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openairinterface5g/openair1/SIMULATION/NR_PHY/ulsim.c
rakesh mundlamuri 5adf4b2110 Merge branch 'ul_mu_mimo_groups' into 'develop' 
Draft: Introduce group based processing for 5G uplink MU-MIMO and a MU-MIMO physical simulator

See merge request oai/openairinterface5g!4093
2026-06-30 00:42:22 +00:00

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/*
* SPDX-License-Identifier: LicenseRef-CSSL-1.0
*/
#include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <bits/getopt_core.h>
#include "common/utils/nr/nr_common.h"
#include "common/utils/var_array.h"
#define inMicroS(a) (((double)(a))/(get_cpu_freq_GHz()*1000.0))
#include "SIMULATION/LTE_PHY/common_sim.h"
#include "common/utils/assertions.h"
#include "executables/softmodem-common.h"
#include "NR_BCCH-BCH-Message.h"
#include "NR_IF_Module.h"
#include "NR_MAC_COMMON/nr_mac.h"
#include "NR_MAC_COMMON/nr_mac_common.h"
#include "NR_MAC_UE/mac_defs.h"
#include "NR_MAC_gNB/nr_mac_gNB.h"
#include "NR_PHY_INTERFACE/NR_IF_Module.h"
#include "NR_ReconfigurationWithSync.h"
#include "NR_ServingCellConfig.h"
#include "NR_UE-NR-Capability.h"
#include "PHY/CODING/nrLDPC_coding/nrLDPC_coding_interface.h"
#include "PHY/INIT/nr_phy_init.h"
#include "PHY/MODULATION/nr_modulation.h"
#include "PHY/NR_REFSIG/dmrs_nr.h"
#include "PHY/NR_REFSIG/ptrs_nr.h"
#include "PHY/NR_REFSIG/ul_ref_seq_nr.h"
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "PHY/NR_TRANSPORT/nr_ulsch.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_ue.h"
#include "PHY/TOOLS/tools_defs.h"
#include "PHY/defs_RU.h"
#include "PHY/defs_gNB.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/defs_nr_common.h"
#include "PHY/impl_defs_nr.h"
#include "PHY/phy_vars_nr_ue.h"
#include "SCHED_NR/sched_nr.h"
#include "SCHED_NR_UE/defs.h"
#include "SCHED_NR_UE/fapi_nr_ue_l1.h"
#include "asn_internal.h"
#include "assertions.h"
#include "common/config/config_load_configmodule.h"
#include "common/ngran_types.h"
#include "common/openairinterface5g_limits.h"
#include "common/ran_context.h"
#include "common/utils/LOG/log.h"
#include "common/utils/bits.h"
#include "common/utils/T/T.h"
#include "common/utils/nr/nr_common.h"
#include "common/utils/threadPool/thread-pool.h"
#include "common/utils/var_array.h"
#include "common_lib.h"
#include "e1ap_messages_types.h"
#include "executables/nr-uesoftmodem.h"
#include "fapi_nr_ue_constants.h"
#include "fapi_nr_ue_interface.h"
#include "nfapi_interface.h"
#include "nfapi_nr_interface_scf.h"
#include "nr_ue_phy_meas.h"
#include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h"
#include "openair1/SIMULATION/TOOLS/sim.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h"
#include "openair2/LAYER2/NR_MAC_gNB/nr_radio_config.h"
#include "time_meas.h"
#include "utils.h"
#ifdef CHANNEL_SIM_CUDA
#include <cuda.h>
#include <cuda_runtime.h>
#include "SIMULATION/TOOLS/oai_cuda.h"
#endif
//#define DEBUG_ULSIM
const char *__asan_default_options()
{
/* don't do leak checking in nr_ulsim, not finished yet */
return "detect_leaks=0";
}
PHY_VARS_gNB *gNB;
RAN_CONTEXT_t RC;
char *uecap_file;
int64_t uplink_frequency_offset[MAX_NUM_CCs][4];
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;
// NTN cellSpecificKoffset-r17, but in slots for DL SCS
unsigned int NTN_UE_Koffset = 0;
void nr_derive_key_ng_ran_star(uint16_t pci, uint64_t nr_arfcn_dl, const uint8_t key[32], uint8_t *key_ng_ran_star)
{
}
/* this is a hack, but necessary for E2 agent. We compile in all of RRC
* (because of CMakeLists.txt), but we don't need it (only nr_radio_config.c).
* however, if E2 agent is defined, the following functions are used in
* rrc_gNB.c, but defined in RAN functions. In order to avoid pulling this in
* here as well, only provide a prototype (and abort if they are ever called). */
void signal_rrc_msg(void /*const nr_rrc_class_e nr_channel, const uint32_t rrc_msg_id, const byte_array_t rrc_ba*/ ) { abort(); }
void signal_rrc_state_changed_to(void /* const gNB_RRC_UE_t *rrc_ue_context, const rrc_state_e2sm_rc_e rrc_state */) { abort(); }
void signal_ue_id(void /* const gNB_RRC_UE_t *rrc_ue_context, const uint16_t class, const uint32_t msg_id */) { abort(); }
void e1_bearer_context_setup(const e1ap_bearer_setup_req_t *req) { abort(); }
void e1_bearer_context_modif(const e1ap_bearer_mod_req_t *req) { abort(); }
void e1_bearer_release_cmd(const e1ap_bearer_release_cmd_t *cmd) { abort(); }
int8_t nr_rrc_RA_succeeded(const module_id_t mod_id, const uint8_t gNB_index) {
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;
}
void nr_derive_key(int alg_type, uint8_t alg_id, const uint8_t key[32], uint8_t out[16])
{
(void)alg_type;
}
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];
channel_desc_t *UE2gNB[MAX_MOBILES_PER_GNB][NUMBER_OF_gNB_MAX];
static void copy_bytes_to_packed_bits(const uint8_t *in, const uint32_t num_bits, const bool is_ulsch, uint8_t *out)
