: CDM groups: %u, dmrs_config_type: %d, num_rbs: %u, nb_symb_sch: %u\n", num_dmrs_cdm_grps_no_data, dmrs_config_type, nb_rb, nb_symb_sch);
printf("[ULSIM]: MCS: %d, mod order: %u, code_rate: %u\n", Imcs, mod_order, code_rate);
printf("[ULSIM]: VALUE OF G: %u, TBS: %u\n", available_bits, TBS);
uint8_t ulsch_input_buffer[TBS/8];
ulsch_input_buffer[0] = 0x31;
for (i = 1; i < TBS/8; i++) {
ulsch_input_buffer[i] = (unsigned char) rand();
}
uint8_t ptrs_time_density = get_L_ptrs(ptrs_mcs1, ptrs_mcs2, ptrs_mcs3, Imcs, mcs_table);
uint8_t ptrs_freq_density = get_K_ptrs(n_rb0, n_rb1, nb_rb);
int ptrs_symbols = 0; // to calculate total PTRS RE's in a slot
double ts = 1.0/(frame_parms->subcarrier_spacing * frame_parms->ofdm_symbol_size);
/* -T option enable PTRS */
if(enable_ptrs)
{
/* validate parameters othwerwise default values are used */
if(ptrs_arg[0] == 0 || ptrs_arg[0] == 1 || ptrs_arg[0] == 2 )
{
ptrs_time_density = ptrs_arg[0];
}
if(ptrs_arg[1] == 2 || ptrs_arg[1] == 4 )
{
ptrs_freq_density = ptrs_arg[1];
}
pdu_bit_map |= PUSCH_PDU_BITMAP_PUSCH_PTRS;
printf("NOTE: PTRS Enabled with L %d, K %d \n", ptrs_time_density, ptrs_freq_density );
}
if (input_fd != NULL || n_trials == 1) max_rounds=1;
if(1<<ptrs_time_density >= nb_symb_sch)
pdu_bit_map &= ~PUSCH_PDU_BITMAP_PUSCH_PTRS; // disable PUSCH PTRS
printf("\n");
int frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
for (int aatx=0; aatx<n_tx; aatx++) {
s_re[aatx] = calloc(1,frame_length_complex_samples*sizeof(double));
s_im[aatx] = calloc(1,frame_length_complex_samples*sizeof(double));
}
for (int aarx=0; aarx<n_rx; aarx++) {
r_re[aarx] = calloc(1,frame_length_complex_samples*sizeof(double));
r_im[aarx] = calloc(1,frame_length_complex_samples*sizeof(double));
}
//for (int i=0;i<16;i++) printf("%f\n",gaussdouble(0.0,1.0));
snrRun = 0;
int n_errs = 0;
int read_errors=0;
int slot_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);
int slot_length = slot_offset - frame_parms->get_samples_slot_timestamp(slot-1,frame_parms,0);
if (input_fd != NULL) {
AssertFatal(frame_parms->nb_antennas_rx == 1, "nb_ant != 1\n");
// 800 samples is N_TA_OFFSET for FR1 @ 30.72 Ms/s,
AssertFatal(frame_parms->subcarrier_spacing==30000,"only 30 kHz for file input for now (%d)\n",frame_parms->subcarrier_spacing);
if (params_from_file) {
fseek(input_fd,file_offset*((slot_length<<2)+4000+16),SEEK_SET);
read_errors+=fread((void*)&n_rnti,sizeof(int16_t),1,input_fd);
printf("rnti %x\n",n_rnti);
read_errors+=fread((void*)&nb_rb,sizeof(int16_t),1,input_fd);
printf("nb_rb %d\n",nb_rb);
int16_t dummy;
read_errors+=fread((void*)&start_rb,sizeof(int16_t),1,input_fd);
//fread((void*)&dummy,sizeof(int16_t),1,input_fd);
printf("rb_start %d\n",start_rb);
read_errors+=fread((void*)&nb_symb_sch,sizeof(int16_t),1,input_fd);
//fread((void*)&dummy,sizeof(int16_t),1,input_fd);
printf("nb_symb_sch %d\n",nb_symb_sch);
read_errors+=fread((void*)&start_symbol,sizeof(int16_t),1,input_fd);
printf("start_symbol %d\n",start_symbol);
read_errors+=fread((void*)&Imcs,sizeof(int16_t),1,input_fd);
printf("mcs %d\n",Imcs);
read_errors+=fread((void*)&rv_index,sizeof(int16_t),1,input_fd);
printf("rv_index %d\n",rv_index);
// fread((void*)&harq_pid,sizeof(int16_t),1,input_fd);
read_errors+=fread((void*)&dummy,sizeof(int16_t),1,input_fd);
printf("harq_pid %d\n",harq_pid);
}
fseek(input_fd,file_offset*sizeof(int16_t)*2,SEEK_SET);
