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openairinterface5g/openair1/SIMULATION/NR_PHY/dlsim.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (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 <fcntl.h>
#include <math.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <unistd.h>
#include "common/ran_context.h"
#include "common/config/config_userapi.h"
#include "common/utils/LOG/log.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h"
#include "openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_defs.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_extern.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_proto.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_eNB.h"
#include "PHY/MODULATION/modulation_UE.h"
#include "PHY/NR_REFSIG/nr_mod_table.h"
#include "PHY/NR_REFSIG/refsig_defs_ue.h"
#include "PHY/NR_TRANSPORT/nr_transport.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.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 "NR_PHY_INTERFACE/NR_IF_Module.h"
#include "NR_UE_PHY_INTERFACE/NR_IF_Module.h"
#include "RRC/NR/MESSAGES/asn1_msg.h"
#include "openair1/SIMULATION/RF/rf.h"
#include "openair1/SIMULATION/TOOLS/sim.h"
#include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h"
#include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c"
PHY_VARS_gNB *gNB;
PHY_VARS_NR_UE *UE;
RAN_CONTEXT_t RC;
int32_t uplink_frequency_offset[MAX_NUM_CCs][4];
double cpuf;
uint8_t nfapi_mode = 0;
uint16_t NB_UE_INST = 1;
//Dummy Functions
lte_subframe_t subframe_select(LTE_DL_FRAME_PARMS *frame_parms, unsigned char subframe) {return(SF_DL);}
//int rlc_module_init (int enb) {return(0);}
void pdcp_layer_init (void) {}
boolean_t pdcp_data_ind( const protocol_ctxt_t *const ctxt_pP, const srb_flag_t srb_flagP, const MBMS_flag_t MBMS_flagP, const rb_id_t rb_idP,
const sdu_size_t sdu_buffer_sizeP, mem_block_t *const sdu_buffer_pP)
{return (0);}
int rrc_init_nr_global_param (void) {return(0);}
void config_common(int Mod_idP,int CC_idP,int Nid_cell,int nr_bandP,uint64_t SSB_positions,uint16_t ssb_periodicity,uint64_t dl_CarrierFreqP,uint32_t dl_BandwidthP);
int8_t nr_mac_rrc_data_ind_ue(const module_id_t module_id, const int CC_id, const uint8_t gNB_index,
const int8_t channel, const uint8_t* pduP, const sdu_size_t pdu_len) {return(0);}
uint64_t get_softmodem_optmask(void) {return 0;}
void nr_ip_over_LTE_DRB_preconfiguration(void){}
// needed for some functions
openair0_config_t openair0_cfg[MAX_CARDS];
int main(int argc, char **argv)
{
char c;
int i,aa;//,l;
double sigma2, sigma2_dB=10, SNR, snr0=-2.0, snr1=2.0;
uint8_t snr1set=0;
int **txdata;
double **s_re,**s_im,**r_re,**r_im;
//double iqim = 0.0;
//unsigned char pbch_pdu[6];
// int sync_pos, sync_pos_slot;
// FILE *rx_frame_file;
FILE *output_fd = NULL;
//uint8_t write_output_file=0;
//int result;
//int freq_offset;
// int subframe_offset;
// char fname[40], vname[40];
int trial, n_trials = 1, n_errors = 0, n_false_positive = 0;
//int n_errors2, n_alamouti;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
uint64_t SSB_positions=0x01;
channel_desc_t *gNB2UE;
//uint32_t nsymb,tx_lev,tx_lev1 = 0,tx_lev2 = 0;
//uint8_t extended_prefix_flag=0;
//int8_t interf1=-21,interf2=-21;
FILE *input_fd=NULL,*pbch_file_fd=NULL;
//char input_val_str[50],input_val_str2[50];
//uint8_t frame_mod4,num_pdcch_symbols = 0;
SCM_t channel_model=AWGN;//Rayleigh1_anticorr;
//double pbch_sinr;
//int pbch_tx_ant;
int N_RB_DL=106,mu=1;
nfapi_nr_dl_config_dlsch_pdu_rel15_t dlsch_config;
dlsch_config.start_prb = 0;
dlsch_config.n_prb = 50;
dlsch_config.start_symbol = 2;