{
if (is_ulsch) { // MATLAB computes CRC for input of MSB first
for (uint_fast32_t b = 0; b < num_bits; b++) {
out[b / 8] |= ((in[b] & 1) << (7 - (b % 8)));
}
} else {
for (uint_fast32_t b = 0; b < num_bits; b++) {
out[b / 8] |= (in[b] << (b % 8));
}
}
}
static void prepare_ue_pusch_pdu_from_matlab_vector(const bool uci_on_pusch,
FILE *vect_file,
nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu,
uint8_t *cw_buf)
{
if (!uci_on_pusch)
return;
if (vect_file == NULL)
return;
struct vect_vars {
uint32_t A;
uint32_t oack;
uint32_t ocsi1;
uint32_t ocsi2;
uint32_t cwlen;
uint32_t cwlen_scr;
} __attribute__((packed));
struct vect_vars var = {0};
if (1 != fread(&var, sizeof(var), 1, vect_file)) {
printf("Error reading from matlab vector file\n");
exit(-1);
}
const uint16_t buff_len = var.A + var.oack + var.ocsi1 + var.ocsi2;
uint8_t vec_bits[buff_len];
memset(vec_bits, 0, sizeof(vect_file));
uint8_t *p_vec_bits = vec_bits;
if (var.A != fread(p_vec_bits, sizeof(uint8_t), var.A, vect_file)) {
printf("Error reading ULSCH bits from file\n");
exit(-1);
}
p_vec_bits += var.A;
if (var.oack != fread(p_vec_bits, sizeof(uint8_t), var.oack, vect_file)) {
printf("Error reading ACK bits from file\n");
exit(-1);
}
p_vec_bits += var.oack;
if (var.ocsi1 != fread(p_vec_bits, sizeof(uint8_t), var.ocsi1, vect_file)) {
printf("Error reading CSI1 bits from file\n");
exit(-1);
}
p_vec_bits += var.ocsi1;
if (var.ocsi2 != fread(p_vec_bits, sizeof(uint8_t), var.ocsi2, vect_file)) {
printf("Error reading CSI2 bits from file\n");
exit(-1);
}
if (var.cwlen != fread(cw_buf, sizeof(uint8_t), var.cwlen, vect_file)) {
printf("Error reading cw bits from file\n");
exit(-1);
}
memset(cw_buf, 0, var.cwlen_scr);
if (var.cwlen_scr != fread(cw_buf, sizeof(uint8_t), var.cwlen_scr, vect_file)) {
printf("Error reading cw bits from file\n");
exit(-1);
}
uint16_t tb_buf_size = (var.A + 7) / 8;
pusch_config_pdu->pusch_data.tb_size = tb_buf_size;
pusch_config_pdu->tx_request_body.pdu_length = tb_buf_size;
uint8_t *pb = pusch_config_pdu->tx_request_body.fapiTxPdu;
memset(pb, 0, tb_buf_size);
p_vec_bits = vec_bits;
copy_bytes_to_packed_bits(p_vec_bits, var.A, true, pb);
pusch_config_pdu->pusch_uci.harq_ack_bit_length = var.oack;
pb = (uint8_t *)&pusch_config_pdu->pusch_uci.harq_payload;
memset(pb, 0, sizeof(pusch_config_pdu->pusch_uci.harq_payload));
p_vec_bits += var.A;
copy_bytes_to_packed_bits(p_vec_bits, var.oack, false, pb);
pusch_config_pdu->pusch_uci.csi_payload.p1_bits = var.ocsi1;
pb = (uint8_t *)&pusch_config_pdu->pusch_uci.csi_payload.part1_payload;
memset(pb, 0, sizeof(pusch_config_pdu->pusch_uci.csi_payload.part1_payload));
p_vec_bits += var.oack;
copy_bytes_to_packed_bits(p_vec_bits, var.ocsi1, false, pb);
pusch_config_pdu->pusch_uci.csi_payload.p2_bits = var.ocsi2;
pb = (uint8_t *)&pusch_config_pdu->pusch_uci.csi_payload.part2_payload;
memset(pb, 0, sizeof(pusch_config_pdu->pusch_uci.csi_payload.part2_payload));
p_vec_bits += var.ocsi1;
copy_bytes_to_packed_bits(p_vec_bits, var.ocsi2, false, pb);
}
configmodule_interface_t *uniqCfg = NULL;
int main(int argc, char *argv[])
{
stop = false;
__attribute__((unused)) struct sigaction oldaction;
sigaction(SIGINT, &sigint_action, &oldaction);
FILE *csv_file = NULL;
char *filename_csv = NULL;
int i;
double SNR, snr0 = -2.0, snr1 = 2.0;
double snr_step = .2;
uint8_t snr1set = 0;
int slot = 8, frame = 1;
int do_SRS = 0;
FILE *output_fd = NULL;
float **s_interleaved, **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;
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;
corr_level_t corr_level = CORR_LEVEL_LOW;
uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1;
uint8_t length_dmrs = pusch_len1;
// unsigned char frame_type = 0;
int loglvl = OAILOG_WARNING;
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 tx_offset;
double txlev_sum = 0;
int start_rb = 0;
int UE_id = 0;
int print_perf = 0;
cpuf = get_cpu_freq_GHz();
int msg3_flag = 0;
bool uci_on_pusch = false;
bool no_phase_pre_comp = false;
int rv_index = 0;
float roundStats;
double effRate;
double effTP;
float eff_tp_check = 100;
uint8_t max_rounds = 4;
int chest_type[2] = {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
int dmrs_arg[4] = {-1,-1,-1,-1};// Invalid values
uint16_t ptrsSymPos = 0;
uint16_t ptrsSymbPerSlot = 0;
uint16_t ptrsRePerSymb = 0;
uint8_t transform_precoding = transformPrecoder_disabled; // 0 - ENABLE, 1 - DISABLE
uint8_t num_dmrs_cdm_grps_no_data = 1;
uint8_t mcs_table = 0;
int ilbrm = 0;
UE_nr_rxtx_proc_t UE_proc;
FILE *uci_ulsch_matlab_vec = NULL;
int file_offset = 0;
double DS_TDL = .03;
int ibwps=24;
int ibwp_rboffset=41;
int params_from_file = 0;
int threadCnt=0;
int max_ldpc_iterations = 5;
int num_antennas_per_thread = 1;
uint32_t log_format = 0;
int threequarter_fs = 0;
if ((uniqCfg = 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();
/* initialize the sin-cos table */
InitSinLUT();
int c;
bool setAffinity=false;