read_errors+=fread((void*)&gNB->common_vars.rxdata[0][slot_offset-delay],
sizeof(int16_t),
slot_length<<1,
input_fd);
if (read_errors==0) {
printf("error reading file\n");
exit(1);
}
for (int i=0;i<16;i+=2) printf("slot_offset %d : %d,%d\n",
slot_offset,
((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[i],
((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[1+i]);
mod_order = nr_get_Qm_ul(Imcs, mcs_table);
code_rate = nr_get_code_rate_ul(Imcs, mcs_table);
}
uint32_t errors_scrambling[4][100];
int n_errors[4][100];
int round_trials[4][100];
double blerStats[4][100];
double berStats[4][100];
double snrStats[100];
memset(errors_scrambling, 0, sizeof(uint32_t)*4*100);
memset(n_errors, 0, sizeof(int)*4*100);
memset(round_trials, 0, sizeof(int)*4*100);
memset(blerStats, 0, sizeof(double)*4*100);
memset(berStats, 0, sizeof(double)*4*100);
memset(snrStats, 0, sizeof(double)*100);
for (SNR = snr0; SNR < snr1; SNR += snr_step) {
varArray_t *table_rx=initVarArray(1000,sizeof(double));
int error_flag = 0;
n_false_positive = 0;
effRate[snrRun] = 0;
effTP[snrRun] = 0;
reset_meas(&gNB->phy_proc_rx);
reset_meas(&gNB->rx_pusch_stats);
reset_meas(&gNB->ulsch_decoding_stats);
reset_meas(&gNB->ulsch_deinterleaving_stats);
reset_meas(&gNB->ulsch_rate_unmatching_stats);
reset_meas(&gNB->ulsch_ldpc_decoding_stats);
reset_meas(&gNB->ulsch_unscrambling_stats);
reset_meas(&gNB->ulsch_channel_estimation_stats);
reset_meas(&gNB->ulsch_llr_stats);
reset_meas(&gNB->ulsch_channel_compensation_stats);
reset_meas(&gNB->ulsch_rbs_extraction_stats);
reset_meas(&UE->ulsch_ldpc_encoding_stats);
reset_meas(&UE->ulsch_rate_matching_stats);
reset_meas(&UE->ulsch_interleaving_stats);
reset_meas(&UE->ulsch_encoding_stats);
clear_pusch_stats(gNB);
for (trial = 0; trial < n_trials; trial++) {
uint8_t round = 0;
crc_status = 1;
errors_decoding = 0;
memset((void*)roundStats,0,50*sizeof(roundStats[0]));
while (round<max_rounds && crc_status) {
round_trials[round][snrRun]++;
ulsch_ue[0]->harq_processes[harq_pid]->round = round;
gNB->ulsch[0][0]->harq_processes[harq_pid]->round = round;
rv_index = nr_rv_round_map[round];
UE_proc.thread_id = 0;
UE_proc.nr_slot_tx = slot;
UE_proc.frame_tx = frame;
UL_tti_req->SFN = frame;
UL_tti_req->Slot = slot;
UL_tti_req->n_pdus = 1;
UL_tti_req->pdus_list[0].pdu_type = NFAPI_NR_UL_CONFIG_PUSCH_PDU_TYPE;
UL_tti_req->pdus_list[0].pdu_size = sizeof(nfapi_nr_pusch_pdu_t);
memset(pusch_pdu,0,sizeof(nfapi_nr_pusch_pdu_t));
int abwp_size = NRRIV2BW(ubwp->bwp_Common->genericParameters.locationAndBandwidth,275);
int abwp_start = NRRIV2PRBOFFSET(ubwp->bwp_Common->genericParameters.locationAndBandwidth,275);
int ibwp_size = ibwps;
int ibwp_start = ibwp_rboffset;
if (msg3_flag == 1) {
if ((ibwp_start < abwp_start) || (ibwp_size > abwp_size))
pusch_pdu->bwp_start = abwp_start;
else
pusch_pdu->bwp_start = ibwp_start;
pusch_pdu->bwp_size = ibwp_size;
start_rb = (ibwp_start - abwp_start);
printf("msg3: ibwp_size %d, abwp_size %d, ibwp_start %d, abwp_start %d\n",
ibwp_size,abwp_size,ibwp_start,abwp_start);
}
else {
pusch_pdu->bwp_start = abwp_start;
pusch_pdu->bwp_size = abwp_size;
}
pusch_pdu->pusch_data.tb_size = TBS/8;
pusch_pdu->pdu_bit_map = pdu_bit_map;
pusch_pdu->rnti = n_rnti;
pusch_pdu->mcs_index = Imcs;
pusch_pdu->mcs_table = mcs_table;
pusch_pdu->target_code_rate = code_rate;