dlsch_config.nb_symbols = 9;
dlsch_config.mcs_idx = 9;
uint16_t ssb_periodicity = 10;
//unsigned char frame_type = 0;
unsigned char pbch_phase = 0;
int frame=0,slot=1;
int frame_length_complex_samples;
int frame_length_complex_samples_no_prefix;
int slot_length_complex_samples_no_prefix;
NR_DL_FRAME_PARMS *frame_parms;
nfapi_nr_config_request_t *gNB_config;
UE_nr_rxtx_proc_t UE_proc;
NR_Sched_Rsp_t Sched_INFO;
gNB_MAC_INST *gNB_mac;
NR_UE_MAC_INST_t *UE_mac;
int ret;
int run_initial_sync=0;
int do_pdcch_flag=1;
uint16_t cset_offset = 0;
int loglvl=OAILOG_WARNING;
float target_error_rate = 0.01;
cpuf = get_cpu_freq_GHz();
if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0) {
exit_fun("[NR_DLSIM] Error, configuration module init failed\n");
}
randominit(0);
while ((c = getopt (argc, argv, "f:hA:pf:g:i:j:n:s:S:t:x:y:z:M:N:F:GR:dP:IL:o:a:b:c:j:e:")) != -1) {
switch (c) {
/*case 'f':
write_output_file=1;
output_fd = fopen(optarg,"w");
if (output_fd==NULL) {
printf("Error opening %s\n",optarg);
exit(-1);
}
break;*/
/*case 'd':
frame_type = 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;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
break;
/*case 'i':
interf1=atoi(optarg);
break;
case 'j':
interf2=atoi(optarg);
break;*/
case 'n':
n_trials = atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
printf("Setting SNR0 to %f\n",snr0);
break;
case 'S':
snr1 = atof(optarg);
snr1set=1;
printf("Setting SNR1 to %f\n",snr1);
break;
/*
case 't':
Td= atof(optarg);
break;
*/
/*case 'p':
extended_prefix_flag=1;
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);
if ((transmission_mode!=1) &&
(transmission_mode!=2) &&
(transmission_mode!=6)) {
printf("Unsupported transmission mode %d\n",transmission_mode);
exit(-1);
}
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>2)) {
printf("Unsupported number of rx antennas %d\n",n_rx);
exit(-1);
}
break;
case 'M':
SSB_positions = atoi(optarg);
break;
case 'N':
Nid_cell = atoi(optarg);
break;
case 'R':
N_RB_DL = atoi(optarg);
break;
case 'F':
input_fd = fopen(optarg,"r");
if (input_fd==NULL) {
printf("Problem with filename %s\n",optarg);
exit(-1);
}
break;
case 'P':
pbch_phase = atoi(optarg);
if (pbch_phase>3)
printf("Illegal PBCH phase (0-3) got %d\n",pbch_phase);
break;
case 'I':
run_initial_sync=1;
target_error_rate=0.1;
break;
case 'L':
loglvl = atoi(optarg);
break;
case 'o':
cset_offset = atoi(optarg);
break;
case 'a':
dlsch_config.start_prb = atoi(optarg);
break;
case 'b':
dlsch_config.n_prb = atoi(optarg);
break;
case 'c':
dlsch_config.start_symbol = atoi(optarg);
break;
case 'j':
dlsch_config.nb_symbols = atoi(optarg);
break;
case 'e':
dlsch_config.mcs_idx = atoi(optarg);
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\n",
argv[0]);
printf("-h This message\n");
//printf("-p Use extended prefix mode\n");
//printf("-d Use TDD\n");
printf("-n Number of frames to simulate\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-t Delay spread for multipath channel\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used in eNB\n");
printf("-z Number of RX antennas used in UE\n");
//printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
//printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-M Multiple SSB positions in burst\n");
printf("-N Nid_cell\n");
printf("-R N_RB_DL\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
//printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
//printf("-f Output filename (.txt format) for Pe/SNR results\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
printf("-o CORESET offset\n");
printf("-a Start PRB for PDSCH\n");