char gNBthreads[128]="n";
int use_cuda = 0;
void *h_tx_sig_pinned = NULL;
#ifdef CHANNEL_SIM_CUDA
void *d_tx_sig = NULL, *d_intermediate_sig = NULL, *d_final_output = NULL;
void *d_curand_states = NULL;
void *h_final_output_pinned = NULL;
float *h_channel_coeffs = NULL;
void *d_channel_coeffs_gpu = NULL;
#endif
while ((c = getopt(argc, argv, "--:O:a:b:c:d:ef:g:h:i:jk:l:m:n:o::p:q:r:s:t:u:v:w:y:z:A:C:F:G:H:I:M:N:PR:S:T:U:L:ZW:E:X:Y:"))
!= -1) {
/* ignore long options starting with '--', option '-O' and their arguments that are handled by configmodule */
/* with this opstring getopt returns 1 for non-option arguments, refer to 'man 3 getopt' */
if (c == 1 || c == '-' || c == 'O')
continue;
printf("handling optarg %c\n",c);
switch (c) {
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':
#ifdef CHANNEL_SIM_CUDA
if (strcmp(optarg, "cuda") == 0) {
use_cuda = 1;
} else
#endif
{
printf("Unsupported flag '%s' for -f. Run '-h' to see the list of available options.\n", optarg);
exit(-1);
}
break;
case 'g':
switch ((char) *optarg) {
case 'A':
channel_model = TDL_A;
DS_TDL = 0.030; // 30 ns
printf("Channel model: TDLA30\n");
break;
case 'B':
channel_model = TDL_B;
DS_TDL = 0.100; // 100ns
printf("Channel model: TDLB100\n");
break;
case 'C':
channel_model = TDL_C;
DS_TDL = 0.300; // 300 ns
printf("Channel model: TDLC300\n");
break;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
if (optarg[1] == ',') {
switch (optarg[2]) {
case 'l':
corr_level = CORR_LEVEL_LOW;
break;
case 'm':
corr_level = CORR_LEVEL_MEDIUM;
break;
case 'h':
corr_level = CORR_LEVEL_HIGH;
break;
default:
printf("Invalid correlation level!\n");
}
}
if (optarg[3] == ',') {
maxDoppler = atoi(&optarg[4]);
printf("Maximum Doppler Frequency: %.0f Hz\n", maxDoppler);
}
break;
case 'i':
i=0;
do {
chest_type[i>>1] = atoi(&optarg[i]);
i+=2;
} while (optarg[i-1] == ',');
break;
case 'j':
log_format |= MATLAB_RAW;
break;
case 'k':
printf("Setting threequarter_fs_flag\n");
threequarter_fs = 1;
break;
case 'l':
length_dmrs = atoi(optarg);
AssertFatal(length_dmrs == 1 || length_dmrs == 2, "Illegal PUSCH DMRS length %d\n", length_dmrs);
printf("PUSCH DMRS length %d\n", length_dmrs);
break;
case 'm':
Imcs = atoi(optarg);
break;
case 'o':
uci_on_pusch = true;
// UCI on PUSCH is not implemented in OAI gNB yet.
// So this flag is needed to verify in MATLAB
no_phase_pre_comp = true;
if (optarg) { // -o with file input: use matlab vector
uci_ulsch_matlab_vec = fopen(optarg, "rb");
if (uci_ulsch_matlab_vec == NULL) {
printf("Error opening %s\n", optarg);
exit(-1);
}
}
break;
case 'W':
precod_nbr_layers = atoi(optarg);
AssertFatal(precod_nbr_layers > 0 && precod_nbr_layers <= 4,
"Number of layers per UE %d should be less than or equal to 4\n",
precod_nbr_layers);
break;
case 'n':
n_trials = atoi(optarg);
break;
case 'p':
extended_prefix_flag = 1;
break;
case 'q':
mcs_table = atoi(optarg);
break;
case 'r':
nb_rb = atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
printf("Setting SNR0 to %f\n", snr0);
break;
case 'C':
threadCnt = atoi(optarg);
break;
case 'u':
mu = atoi(optarg);
break;
case 'v':
max_rounds = atoi(optarg);
AssertFatal(max_rounds > 0 && max_rounds < 16, "Unsupported number of rounds %d, should be in [1,16]\n", max_rounds);
break;
case 'w':
start_rb = atoi(optarg);
break;
case 't':
eff_tp_check = atof(optarg);
break;
case 'y':
n_tx = atoi(optarg);
if ((n_tx == 0) || (n_tx > 4)) {
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 'A':
num_antennas_per_thread = 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 'G':
file_offset = atoi(optarg);
break;
case 'H':
slot = atoi(optarg);
break;
case 'I':
max_ldpc_iterations = atoi(optarg);
break;
case 'M':
ilbrm = 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;
cpu_meas_enabled = 1;
break;
case 'L':
loglvl = atoi(optarg);
break;
case 'T':
enable_ptrs=1;
i=0;
do {
ptrs_arg[i>>1] = atoi(&optarg[i]);
i+=2;
} while (optarg[i-1] == ',');
break;
case 'U':
modify_dmrs = 1;
i=0;
do {
dmrs_arg[i>>1] = atoi(&optarg[i]);
i+=2;
} while (optarg[i-1] == ',');
break;
case 'Q':
params_from_file = 1;
break;
case 'X' :
filename_csv = strdup(optarg);
AssertFatal(filename_csv != NULL, "strdup() error: errno %d\n", errno);
break;
case 'Y':
threadCnt = sizeof(gNBthreads)-1;
strncpy(gNBthreads, optarg, threadCnt);
gNBthreads[threadCnt]=0;
setAffinity=true;
break;
case 'Z':
transform_precoding = transformPrecoder_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;
case 'E':
do_SRS = atoi(optarg);
if (do_SRS == 0) {
printf("SRS disabled\n");
} else if (do_SRS == 1) {
printf("SRS enabled\n");
} else {
printf("Invalid SRS option. SRS disabled.\n");
do_SRS = 0;
}
break;
default:
case 'h':
printf("%s -h(elp)\n", argv[0]);
printf("-a ULSCH starting symbol\n");
printf("-b ULSCH number of symbols\n");
printf("-c RNTI\n");
printf("-d Introduce delay in terms of number of samples\n");
printf("-e To simulate MSG3 configuration\n");