pusch_pdu->qam_mod_order = mod_order;
pusch_pdu->transform_precoding = transform_precoding;
pusch_pdu->data_scrambling_id = *scc->physCellId;
pusch_pdu->nrOfLayers = 1;
pusch_pdu->ul_dmrs_symb_pos = l_prime_mask;
pusch_pdu->dmrs_config_type = dmrs_config_type;
pusch_pdu->ul_dmrs_scrambling_id = *scc->physCellId;
pusch_pdu->scid = 0;
pusch_pdu->dmrs_ports = 1;
pusch_pdu->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
pusch_pdu->resource_alloc = 1;
pusch_pdu->rb_start = start_rb;
pusch_pdu->rb_size = nb_rb;
pusch_pdu->vrb_to_prb_mapping = 0;
pusch_pdu->frequency_hopping = 0;
pusch_pdu->uplink_frequency_shift_7p5khz = 0;
pusch_pdu->start_symbol_index = start_symbol;
pusch_pdu->nr_of_symbols = nb_symb_sch;
pusch_pdu->pusch_data.rv_index = rv_index;
pusch_pdu->pusch_data.harq_process_id = 0;
pusch_pdu->pusch_data.new_data_indicator = trial & 0x1;
pusch_pdu->pusch_data.num_cb = 0;
pusch_pdu->pusch_ptrs.ptrs_time_density = ptrs_time_density;
pusch_pdu->pusch_ptrs.ptrs_freq_density = ptrs_freq_density;
pusch_pdu->pusch_ptrs.ptrs_ports_list = (nfapi_nr_ptrs_ports_t *) malloc(2*sizeof(nfapi_nr_ptrs_ports_t));
pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0;
// if transform precoding is enabled
if (transform_precoding == 0) {
pusch_pdu->dfts_ofdm.low_papr_group_number = *scc->physCellId % 30; // U as defined in 38.211 section 6.4.1.1.1.2
pusch_pdu->dfts_ofdm.low_papr_sequence_number = 0; // V as defined in 38.211 section 6.4.1.1.1.2
pusch_pdu->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
}
// prepare ULSCH/PUSCH reception
nr_schedule_response(Sched_INFO);
// --------- setting parameters for UE --------
scheduled_response.module_id = 0;
scheduled_response.CC_id = 0;
scheduled_response.frame = frame;
scheduled_response.slot = slot;
scheduled_response.thread_id = UE_proc.thread_id;
scheduled_response.dl_config = NULL;
scheduled_response.ul_config = &ul_config;
scheduled_response.tx_request = &tx_req;
// Config UL TX PDU
tx_req.slot = slot;
tx_req.sfn = frame;
// tx_req->tx_config // TbD
tx_req.number_of_pdus = 1;
tx_req.tx_request_body[0].pdu_length = TBS/8;
tx_req.tx_request_body[0].pdu_index = 0;
tx_req.tx_request_body[0].pdu = &ulsch_input_buffer[0];
ul_config.slot = slot;
ul_config.number_pdus = 1;
ul_config.ul_config_list[0].pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
ul_config.ul_config_list[0].pusch_config_pdu.rnti = n_rnti;
ul_config.ul_config_list[0].pusch_config_pdu.pdu_bit_map = pdu_bit_map;
ul_config.ul_config_list[0].pusch_config_pdu.qam_mod_order = mod_order;
ul_config.ul_config_list[0].pusch_config_pdu.rb_size = nb_rb;
ul_config.ul_config_list[0].pusch_config_pdu.rb_start = start_rb;
ul_config.ul_config_list[0].pusch_config_pdu.nr_of_symbols = nb_symb_sch;
ul_config.ul_config_list[0].pusch_config_pdu.start_symbol_index = start_symbol;
ul_config.ul_config_list[0].pusch_config_pdu.ul_dmrs_symb_pos = l_prime_mask;
ul_config.ul_config_list[0].pusch_config_pdu.dmrs_config_type = dmrs_config_type;
ul_config.ul_config_list[0].pusch_config_pdu.mcs_index = Imcs;
ul_config.ul_config_list[0].pusch_config_pdu.mcs_table = mcs_table;
ul_config.ul_config_list[0].pusch_config_pdu.num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
ul_config.ul_config_list[0].pusch_config_pdu.nrOfLayers = precod_nbr_layers;