printf("-b Number of PRB for PDSCH\n");
printf("-c Start symbol for PDSCH (fixed for now)\n");
printf("-j Number of symbols for PDSCH (fixed for now)\n");
printf("-e MSC index\n");
exit (-1);
break;
}
}
logInit();
set_glog(loglvl);
T_stdout = 1;
if (snr1set==0)
snr1 = snr0+10;
printf("Initializing gNodeB for mu %d, N_RB_DL %d\n",mu,N_RB_DL);
RC.gNB = (PHY_VARS_gNB***) malloc(sizeof(PHY_VARS_gNB **));
RC.gNB[0] = (PHY_VARS_gNB**) malloc(sizeof(PHY_VARS_gNB *));
RC.gNB[0][0] = malloc(sizeof(PHY_VARS_gNB));
memset(RC.gNB[0][0],0,sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0][0];
gNB_config = &gNB->gNB_config;
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx;
frame_parms->N_RB_DL = N_RB_DL;
frame_parms->N_RB_UL = N_RB_DL;
// stub to configure frame_parms
nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,Nid_cell,SSB_positions);
// call MAC to configure common parameters
phy_init_nr_gNB(gNB,0,0);
mac_top_init_gNB();
double fs,bw;
if (mu == 1 && N_RB_DL == 217) {
fs = 122.88e6;
bw = 80e6;
}
else if (mu == 1 && N_RB_DL == 245) {
fs = 122.88e6;
bw = 90e6;
}
else if (mu == 1 && N_RB_DL == 273) {
fs = 122.88e6;
bw = 100e6;
}
else if (mu == 1 && N_RB_DL == 106) {
fs = 61.44e6;
bw = 40e6;
}
else AssertFatal(1==0,"Unsupported numerology for mu %d, N_RB %d\n",mu, N_RB_DL);
gNB2UE = new_channel_desc_scm(n_tx,
n_rx,
channel_model,
fs,
bw,
0,
0,
0);
if (gNB2UE==NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
slot_length_complex_samples_no_prefix = frame_parms->samples_per_slot_wCP;
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
r_re = malloc(2*sizeof(double*));
r_im = malloc(2*sizeof(double*));
txdata = malloc(2*sizeof(int*));
for (i=0; i<2; i++) {
s_re[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(s_re[i],frame_length_complex_samples*sizeof(double));
s_im[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(s_im[i],frame_length_complex_samples*sizeof(double));
r_re[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(r_re[i],frame_length_complex_samples*sizeof(double));
r_im[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(r_im[i],frame_length_complex_samples*sizeof(double));
printf("Allocating %d samples for txdata\n",frame_length_complex_samples);
txdata[i] = malloc(frame_length_complex_samples*sizeof(int));
bzero(txdata[i],frame_length_complex_samples*sizeof(int));
}
if (pbch_file_fd!=NULL) {
load_pbch_desc(pbch_file_fd);
}
//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));
if (run_initial_sync==1) UE->is_synchronized = 0;
else {UE->is_synchronized = 1; UE->UE_mode[0]=PUSCH;}
UE->perfect_ce = 0;
for (i=0;i<10;i++) UE->current_thread_id[i] = 0;
if (init_nr_ue_signal(UE, 1, 0) != 0)
{
printf("Error at UE NR initialisation\n");
exit(-1);
}
init_nr_ue_transport(UE,0);
nr_gold_pbch(UE);
nr_gold_pdcch(UE,0,2);
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 = RC.nrmac[0];
config_common(0,0,Nid_cell,78,SSB_positions,ssb_periodicity,(uint64_t)3640000000L,N_RB_DL);
config_nr_mib(0,0,1,kHz30,0,0,0,0,0);
nr_l2_init_ue();
UE_mac = get_mac_inst(0);
UE->pdcch_vars[0][0]->crnti = 0x1234;
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 = dummy_nr_ue_ul_indication;
UE_mac->if_module = nr_ue_if_module_init(0);
unsigned int available_bits;
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
unsigned int errors_bit = 0;
uint32_t errors_scrambling = 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);
uint16_t rb_offset_count = cset_offset/6;
set_cset_offset(rb_offset_count);
// generate signal
if (input_fd==NULL) {
gNB->pbch_configured = 1;
for (int i=0;i<4;i++) gNB->pbch_pdu[i]=i+1;