printf("-f <flag> Enable optional feature flag. Available flags:\n");
#ifdef CHANNEL_SIM_CUDA
printf(" cuda Enable CUDA channel simulation\n");
#else
printf(" (none) No optional features were compiled into this executable\n");
#endif
printf("-g Channel model configuration. Arguments list: Number of arguments = 3, {Channel model: [A] TDLA30, [B] TDLB100, [C] TDLC300}, {Correlation: [l] Low, [m] Medium, [h] High}, {Maximum Doppler shift} e.g. -g A,l,10\n");
printf("-h This message\n");
printf("-i Change channel estimation technique. Arguments list: Number of arguments=2, Frequency domain {0:Linear interpolation, 1:PRB based averaging}, Time domain {0:Estimates of last DMRS symbol, 1:Average of DMRS symbols}. e.g. -i 1,0\n");
printf("-j Save signal buffers in binary format.");
printf("-k 3/4 sampling\n");
printf("-l PUSCH DMRS length: 1 or 2\n");
printf("-m MCS value\n");
printf("-n Number of trials to simulate\n");
printf("-o Enable UCI on PUSCH. Optionally accepts input file (without space). This feature is not yet available in gNB so only used to verify with MATLAB generated vector\n");
printf("-p Use extended prefix mode\n");
printf("-q MCS table\n");
printf("-r Number of allocated resource blocks for PUSCH\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 10 dB if ending SNR isn't given\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-t Acceptable effective throughput (in percentage)\n");
printf("-u Set the numerology\n");
printf("-v Set the max rounds\n");
printf("-w Start PRB for PUSCH\n");
printf("-y Number of TX antennas used at UE\n");
printf("-z Number of RX antennas used at gNB\n");
printf("-A Number of antennas per thread for PUSCH channel estimation\n");
printf("-C Specify the number of threads for the simulation\n");
printf("-E {SRS: [0] Disabled, [1] Enabled} e.g. -E 1\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("-H Slot number\n");
printf("-I Maximum LDPC decoder iterations\n");
printf("-L <log level, 0(errors), 1(warning), 2(info) 3(debug) 4 (trace)>\n");
printf("-M Use limited buffer rate-matching\n");
printf("-P Print ULSCH performances\n");
printf("-Q If -F used, read parameters from file\n");
printf("-R Maximum number of available resorce blocks (N_RB_DL)\n");
printf("-T Enable PTRS, arguments list: Number of arguments=2 L_PTRS{0,1,2} K_PTRS{2,4}, e.g. -T 0,2 \n");
printf("-U Change DMRS Config, arguments list: Number of arguments=4, DMRS Mapping Type{0=A,1=B}, DMRS AddPos{0:3}, DMRS Config Type{1,2}, Number of CDM groups without data{1,2,3} e.g. -U 0,2,0,1 \n");
printf("-W Num of layer for PUSCH\n");
printf("-X Output filename (.csv format) for stats\n");
printf("-Z If -Z is used, SC-FDMA or transform precoding is enabled in Uplink \n");
exit(-1);
break;
}
}
AssertFatal(precod_nbr_layers <= min(n_tx, n_rx),
"Number of layers %d cannot be more than min(n_tx %d, n_rx %d)\n",
precod_nbr_layers,
n_tx,
n_rx);
logInit();
set_glog(loglvl);
get_softmodem_params()->phy_test = 1;
get_softmodem_params()->do_ra = 0;
if (snr1set == 0)
snr1 = snr0 + 10;
double sampling_frequency, tx_bandwidth, rx_bandwidth;
get_samplerate_and_bw(mu,
N_RB_DL,
threequarter_fs,
&sampling_frequency,
&tx_bandwidth,
&rx_bandwidth);
RC.gNB = (PHY_VARS_gNB **)malloc_or_fail(sizeof(PHY_VARS_gNB *));
RC.gNB[0] = calloc_or_fail(1, sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0];
gNB->ofdm_offset_divisor = UINT_MAX;
gNB->num_pusch_symbols_per_thread = 1;
gNB->dmrs_num_antennas_per_thread = num_antennas_per_thread;
gNB->RU_list[0] = calloc_or_fail(1, sizeof(**gNB->RU_list));
gNB->RU_list[0]->rfdevice.openair0_cfg = openair0_cfg;
if (setAffinity == false)
initFloatingCoresTpool(threadCnt, &gNB->threadPool, false, "gNB-tpool");
else
initNamedTpool(gNBthreads, &gNB->threadPool, true, "gNB-tpool");
NR_UL_IND_t UL_INFO = {0};
UL_INFO.crc_ind.crc_list = UL_INFO.crc_pdu_list;
UL_INFO.rx_ind.pdu_list = UL_INFO.rx_pdu_list;
UL_INFO.rx_ind.number_of_pdus = 0;
UL_INFO.crc_ind.number_crcs = 0;
gNB->max_ldpc_iterations = max_ldpc_iterations;
gNB->pusch_thres = -20;
gNB->frame_parms.N_RB_DL = N_RB_DL;
gNB->frame_parms.N_RB_UL = N_RB_UL;
gNB->frame_parms.Ncp = extended_prefix_flag ? NR_EXTENDED : NR_NORMAL;
AssertFatal((gNB->if_inst = NR_IF_Module_init(0)) != NULL, "Cannot register interface");
gNB->if_inst->NR_PHY_config_req = nr_phy_config_request;
s_interleaved = malloc_or_fail(n_tx * sizeof(float *));
r_re = malloc_or_fail(n_rx * sizeof(float *));
r_im = malloc_or_fail(n_rx * sizeof(float *));
NR_ServingCellConfigCommon_t *scc = calloc_or_fail(1, sizeof(*scc));
prepare_scc(scc);
uint64_t ssb_bitmap;
fill_scc_sim(scc, &ssb_bitmap, N_RB_DL, N_RB_DL, mu, mu);
fix_scc(scc,ssb_bitmap);
frame_structure_t frame_structure = {0};
frame_type_t frame_type = TDD;
config_frame_structure(mu,
scc->tdd_UL_DL_ConfigurationCommon,
get_tdd_period_idx(scc->tdd_UL_DL_ConfigurationCommon),
frame_type,
&frame_structure);