ul_config.ul_config_list[0].pusch_config_pdu.absolute_delta_PUSCH = 0;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.tb_size = TBS/8;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.new_data_indicator = trial & 0x1;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.rv_index = rv_index;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.harq_process_id = harq_pid;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_time_density = ptrs_time_density;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_freq_density = ptrs_freq_density;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_ports_list = (nfapi_nr_ue_ptrs_ports_t *) malloc(2*sizeof(nfapi_nr_ue_ptrs_ports_t));
ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0;
ul_config.ul_config_list[0].pusch_config_pdu.transform_precoding = transform_precoding;
// if transform precoding is enabled
if (transform_precoding == 0) {
ul_config.ul_config_list[0].pusch_config_pdu.dfts_ofdm.low_papr_group_number = *scc->physCellId % 30;// U as defined in 38.211 section 6.4.1.1.1.2
ul_config.ul_config_list[0].pusch_config_pdu.dfts_ofdm.low_papr_sequence_number = 0;// V as defined in 38.211 section 6.4.1.1.1.2
//ul_config.ul_config_list[0].pusch_config_pdu.pdu_bit_map |= PUSCH_PDU_BITMAP_DFTS_OFDM;
ul_config.ul_config_list[0].pusch_config_pdu.num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
}
//nr_fill_ulsch(gNB,frame,slot,pusch_pdu); // Not needed as its its already filled as apart of "nr_schedule_response(Sched_INFO);"
for (int i=0;i<(TBS/8);i++) ulsch_ue[0]->harq_processes[harq_pid]->a[i]=i&0xff;
if (input_fd == NULL) {
// set FAPI parameters for UE, put them in the scheduled response and call
nr_ue_scheduled_response(&scheduled_response);
/////////////////////////phy_procedures_nr_ue_TX///////////////////////
///////////
phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id);
/* We need to call common sending function to send signal */
LOG_D(PHY, "Sending Uplink data \n");
nr_ue_pusch_common_procedures(UE,
slot,
&UE->frame_parms,1);
if (n_trials==1) {
LOG_M("txsig0.m","txs0", UE->common_vars.txdata[0],frame_parms->samples_per_subframe*10,1,1);
LOG_M("txsig0F.m","txs0F", UE->common_vars.txdataF[0],frame_parms->ofdm_symbol_size*14,1,1);
}
///////////
////////////////////////////////////////////////////
tx_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);
txlev = signal_energy(&UE->common_vars.txdata[0][tx_offset + 5*frame_parms->ofdm_symbol_size + 4*frame_parms->nb_prefix_samples + frame_parms->nb_prefix_samples0],
frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples);
}
else n_trials = 1;
if (input_fd == NULL ) {
sigma_dB = 10 * log10((double)txlev * ((double)frame_parms->ofdm_symbol_size/(12*nb_rb))) - SNR;;
sigma = pow(10,sigma_dB/10);
if(n_trials==1) printf("sigma %f (%f dB), txlev %f (factor %f)\n",sigma,sigma_dB,10*log10((double)txlev),(double)(double)
frame_parms->ofdm_symbol_size/(12*nb_rb));
for (i=0; i<slot_length; i++) {
for (int aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
s_re[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)]);
s_im[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)+1]);
}
}
if (UE2gNB->max_Doppler == 0) {
multipath_channel(UE2gNB, s_re, s_im, r_re, r_im, slot_length, 0, (n_trials==1)?1:0);
} else {
multipath_tv_channel(UE2gNB, s_re, s_im, r_re, r_im, 2*slot_length, 0);
}