nr_schedule_uss_dlsch_phytest(0,frame,slot,&dlsch_config);
Sched_INFO.module_id = 0;
Sched_INFO.CC_id = 0;
Sched_INFO.frame = frame;
Sched_INFO.slot = slot;
Sched_INFO.DL_req = &gNB_mac->DL_req[0];
Sched_INFO.UL_tti_req = &gNB_mac->UL_tti_req[0];
Sched_INFO.HI_DCI0_req = NULL;
Sched_INFO.TX_req = &gNB_mac->TX_req[0];
nr_schedule_response(&Sched_INFO);
phy_procedures_gNB_TX(gNB,frame,slot,0);
//nr_common_signal_procedures (gNB,frame,subframe);
int txdataF_offset = (slot%2) * frame_parms->samples_per_slot_wCP;
LOG_M("txsigF0.m","txsF0", gNB->common_vars.txdataF[0],frame_length_complex_samples_no_prefix,1,1);
if (gNB->frame_parms.nb_antennas_tx>1)
LOG_M("txsigF1.m","txsF1", gNB->common_vars.txdataF[1],frame_length_complex_samples_no_prefix,1,1);
int tx_offset = slot*frame_parms->samples_per_slot;
printf("samples_per_slot_wCP = %d\n", frame_parms->samples_per_slot_wCP);
//TODO: loop over slots
for (aa=0; aa<gNB->frame_parms.nb_antennas_tx; aa++) {
if (gNB_config->subframe_config.dl_cyclic_prefix_type.value == 1) {
PHY_ofdm_mod(&gNB->common_vars.txdataF[aa][txdataF_offset],
&txdata[aa][tx_offset],
frame_parms->ofdm_symbol_size,
12,
frame_parms->nb_prefix_samples,
CYCLIC_PREFIX);
} else {
nr_normal_prefix_mod(&gNB->common_vars.txdataF[aa][txdataF_offset],
&txdata[aa][tx_offset],
14,
frame_parms);
}
}
} else {
printf("Reading %d samples from file to antenna buffer %d\n",frame_length_complex_samples,0);
if (fread(txdata[0],
sizeof(int32_t),
frame_length_complex_samples,
input_fd) != frame_length_complex_samples) {
printf("error reading from file\n");
//exit(-1);
}
}
LOG_M("txsig0.m","txs0", txdata[0],frame_length_complex_samples,1,1);
if (gNB->frame_parms.nb_antennas_tx>1)
LOG_M("txsig1.m","txs1", txdata[1],frame_length_complex_samples,1,1);
if (output_fd)
fwrite(txdata[0],sizeof(int32_t),frame_length_complex_samples,output_fd);
int txlev = signal_energy(&txdata[0][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);
// printf("txlev %d (%f)\n",txlev,10*log10(txlev));
for (i=0; i<frame_length_complex_samples; i++) {
for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
r_re[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)]);
r_im[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]);
}
}
//Configure UE
rrc_gNB_carrier_data_t carrier;
uint32_t pdcch_ConfigSIB1 = 0;
uint32_t ssb_SubcarrierOffset = 0;
carrier.MIB = (uint8_t*) malloc(4);
carrier.sizeof_MIB = do_MIB_NR(&carrier,0,ssb_SubcarrierOffset,pdcch_ConfigSIB1,30,2);
nr_rrc_mac_config_req_ue(0,0,0,carrier.mib.message.choice.mib,NULL,NULL,NULL);
// Initial bandwidth part configuration -- full carrier bandwidth
UE_mac->initial_bwp_dl.bwp_id = 0;
UE_mac->initial_bwp_dl.location = 0;
UE_mac->initial_bwp_dl.scs = UE->frame_parms.subcarrier_spacing;
UE_mac->initial_bwp_dl.N_RB = UE->frame_parms.N_RB_DL;
UE_mac->initial_bwp_dl.cyclic_prefix = UE->frame_parms.Ncp;
fapi_nr_dl_config_request_t *dl_config = &UE_mac->dl_config_request;
// Type0 PDCCH search space
dl_config->number_pdus = 1;
dl_config->dl_config_list[0].pdu_type = FAPI_NR_DL_CONFIG_TYPE_DCI;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.rnti = 0x1234;
uint64_t mask = 0x0;
uint16_t num_rbs=24;
uint16_t rb_offset=gNB->pdcch_vars.dci_alloc[0].pdcch_params.rb_offset;
uint16_t cell_id=0;
uint16_t num_symbols=2;
for(i=0; i<(num_rbs/6); ++i){ // 38.331 Each bit corresponds a group of 6 RBs
mask = mask >> 1;
mask = mask | 0x100000000000;
}
uint16_t UE_rb_offset_count = rb_offset/6;
mask = mask >> UE_rb_offset_count;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.frequency_domain_resource = mask;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.rb_offset = rb_offset; // additional parameter other than coreset