AssertFatal(is_ul_slot(slot, &frame_structure), "The slot selected is not UL. Can't run ULSIM\n");
// TODO do a UECAP for phy-sim
const nr_mac_config_t conf = {.pdsch_AntennaPorts = {.N1 = 1, .N2 = 1, .XP = 1},
.pusch_AntennaPorts = n_rx,
.minRXTXTIME = 0,
.do_CSIRS = 0,
.do_SRS = 0,
.num_dlharq = 16,
.num_ulharq = 16,
.force_256qam_off = false,
.timer_config.sr_ProhibitTimer = 0,
.timer_config.sr_TransMax = 64,
.timer_config.sr_ProhibitTimer_v1700 = 0,
.timer_config.t300 = 400,
.timer_config.t301 = 400,
.timer_config.t310 = 2000,
.timer_config.n310 = 10,
.timer_config.t311 = 3000,
.timer_config.n311 = 1,
.timer_config.t319 = 400,
.spatial_stream_index = {0, 1, 2, 3, 4, 5, 6, 7}};
const nr_rlc_configuration_t rlc_config = {
.srb = {
.t_poll_retransmit = 45,
.t_reassembly = 35,
.t_status_prohibit = 0,
.poll_pdu = -1,
.poll_byte = -1,
.max_retx_threshold = 8,
.sn_field_length = 12,
},
.drb_am = {
.t_poll_retransmit = 45,
.t_reassembly = 15,
.t_status_prohibit = 15,
.poll_pdu = 64,
.poll_byte = 1024 * 500,
.max_retx_threshold = 32,
.sn_field_length = 18,
},
.drb_um = {
.t_reassembly = 15,
.sn_field_length = 12,
}
};
RC.nb_nr_macrlc_inst = 1;
mac_top_init_gNB(ngran_gNB, scc, &conf, &rlc_config);
RC.nrmac[0]->beam_info = (NR_beam_info_t){.beams_per_period = 1};
nr_mac_config_scc(RC.nrmac[0], scc, &conf);
NR_UE_NR_Capability_t* UE_Capability_nr = CALLOC(1,sizeof(NR_UE_NR_Capability_t));
prepare_sim_uecap(UE_Capability_nr, scc, mu, N_RB_UL, 0, mcs_table);
rnti_t rnti = 0x1234;
int uid = 0;
int ssb_index = 0;
NR_CellGroupConfig_t *secondaryCellGroup = get_default_secondaryCellGroup(scc, UE_Capability_nr, 0, 1, &conf, uid, ssb_index);
secondaryCellGroup->spCellConfig->reconfigurationWithSync = get_reconfiguration_with_sync(rnti, uid, scc, frame);
NR_BCCH_BCH_Message_t *mib = get_new_MIB_NR(scc);
// UE dedicated configuration
nr_mac_add_test_ue(RC.nrmac[0], rnti, secondaryCellGroup);
gNB->frame_parms.nb_antennas_tx = 1;
gNB->frame_parms.nb_antennas_rx = n_rx;
nfapi_nr_config_request_scf_t *cfg = &gNB->gNB_config;
cfg->carrier_config.num_tx_ant.value = 1;
cfg->carrier_config.num_rx_ant.value = n_rx;
// nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,0,0x01);
gNB->chest_freq = chest_type[0];
gNB->chest_time = chest_type[1];
phy_init_nr_gNB(gNB);
/* RU handles rxdataF, and gNB just has a pointer. Here, we don't have an RU,
* so we need to allocate that memory as well. */
for (i = 0; i < n_rx; i++)
gNB->common_vars.rxdataF[i] = malloc16_clear(gNB->frame_parms.samples_per_frame_wCP * sizeof(int32_t));
N_RB_DL = gNB->frame_parms.N_RB_DL;
/* no RU: need to have rxdata */
c16_t **rxdata;
rxdata = malloc_or_fail(n_rx * sizeof(*rxdata));
for (int i = 0; i < n_rx; ++i)
rxdata[i] = calloc_or_fail(gNB->frame_parms.samples_per_frame, sizeof(**rxdata));
NR_BWP_Uplink_t *ubwp=secondaryCellGroup->spCellConfig->spCellConfigDedicated->uplinkConfig->uplinkBWP_ToAddModList->list.array[0];
// Configure channel model
UE2gNB = new_channel_desc_scm(n_tx,
n_rx,
channel_model,
sampling_frequency / 1e6,
gNB->frame_parms.ul_CarrierFreq,
tx_bandwidth,
DS_TDL,
maxDoppler,
corr_level,
0,
delay,
0,
0);
if (UE2gNB == NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
const int num_samples_alloc = 153600;
#ifdef CHANNEL_SIM_CUDA
init_cuda_chsim_buffers(use_cuda,
n_tx,
n_rx,
&d_tx_sig,
&d_intermediate_sig,
&d_final_output,
&d_curand_states,
&h_tx_sig_pinned,
&h_final_output_pinned,
&d_channel_coeffs_gpu);
if (use_cuda) {
int num_links = n_tx * n_rx;
h_channel_coeffs = (float *)malloc_or_fail(num_links * UE2gNB->channel_length * sizeof(float2));
}
#endif
#if !defined(CHANNEL_SIM_CUDA) || !use_cuda
printf("Pre-allocating padded host memory for the CPU channel pipeline...\n");
const int max_padding_alloc = 256 - 1;
size_t padded_tx_alloc_bytes = n_tx * (num_samples_alloc + max_padding_alloc) * 2 * sizeof(float);
h_tx_sig_pinned = malloc_or_fail(padded_tx_alloc_bytes);
if (h_tx_sig_pinned == NULL) {
printf("Error: Failed to allocate host buffer for CPU path\n");
exit(-1);
}
#endif
// Configure UE
nrPHY_vars_UE_g = malloc_or_fail(sizeof(PHY_VARS_NR_UE **));
nrPHY_vars_UE_g[0] = malloc_or_fail(sizeof(PHY_VARS_NR_UE *));
PHY_VARS_NR_UE *UE = calloc_or_fail(1, sizeof(PHY_VARS_NR_UE));
nrPHY_vars_UE_g[0][0] = UE;
UE->frame_parms = gNB->frame_parms;
UE->frame_parms.nb_antennas_tx = n_tx;
UE->frame_parms.nb_antennas_rx = 0;
UE->nrLDPC_coding_interface = gNB->nrLDPC_coding_interface;
if (init_nr_ue_signal(UE, 1) != 0) {
printf("Error at UE NR initialisation\n");
exit(-1);
}
init_nr_ue_transport(UE);
//Configure UE
NR_UE_MAC_INST_t* UE_mac = nr_l2_init_ue(0, mu);
ue_init_config_request(UE_mac, get_slots_per_frame_from_scs(mu));
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->no_phase_pre_comp = no_phase_pre_comp;
UE_mac->if_module = nr_ue_if_module_init(0);
initFloatingCoresTpool(threadCnt, &nrUE_params.Tpool, false, "UE-tpool");
nr_ue_phy_config_request(&UE_mac->phy_config);