for (i=0; i<slot_length; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i) + (delay*2)] = (int16_t)((r_re[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); // convert to fixed point
((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1 + (delay*2)] = (int16_t)((r_im[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0)));
/* Add phase noise if enabled */
if (pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
phase_noise(ts, &((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)],
&((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1]);
}
}
}
} /*End input_fd */
if(pusch_pdu->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
set_ptrs_symb_idx(&ptrsSymPos,
pusch_pdu->nr_of_symbols,
pusch_pdu->start_symbol_index,
1<<ptrs_time_density,
pusch_pdu->ul_dmrs_symb_pos);
ptrsSymbPerSlot = get_ptrs_symbols_in_slot(ptrsSymPos, pusch_pdu->start_symbol_index, pusch_pdu->nr_of_symbols);
ptrsRePerSymb = ((pusch_pdu->rb_size + ptrs_freq_density - 1)/ptrs_freq_density);
printf("[ULSIM] PTRS Symbols in a slot: %2u, RE per Symbol: %3u, RE in a slot %4d\n", ptrsSymbPerSlot,ptrsRePerSymb, ptrsSymbPerSlot*ptrsRePerSymb );
}
////////////////////////////////////////////////////////////
//----------------------------------------------------------
//------------------- gNB phy procedures -------------------
//----------------------------------------------------------
gNB->UL_INFO.rx_ind.number_of_pdus = 0;
gNB->UL_INFO.crc_ind.number_crcs = 0;
phy_procedures_gNB_common_RX(gNB, frame, slot);
ul_proc_error = phy_procedures_gNB_uespec_RX(gNB, frame, slot);
if (n_trials==1 && round==0) {
LOG_M("rxsig0.m","rx0",&gNB->common_vars.rxdata[0][slot_offset],slot_length,1,1);
LOG_M("rxsigF0.m","rxsF0",gNB->common_vars.rxdataF[0]+start_symbol*frame_parms->ofdm_symbol_size,nb_symb_sch*frame_parms->ofdm_symbol_size,1,1);
}
if (n_trials == 1 && round==0) {
#ifdef __AVX2__
int off = ((nb_rb&1) == 1)? 4:0;
#else
int off = 0;
#endif
LOG_M("rxsigF0_ext.m","rxsF0_ext",
&gNB->pusch_vars[0]->rxdataF_ext[0][start_symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_M("chestF0.m","chF0",
&gNB->pusch_vars[0]->ul_ch_estimates[0][start_symbol*frame_parms->ofdm_symbol_size],frame_parms->ofdm_symbol_size,1,1);
LOG_M("chestT0.m","chT0",
&gNB->pusch_vars[0]->ul_ch_estimates_time[0][0],frame_parms->ofdm_symbol_size,1,1);
LOG_M("chestF0_ext.m","chF0_ext",
&gNB->pusch_vars[0]->ul_ch_estimates_ext[0][(start_symbol+1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],
(nb_symb_sch-1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_M("rxsigF0_comp.m","rxsF0_comp",
&gNB->pusch_vars[0]->rxdataF_comp[0][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_M("chmagF0.m","chmF0",
&gNB->pusch_vars[0]->ul_ch_mag[0][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_M("chmagbF0.m","chmbF0",
&gNB->pusch_vars[0]->ul_ch_magb[0][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
if (n_rx == 2) {
LOG_MM("rxsigF0_comp.m","rxsF1_comp",
&gNB->pusch_vars[0]->rxdataF_comp[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_ext.m","rxsF1_ext",
&gNB->pusch_vars[0]->rxdataF_ext[1][start_symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chestF0_ext.m","chF1_ext",
&gNB->pusch_vars[0]->ul_ch_estimates_ext[1][(start_symbol+1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],
(nb_symb_sch-1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagF0.m","chmF1",