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.duration = num_symbols;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_mapping_type =CCE_REG_MAPPING_TYPE_NON_INTERLEAVED;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_reg_bundle_size = 0; // L 38.211 7.3.2.2
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_interleaver_size = 0; // R 38.211 7.3.2.2
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_shift_index = cell_id;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.precoder_granularity = PRECODER_GRANULARITY_SAME_AS_REG_BUNDLE;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.pdcch_dmrs_scrambling_id = cell_id;
uint32_t number_of_search_space_per_slot=1;
uint32_t first_symbol_index=0;
uint32_t search_space_duration=0; // element of search space
uint32_t coreset_duration; // element of coreset
coreset_duration = num_symbols * number_of_search_space_per_slot;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[0] = table_38213_10_1_1_c2[0];
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[1] = table_38213_10_1_1_c2[1];
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[2] = table_38213_10_1_1_c2[2]; // CCE aggregation level = 4
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[3] = table_38213_10_1_1_c2[3]; // CCE aggregation level = 8
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[4] = table_38213_10_1_1_c2[4]; // CCE aggregation level = 16
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.duration = search_space_duration;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.monitoring_symbols_within_slot = (0x3fff << first_symbol_index) & (0x3fff >> (14-coreset_duration-first_symbol_index)) & 0x3fff;
dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.N_RB_BWP = N_RB_DL;
UE_mac->scheduled_response.dl_config = dl_config;
UE_mac->scheduled_response.ul_config = NULL;
UE_mac->scheduled_response.tx_request = NULL;
UE_mac->scheduled_response.module_id = 0;
UE_mac->scheduled_response.CC_id = 0;
UE_mac->scheduled_response.frame = frame;
UE_mac->scheduled_response.slot = slot;
UE_mac->phy_config.config_req.pbch_config.system_frame_number = frame;
UE_mac->phy_config.config_req.pbch_config.ssb_index = 0;
UE_mac->phy_config.config_req.pbch_config.half_frame_bit = 0;
nr_ue_phy_config_request(&UE_mac->phy_config);
for (SNR = snr0; SNR < snr1; SNR += .2) {
n_errors = 0;
//n_errors2 = 0;
//n_alamouti = 0;
n_false_positive = 0;
for (trial = 0; trial < n_trials; trial++) {
errors_bit = 0;
//multipath channel
//multipath_channel(gNB2UE,s_re,s_im,r_re,r_im,frame_length_complex_samples,0);
//AWGN
sigma2_dB = 10 * log10((double)txlev) - SNR;
sigma2 = pow(10, sigma2_dB/10);
// printf("sigma2 %f (%f dB)\n",sigma2,sigma2_dB);
for (i=0; i<frame_length_complex_samples; i++) {
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
((short*) UE->common_vars.rxdata[aa])[2*i] = (short) ((r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) UE->common_vars.rxdata[aa])[2*i+1] = (short) ((r_im[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
}
}
if (n_trials == 1) {
LOG_M("rxsig0.m","rxs0", UE->common_vars.rxdata[0], frame_length_complex_samples, 1, 1);
if (UE->frame_parms.nb_antennas_rx>1)
LOG_M("rxsig1.m","rxs1", UE->common_vars.rxdata[1], frame_length_complex_samples, 1, 1);
}
if (UE->is_synchronized == 0) {
UE_nr_rxtx_proc_t proc = {0};
ret = nr_initial_sync(&proc, UE, normal_txrx, 1);
printf("nr_initial_sync1 returns %d\n", ret);
if (ret < 0)
n_errors++;
} else { // UE->is_synchronized != 0
UE->rx_offset = 0;