unsigned char harq_pid = 0;
NR_gNB_ULSCH_t *ulsch_gNB = &gNB->ulsch[UE_id];
NR_Sched_Rsp_t *Sched_INFO = malloc16_clear(sizeof(*Sched_INFO));
memset((void*)Sched_INFO,0,sizeof(*Sched_INFO));
nfapi_nr_ul_tti_request_t *UL_tti_req = &Sched_INFO->UL_tti_req;
time_stats_t channel_stats = {0};
time_stats_t noise_stats = {0};
time_stats_t pipeline_stats = {0};
nr_phy_data_tx_t phy_data = {0};
uint32_t errors_decoding = 0;
fapi_nr_ul_config_request_t ul_config = {0};
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 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];
/* DMRS Conf Type 1 or 2 */
if(dmrs_arg[2] == 1)
dmrs_config_type = pusch_dmrs_type1;
else if(dmrs_arg[2] == 2)
dmrs_config_type = pusch_dmrs_type2;
num_dmrs_cdm_grps_no_data = dmrs_arg[3];
}
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);
int number_dmrs_symbols = count_bits64_with_mask(l_prime_mask, start_symbol, nb_symb_sch);
uint8_t nb_re_dmrs = (dmrs_config_type == pusch_dmrs_type1) ? 6 : 4;
uint32_t tbslbrm = 0;
if (ilbrm)
tbslbrm = nr_compute_tbslbrm(mcs_table, N_RB_UL, precod_nbr_layers);
if ((UE->frame_parms.nb_antennas_tx==4)&&(precod_nbr_layers==4))
num_dmrs_cdm_grps_no_data = 2;
if (transform_precoding == transformPrecoder_enabled) {
AssertFatal(enable_ptrs == 0, "PTRS NOT SUPPORTED IF TRANSFORM PRECODING IS ENABLED\n");
int 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;
nb_re_dmrs = 6;
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 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, start_symbol %u\n",
num_dmrs_cdm_grps_no_data,
dmrs_config_type,
nb_rb,
nb_symb_sch,
start_symbol);
printf("[ULSIM]: MCS: %d, mod order: %u, code_rate: %u\n", Imcs, mod_order, code_rate);
uint8_t ulsch_input_buffer[TBS/8];
ulsch_input_buffer[0] = 0x31;
for (i = 1; i < TBS/8; i++) {
ulsch_input_buffer[i] = (uint8_t)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);
double ts = 1.0 / (gNB->frame_parms.subcarrier_spacing * gNB->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 (enable_ptrs && 1 << ptrs_time_density >= nb_symb_sch)
pdu_bit_map &= ~PUSCH_PDU_BITMAP_PUSCH_PTRS; // disable PUSCH PTRS
printf("\n");
uint32_t unav_res = 0;
if (pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
set_ptrs_symb_idx(&ptrsSymPos, nb_symb_sch, start_symbol, 1 << ptrs_time_density, l_prime_mask);
ptrsSymbPerSlot = get_ptrs_symbols_in_slot(ptrsSymPos, start_symbol, nb_symb_sch);
ptrsRePerSymb = ((nb_rb + ptrs_freq_density - 1) / ptrs_freq_density);
unav_res = ptrsSymbPerSlot * ptrsRePerSymb;
LOG_D(PHY, "[ULSIM] PTRS Symbols in a slot: %2u, RE per Symbol: %3u, RE in a slot %4d\n", ptrsSymbPerSlot, ptrsRePerSymb, unav_res);
}
unsigned int available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, number_dmrs_symbols, unav_res, mod_order, precod_nbr_layers);
uint8_t cw_buf[available_bits];
memset(cw_buf, 0, available_bits);
UE->phy_sim_test_buf = calloc_or_fail(1, (available_bits + 7) / 8);
printf("[ULSIM]: VALUE OF G: %u, TBS: %u\n", available_bits, TBS);
int frame_length_complex_samples = gNB->frame_parms.samples_per_subframe * NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
for (int aatx = 0; aatx < n_tx; aatx++) {
s_interleaved[aatx] = calloc_or_fail(1, frame_length_complex_samples * 2 * sizeof(float));
}
for (int aarx = 0; aarx < n_rx; aarx++) {
r_re[aarx] = calloc_or_fail(1, frame_length_complex_samples * sizeof(float));
r_im[aarx] = calloc_or_fail(1, frame_length_complex_samples * sizeof(float));
}
//for (int i=0;i<16;i++) printf("%f\n",gaussdouble(0.0,1.0));
int read_errors=0;
int slot_offset = get_samples_slot_timestamp(&gNB->frame_parms, slot);
int slot_length = slot_offset - get_samples_slot_timestamp(&gNB->frame_parms, slot - 1);
if (input_fd != NULL) {
// 800 samples is N_TA_OFFSET for FR1 @ 30.72 Ms/s,
AssertFatal(gNB->frame_parms.subcarrier_spacing == 30000,
"only 30 kHz for file input for now (%d)\n",
gNB->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);
for (int irx = 0; irx < gNB->frame_parms.nb_antennas_rx; irx++) {
fseek(input_fd,irx*(slot_length+15)*sizeof(int16_t)*2,SEEK_SET); // matlab adds samlples to the end to emulate channel delay
read_errors += fread((void *)&rxdata[irx][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,
rxdata[irx][slot_offset].r,
rxdata[irx][slot_offset].i);
}
mod_order = nr_get_Qm_ul(Imcs, mcs_table);
code_rate = nr_get_code_rate_ul(Imcs, mcs_table);
}
// csv file
if (filename_csv != NULL) {
csv_file = fopen(filename_csv, "a");
if (csv_file == NULL) {
printf("Can't open file \"%s\", errno %d\n", filename_csv, errno);
free(s_interleaved);
free(r_re);
free(r_im);
return 1;
}
// adding name of parameters into file
fprintf(csv_file,"SNR,false_positive,");
for (int r = 0; r < max_rounds; r++)
fprintf(csv_file,"n_errors_%d,errors_scrambling_%d,channel_bler_%d,channel_ber_%d,",r,r,r,r);
fprintf(csv_file,"avg_round,eff_rate,eff_throughput,TBS,DMRS-PUSCH delay estimation: (min,max,average)\n");