&gNB->pusch_vars[0]->ul_ch_mag[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagbF0.m","chmbF1",
&gNB->pusch_vars[0]->ul_ch_magb[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
} else if (n_rx == 4) {
LOG_MM("rxsigF0_comp.m","rxsF1_comp",
&gNB->pusch_vars[0]->rxdataF_comp[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_comp.m","rxsF2_comp",
&gNB->pusch_vars[0]->rxdataF_comp[2][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_comp.m","rxsF3_comp",
&gNB->pusch_vars[0]->rxdataF_comp[3][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_ext.m","rxsF1_ext",
&gNB->pusch_vars[0]->rxdataF_ext[1][start_symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_ext.m","rxsF2_ext",
&gNB->pusch_vars[0]->rxdataF_ext[2][start_symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("rxsigF0_ext.m","rxsF3_ext",
&gNB->pusch_vars[0]->rxdataF_ext[3][start_symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chestF0_ext.m","chF1_ext",
&gNB->pusch_vars[0]->ul_ch_estimates_ext[1][(start_symbol+1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],
(nb_symb_sch-1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chestF0_ext.m","chF2_ext",
&gNB->pusch_vars[0]->ul_ch_estimates_ext[2][(start_symbol+1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],
(nb_symb_sch-1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chestF0_ext.m","chF3_ext",
&gNB->pusch_vars[0]->ul_ch_estimates_ext[3][(start_symbol+1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],
(nb_symb_sch-1)*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagF0.m","chmF1",
&gNB->pusch_vars[0]->ul_ch_mag[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagF0.m","chmF2",
&gNB->pusch_vars[0]->ul_ch_mag[2][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagF0.m","chmF3",
&gNB->pusch_vars[0]->ul_ch_mag[3][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagbF0.m","chmbF1",
&gNB->pusch_vars[0]->ul_ch_magb[1][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagbF0.m","chmbF2",
&gNB->pusch_vars[0]->ul_ch_magb[2][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
LOG_MM("chmagbF0.m","chmbF3",
&gNB->pusch_vars[0]->ul_ch_magb[3][start_symbol*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size))],nb_symb_sch*(off+(NR_NB_SC_PER_RB * pusch_pdu->rb_size)),1,1);
}
LOG_M("rxsigF0_llr.m","rxsF0_llr",
&gNB->pusch_vars[0]->llr[0],(nb_symb_sch-1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size * mod_order,1,0);
}
////////////////////////////////////////////////////////////
if ((gNB->ulsch[0][0]->last_iteration_cnt >=
gNB->ulsch[0][0]->max_ldpc_iterations+1) || ul_proc_error == 1) {
error_flag = 1;
n_errors[round][snrRun]++;
crc_status = 1;
} else {
crc_status = 0;
}
if(n_trials==1) printf("end of round %d rv_index %d\n",round, rv_index);
//----------------------------------------------------------
//----------------- count and print errors -----------------
//----------------------------------------------------------
if ((pusch_pdu->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) && (SNR==snr0) && (trial==0) && (round==0)) {
ptrs_symbols = 0;
for (int i = pusch_pdu->start_symbol_index; i < pusch_pdu->start_symbol_index + pusch_pdu->nr_of_symbols; i++){
ptrs_symbols += ((gNB->pusch_vars[UE_id]->ptrs_symbols) >> i) & 1;
}
/* 2*5*(50/2), for RB = 50,K = 2 for 5 OFDM PTRS symbols */