UE_proc.frame_rx = frame;
UE_proc.nr_tti_rx = slot;
UE_proc.subframe_rx = slot;
nr_ue_scheduled_response(&UE_mac->scheduled_response);
printf("Running phy procedures UE RX %d.%d\n", frame, slot);
phy_procedures_nrUE_RX(UE,
&UE_proc,
0,
do_pdcch_flag,
normal_txrx);
if (n_trials == 1) {
LOG_M("rxsigF0.m","rxsF0", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[0], slot_length_complex_samples_no_prefix, 1, 1);
if (UE->frame_parms.nb_antennas_rx > 1)
LOG_M("rxsigF1.m","rxsF1", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[1], slot_length_complex_samples_no_prefix, 1, 1);
}
if (UE->dlsch[UE->current_thread_id[slot]][0][0]->last_iteration_cnt >=
UE->dlsch[UE->current_thread_id[slot]][0][0]->max_ldpc_iterations+1)
n_errors++;
//----------------------------------------------------------
//---------------------- count errors ----------------------
//----------------------------------------------------------
NR_gNB_DLSCH_t *gNB_dlsch = gNB->dlsch[0][0];
NR_UE_DLSCH_t *dlsch0 = UE->dlsch[UE->current_thread_id[UE_proc.nr_tti_rx]][0][0];
int harq_pid = dlsch0->current_harq_pid;
NR_DL_UE_HARQ_t *UE_harq_process = dlsch0->harq_processes[harq_pid];
NR_UE_PDSCH **pdsch_vars = UE->pdsch_vars[UE->current_thread_id[UE_proc.nr_tti_rx]];
int16_t *UE_llr = pdsch_vars[0]->llr[0];
nfapi_nr_dl_config_dlsch_pdu_rel15_t rel15 = gNB_dlsch->harq_processes[harq_pid]->dlsch_pdu.dlsch_pdu_rel15;
uint32_t TBS = rel15.transport_block_size;
uint16_t length_dmrs = 1;
uint16_t nb_rb = rel15.n_prb;
uint8_t nb_re_dmrs = rel15.nb_re_dmrs;
uint8_t mod_order = rel15.modulation_order;
uint8_t nb_symb_sch = rel15.nb_symbols;
available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, mod_order, rel15.nb_layers);
printf("\n");
printf("available_bits = %u\n", available_bits);
for (i = 0; i < available_bits; i++) {
if(((gNB_dlsch->harq_processes[harq_pid]->f[i] == 0) && (UE_llr[i] <= 0)) ||
((gNB_dlsch->harq_processes[harq_pid]->f[i] == 1) && (UE_llr[i] >= 0)))
{
if(errors_scrambling == 0) {
printf("\n");
printf("First bit in error in unscrambling = %d\n",i);
}
errors_scrambling++;
}
}
for (i = 0; i < TBS; i++) {
estimated_output_bit[i] = (UE_harq_process->b[i/8] & (1 << (i & 7))) >> (i & 7);
test_input_bit[i] = (gNB_dlsch->harq_processes[harq_pid]->b[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments
if (estimated_output_bit[i] != test_input_bit[i]) {
if(errors_bit == 0)
printf("First bit in error in decoding = %d\n",i);
errors_bit++;
}
}
////////////////////////////////////////////////////////////
if (errors_scrambling > 0) {
if (n_trials == 1)
printf("errors_scrambling = %u (trial %d)\n", errors_scrambling, trial);
}
if (errors_bit > 0) {
n_false_positive++;
if (n_trials == 1)
printf("errors_bit = %u (trial %d)\n", errors_bit, trial);
}
printf("\n");
} // if (UE->is_synchronized == 0)
} // noise trials
printf("*****************************************\n");
printf("SNR %f, (false positive %f)\n", SNR,
(float) n_errors / (float) n_trials);
printf("*****************************************\n");
printf("\n");
printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR, n_errors, n_trials);
printf("\n");
if ((float)n_errors/(float)n_trials <= target_error_rate) {
printf("PDSCH test OK\n");
break;
}
} // NSR
for (i = 0; i < 2; i++) {
free(s_re[i]);
free(s_im[i]);
free(r_re[i]);
free(r_im[i]);
free(txdata[i]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
free(txdata);
free(test_input_bit);
free(estimated_output_bit);
if (output_fd)
fclose(output_fd);
if (input_fd)
fclose(input_fd);
return(n_errors);
}
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