}
//---------------
int ret = 1;
int srs_ret = do_SRS;
for (SNR = snr0; SNR <= snr1 && !stop; SNR += snr_step) {
varArray_t *table_rx=initVarArray(1000,sizeof(double));
int error_flag = 0;
n_false_positive = 0;
effRate = 0;
effTP = 0;
roundStats = 0;
reset_meas(&gNB->phy_proc_rx);
reset_meas(&gNB->rx_pusch_stats);
reset_meas(&gNB->rx_pusch_init_stats);
reset_meas(&gNB->rx_pusch_symbol_processing_stats);
reset_meas(&gNB->pusch_extraction_stats);
reset_meas(&gNB->pusch_channel_compensation_stats);
reset_meas(&gNB->ulsch_llr_stats);
reset_meas(&gNB->ulsch_layer_demapping_and_unscrambling_stats);
reset_meas(&gNB->ulsch_decoding_stats);
reset_meas(&gNB->ts_deinterleave);
reset_meas(&gNB->ts_rate_unmatch);
reset_meas(&gNB->ts_ldpc_decode);
reset_meas(&gNB->ulsch_channel_estimation_stats);
reset_meas(&gNB->pusch_channel_estimation_antenna_processing_stats);
reset_meas(&gNB->rx_srs_stats);
reset_meas(&gNB->generate_srs_stats);
reset_meas(&gNB->get_srs_signal_stats);
reset_meas(&gNB->srs_channel_estimation_stats);
reset_meas(&gNB->srs_timing_advance_stats);
reset_meas(&gNB->srs_report_tlv_stats);
reset_meas(&gNB->srs_beam_report_stats);
reset_meas(&gNB->srs_iq_matrix_stats);
init_nr_ue_phy_cpu_stats(&UE->phy_cpu_stats);
uint32_t errors_scrambling[16] = {0};
int n_errors[16] = {0};
int round_trials[16] = {0};
double blerStats[16] = {0};
double berStats[16] = {0};
uint64_t sum_pusch_delay = 0;
int min_pusch_delay = INT_MAX;
int max_pusch_delay = INT_MIN;
int delay_pusch_est_count = 0;
int64_t sum_srs_snr = 0;
int srs_snr_count = 0;
for (trial = 0; trial < n_trials && !stop; trial++) {
uint8_t round = 0;
crc_status = 1;
errors_decoding = 0;
NR_gNB_PUSCH *pusch_vars = &gNB->pusch_vars[UE_id];
while (round < max_rounds && crc_status && !stop) {
round_trials[round]++;
rv_index = nr_get_rv(round % 4);
/// gNB UL PDUs
UL_tti_req->SFN = frame;
UL_tti_req->Slot = slot;
UL_tti_req->n_pdus = do_SRS == 1 ? 2 : 1;
nfapi_nr_ul_tti_request_number_of_pdus_t *pdu_element0 = &UL_tti_req->pdus_list[0];
pdu_element0->pdu_type = NFAPI_NR_UL_CONFIG_PUSCH_PDU_TYPE;
pdu_element0->pdu_size = sizeof(nfapi_nr_pusch_pdu_t);
nfapi_nr_pusch_pdu_t *pusch_pdu = &pdu_element0->pusch_pdu;
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 >> 3;
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 = precod_nbr_layers;
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 << precod_nbr_layers) - 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->maintenance_parms_v3.tbSizeLbrmBytes = tbslbrm;
pusch_pdu->pusch_data.rv_index = rv_index;
pusch_pdu->pusch_data.harq_process_id = 0;
pusch_pdu->pusch_data.new_data_indicator = round == 0 ? true : false;
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_or_fail(2 * sizeof(nfapi_nr_ptrs_ports_t));
pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0;
pusch_pdu->maintenance_parms_v3.ldpcBaseGraph = get_BG(TBS, code_rate);
pusch_pdu->param_v4.numSpatialStreamIndices = conf.pusch_AntennaPorts;
memcpy(pusch_pdu->param_v4.spatialStreamIndices, conf.spatial_stream_index, sizeof(conf.spatial_stream_index));
// if transform precoding is enabled
if (transform_precoding == transformPrecoder_enabled) {
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;
}
if (do_SRS == 1) {
const uint16_t m_SRS[64] = { 4, 8, 12, 16, 16, 20, 24, 24, 28, 32, 36, 40, 48, 48, 52, 56, 60, 64, 72, 72, 76, 80, 88,
96, 96, 104, 112, 120, 120, 120, 128, 128, 128, 132, 136, 144, 144, 144, 144, 152, 160,
160, 160, 168, 176, 184, 192, 192, 192, 192, 208, 216, 224, 240, 240, 240, 240, 256, 256,
256, 264, 272, 272, 272 };
nfapi_nr_ul_tti_request_number_of_pdus_t *pdu_element1 = &UL_tti_req->pdus_list[1];
pdu_element1->pdu_type = NFAPI_NR_UL_CONFIG_SRS_PDU_TYPE;
pdu_element1->pdu_size = sizeof(nfapi_nr_srs_pdu_t);
nfapi_nr_srs_pdu_t *srs_pdu = &pdu_element1->srs_pdu;
memset(srs_pdu, 0, sizeof(nfapi_nr_srs_pdu_t));
srs_pdu->rnti = n_rnti;
srs_pdu->bwp_size = NRRIV2BW(ubwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
srs_pdu->bwp_start = NRRIV2PRBOFFSET(ubwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
srs_pdu->subcarrier_spacing = gNB->frame_parms.subcarrier_spacing;
srs_pdu->num_ant_ports = n_tx == 4 ? 2 : n_tx == 2 ? 1 : 0;
srs_pdu->sequence_id = 40;
srs_pdu->time_start_position = gNB->frame_parms.symbols_per_slot - 1;
srs_pdu->config_index = rrc_get_max_nr_csrs(srs_pdu->bwp_size, srs_pdu->bandwidth_index);
srs_pdu->resource_type = NR_SRS_Resource__resourceType_PR_periodic;
srs_pdu->t_srs = 1;
srs_pdu->srs_parameters_v4.srs_bandwidth_size = m_SRS[srs_pdu->config_index];
srs_pdu->srs_parameters_v4.usage = 1 << NFAPI_NR_SRS_BEAMMANAGEMENT; // to get SNR
srs_pdu->srs_parameters_v4.report_type[0] = 1;
srs_pdu->srs_parameters_v4.iq_representation = 1;
srs_pdu->srs_parameters_v4.prg_size = 1;
srs_pdu->srs_parameters_v4.num_total_ue_antennas = 1 << srs_pdu->num_ant_ports;
srs_pdu->srs_parameters_v4.num_ul_spatial_streams_ports = n_rx;