available_bits -= 2 * ptrs_symbols * ((nb_rb + ptrs_freq_density - 1) /ptrs_freq_density);
printf("[ULSIM][PTRS] Available bits are: %5u, removed PTRS bits are: %5d \n",available_bits, (ptrsSymbPerSlot * ptrsRePerSymb * 2) );
}
for (i = 0; i < available_bits; i++) {
if(((ulsch_ue[0]->g[i] == 0) && (gNB->pusch_vars[UE_id]->llr[i] <= 0)) ||
((ulsch_ue[0]->g[i] == 1) && (gNB->pusch_vars[UE_id]->llr[i] >= 0)))
{
/*if(errors_scrambling == 0)
printf("\x1B[34m" "[frame %d][trial %d]\t1st bit in error in unscrambling = %d\n" "\x1B[0m", frame, trial, i);*/
errors_scrambling[round][snrRun]++;
}
}
round++;
} // round
if (n_trials == 1 && errors_scrambling[0][snrRun] > 0) {
printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in unscrambling = %u\n" "\x1B[0m", frame, trial, errors_scrambling[0][snrRun]);
}
for (i = 0; i < TBS; i++) {
estimated_output_bit[i] = (ulsch_gNB->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7);
test_input_bit[i] = (ulsch_ue[0]->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7);
if (estimated_output_bit[i] != test_input_bit[i]) {
/*if(errors_decoding == 0)
printf("\x1B[34m""[frame %d][trial %d]\t1st bit in error in decoding = %d\n" "\x1B[0m", frame, trial, i);*/
errors_decoding++;
}
}
if (n_trials == 1) {
for (int r=0;r<ulsch_ue[0]->harq_processes[harq_pid]->C;r++)
for (int i=0;i<ulsch_ue[0]->harq_processes[harq_pid]->K>>3;i++) {
if ((ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]) != 0) printf("************");
/*printf("r %d: in[%d] %x, out[%d] %x (%x)\n",r,
i,ulsch_ue[0]->harq_processes[harq_pid]->c[r][i],
i,ulsch_gNB->harq_processes[harq_pid]->c[r][i],
ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]);*/
}
}
if (errors_decoding > 0 && error_flag == 0) {
n_false_positive++;
if (n_trials==1)
printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in decoding = %u\n" "\x1B[0m", frame, trial, errors_decoding);
}
roundStats[snrRun] += ((float)round);
if (!crc_status) effRate[snrRun] += ((double)TBS)/(double)round;
} // trial loop
roundStats[snrRun]/=((float)n_trials);
effRate[snrRun] /= (double)n_trials;
printf("*****************************************\n");
printf("SNR %f: n_errors (%d/%d,%d/%d,%d/%d,%d/%d) (negative CRC), false_positive %d/%d, errors_scrambling (%u/%u,%u/%u,%u/%u,%u/%u\n", SNR, n_errors[0][snrRun], round_trials[0][snrRun],n_errors[1][snrRun], round_trials[1][snrRun],n_errors[2][snrRun], round_trials[2][snrRun],n_errors[3][snrRun], round_trials[3][snrRun], n_false_positive, n_trials, errors_scrambling[0][snrRun],available_bits*n_trials,errors_scrambling[1][snrRun],available_bits*n_trials,errors_scrambling[2][snrRun],available_bits*n_trials,errors_scrambling[3][snrRun],available_bits*n_trials);
printf("\n");
blerStats[0][snrRun] = (double)n_errors[0][snrRun]/round_trials[0][snrRun];
blerStats[1][snrRun] = (double)n_errors[1][snrRun]/round_trials[1][snrRun];
blerStats[2][snrRun] = (double)n_errors[2][snrRun]/round_trials[2][snrRun];
blerStats[3][snrRun] = (double)n_errors[3][snrRun]/round_trials[3][snrRun];
berStats[0][snrRun] = (double)errors_scrambling[0][snrRun]/available_bits/round_trials[0][snrRun];
berStats[1][snrRun] = (double)errors_scrambling[1][snrRun]/available_bits/round_trials[1][snrRun];
berStats[2][snrRun] = (double)errors_scrambling[2][snrRun]/available_bits/round_trials[2][snrRun];
berStats[3][snrRun] = (double)errors_scrambling[3][snrRun]/available_bits/round_trials[3][snrRun];
effTP[snrRun] = effRate[snrRun]/(double)TBS*(double)100;
printf("SNR %f: Channel BLER (%e,%e,%e,%e), Channel BER (%e,%e,%e,%e) Avg round %.2f, Eff Rate %.4f bits/slot, Eff Throughput %.2f, TBS %u bits/slot\n",
SNR,
blerStats[0][snrRun],
blerStats[1][snrRun],
blerStats[2][snrRun],
blerStats[3][snrRun],
berStats[0][snrRun],
berStats[1][snrRun],
berStats[2][snrRun],
berStats[3][snrRun],
roundStats[snrRun],effRate[snrRun],effTP[snrRun],TBS);
FILE *fd=fopen("nr_ulsim.log","w");
dump_pusch_stats(fd,gNB);
printf("*****************************************\n");
printf("\n");
if (print_perf==1) {
printDistribution(&gNB->phy_proc_rx,table_rx,"Total PHY proc rx");
printStatIndent(&gNB->rx_pusch_stats,"RX PUSCH time");
printStatIndent2(&gNB->ulsch_channel_estimation_stats,"ULSCH channel estimation time");
printStatIndent2(&gNB->ulsch_ptrs_processing_stats,"ULSCH PTRS Processing time");
printStatIndent2(&gNB->ulsch_rbs_extraction_stats,"ULSCH rbs extraction time");
printStatIndent2(&gNB->ulsch_channel_compensation_stats,"ULSCH channel compensation time");
printStatIndent2(&gNB->ulsch_mrc_stats,"ULSCH mrc computation");
printStatIndent2(&gNB->ulsch_llr_stats,"ULSCH llr computation");
printStatIndent(&gNB->ulsch_unscrambling_stats,"ULSCH unscrambling");
printStatIndent(&gNB->ulsch_decoding_stats,"ULSCH total decoding time");
printStatIndent(&UE->ulsch_encoding_stats,"ULSCH total encoding time");
printStatIndent2(&UE->ulsch_segmentation_stats,"ULSCH segmentation time");
printStatIndent2(&UE->ulsch_ldpc_encoding_stats,"ULSCH LDPC encoder time");
printStatIndent2(&UE->ulsch_rate_matching_stats,"ULSCH rate-matching time");
printStatIndent2(&UE->ulsch_interleaving_stats,"ULSCH interleaving time");
//printStatIndent2(&gNB->ulsch_deinterleaving_stats,"ULSCH deinterleaving");
//printStatIndent2(&gNB->ulsch_rate_unmatching_stats,"ULSCH rate matching rx");
//printStatIndent2(&gNB->ulsch_ldpc_decoding_stats,"ULSCH ldpc decoding");
printf("\n");
}
if(n_trials==1)
break;
if ((float)n_errors[0][snrRun]/(float)n_trials <= target_error_rate) {
printf("*************\n");
printf("PUSCH test OK\n");
printf("*************\n");
break;
}
snrStats[snrRun] = SNR;
snrRun++;
n_errs = n_errors[0][snrRun];
} // SNR loop
printf("\n");
printf( "Num RB:\t%d\n"
"Num symbols:\t%d\n"
"MCS:\t%d\n"
"DMRS config type:\t%d\n"
"DMRS add pos:\t%d\n"
"PUSCH mapping type:\t%d\n"
"DMRS length:\t%d\n"
"DMRS CDM gr w/o data:\t%d\n",
nb_rb,
nb_symb_sch,
Imcs,
dmrs_config_type,
add_pos,
mapping_type,
length_dmrs,
num_dmrs_cdm_grps_no_data);
LOG_M("ulsimStats.m","SNR",snrStats,snrRun,1,7);
LOG_MM("ulsimStats.m","BLER_round0",blerStats[0],snrRun,1,7);
LOG_MM("ulsimStats.m","BLER_round1",blerStats[1],snrRun,1,7);
LOG_MM("ulsimStats.m","BLER_round2",blerStats[2],snrRun,1,7);
LOG_MM("ulsimStats.m","BLER_round3",blerStats[3],snrRun,1,7);
LOG_MM("ulsimStats.m","BER_round0",berStats[0],snrRun,1,7);
LOG_MM("ulsimStats.m","BER_round1",berStats[1],snrRun,1,7);
LOG_MM("ulsimStats.m","BER_round2",berStats[2],snrRun,1,7);
LOG_MM("ulsimStats.m","BER_round3",berStats[3],snrRun,1,7);
LOG_MM("ulsimStats.m","EffRate",effRate,snrRun,1,7);
LOG_MM("ulsimStats.m","EffTP",effTP,snrRun,1,7);
free(test_input_bit);
free(estimated_output_bit);
if (output_fd)
fclose(output_fd);
if (input_fd)
fclose(input_fd);
if (scg_fd)
fclose(scg_fd);
return (n_errs);
}