srs_pdu->beamforming.num_prgs = m_SRS[srs_pdu->config_index];
srs_pdu->beamforming.prg_size = 1;
}
// Fill FAPI PUSCH groups for 1 UE
UL_tti_req->n_group = 1;
nfapi_nr_ul_tti_request_number_of_groups_t *group = &UL_tti_req->groups_list[0];
group->n_ue = 1;
group->ue_list[0].pdu_idx = 0;
/* load FAPI into RX of L1 */
nr_save_ul_tti_req(gNB, &Sched_INFO->UL_tti_req);
/// UE UL PDUs
UE->ul_harq_processes[harq_pid].round = round;
UE_proc.nr_slot_tx = slot;
UE_proc.frame_tx = frame;
UE_proc.gNB_id = 0;
// --------- setting parameters for UE --------
nr_scheduled_response_t scheduled_response = {.ul_config = &ul_config, .phy_data = (void *)&phy_data};
ul_config.slot = slot;
ul_config.number_pdus = do_SRS == 1 ? 2 : 1;
fapi_nr_ul_config_request_pdu_t *ul_config0 = &ul_config.ul_config_list[0];
ul_config0->pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config0->pusch_config_pdu;
// Config UL TX PDU
pusch_config_pdu->tx_request_body.fapiTxPdu = ulsch_input_buffer;
pusch_config_pdu->tx_request_body.pdu_length = TBS / 8;
pusch_config_pdu->rnti = n_rnti;
pusch_config_pdu->pdu_bit_map = pdu_bit_map;
pusch_config_pdu->qam_mod_order = mod_order;
pusch_config_pdu->rb_size = nb_rb;
pusch_config_pdu->rb_start = start_rb;
pusch_config_pdu->nr_of_symbols = nb_symb_sch;
pusch_config_pdu->start_symbol_index = start_symbol;
pusch_config_pdu->ul_dmrs_symb_pos = l_prime_mask;
pusch_config_pdu->dmrs_config_type = dmrs_config_type;
pusch_config_pdu->mcs_index = Imcs;
pusch_config_pdu->mcs_table = mcs_table;
pusch_config_pdu->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
pusch_config_pdu->nrOfLayers = precod_nbr_layers;
pusch_config_pdu->dmrs_ports = ((1 << precod_nbr_layers) - 1);
pusch_config_pdu->target_code_rate = code_rate;
pusch_config_pdu->tbslbrm = tbslbrm;
pusch_config_pdu->ldpcBaseGraph = get_BG(TBS, code_rate);
pusch_config_pdu->pusch_data.tb_size = TBS / 8;
pusch_config_pdu->pusch_data.new_data_indicator = round == 0 ? true : false;
pusch_config_pdu->pusch_data.rv_index = rv_index;
pusch_config_pdu->pusch_data.harq_process_id = harq_pid;
pusch_config_pdu->pusch_ptrs.ptrs_time_density = ptrs_time_density;
pusch_config_pdu->pusch_ptrs.ptrs_freq_density = ptrs_freq_density;
pusch_config_pdu->pusch_ptrs.ptrs_ports_list =
(nfapi_nr_ue_ptrs_ports_t *)malloc_or_fail(2 * sizeof(nfapi_nr_ue_ptrs_ports_t));
pusch_config_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0;
pusch_config_pdu->transform_precoding = transform_precoding;
// if transform precoding is enabled
if (transform_precoding == transformPrecoder_enabled) {
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
pusch_config_pdu->dfts_ofdm.low_papr_sequence_number = 0; // V as defined in 38.211 section 6.4.1.1.1.2
// pusch_config_pdu->pdu_bit_map |= PUSCH_PDU_BITMAP_DFTS_OFDM;
pusch_config_pdu->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
}
if (uci_on_pusch) {
const nfapi_nr_ue_pusch_uci_t pusch_uci = {
.alpha_scaling = 3,
.beta_offset_csi1 = 13,
.beta_offset_csi2 = 13,
.beta_offset_harq_ack = 11,
.harq_ack_bit_length = 3,
.harq_payload = 3,
.csi_payload = {.p1_bits = 4, .part1_payload = 15, .p2_bits = 4, .part2_payload = 15}};
pusch_config_pdu->pusch_uci = pusch_uci;
prepare_ue_pusch_pdu_from_matlab_vector(uci_on_pusch, uci_ulsch_matlab_vec, pusch_config_pdu, cw_buf);
}
if (do_SRS == 1) {
fapi_nr_ul_config_request_pdu_t *ul_config1 = &ul_config.ul_config_list[1];
ul_config1->pdu_type = FAPI_NR_UL_CONFIG_TYPE_SRS;
fapi_nr_ul_config_srs_pdu *srs_config_pdu = &ul_config1->srs_config_pdu;
memset(srs_config_pdu, 0, sizeof(fapi_nr_ul_config_srs_pdu));
srs_config_pdu->rnti = n_rnti;
srs_config_pdu->bwp_size = NRRIV2BW(ubwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
srs_config_pdu->bwp_start = NRRIV2PRBOFFSET(ubwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
srs_config_pdu->subcarrier_spacing = gNB->frame_parms.subcarrier_spacing;
srs_config_pdu->num_ant_ports = n_tx == 4 ? 2 : n_tx == 2 ? 1 : 0;
srs_config_pdu->config_index = rrc_get_max_nr_csrs(srs_config_pdu->bwp_size, srs_config_pdu->bandwidth_index);
srs_config_pdu->sequence_id = 40;
srs_config_pdu->resource_type = NR_SRS_Resource__resourceType_PR_periodic;
srs_config_pdu->t_srs = 1;
srs_config_pdu->time_start_position = gNB->frame_parms.symbols_per_slot - 1;
}
for (int i = 0; i < (TBS / 8); i++)
UE->ul_harq_processes[harq_pid].payload_AB[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///////////////////////
///////////
int slot_start = get_samples_slot_timestamp(&UE->frame_parms, slot);
c16_t *tx[UE->frame_parms.nb_antennas_tx];
for (int i = 0; i < UE->frame_parms.nb_antennas_tx; i++)
tx[i] = UE->common_vars.txData[i] + slot_start;
phy_procedures_nrUE_TX(UE, &UE_proc, &phy_data, tx);
if (n_trials == 1) {
LOG_M("txsig0.m", "txs0", &UE->common_vars.txData[0][slot_offset], slot_length, 1, 1 | log_format);
if (precod_nbr_layers > 1) {
LOG_M("txsig1.m", "txs1", &UE->common_vars.txData[1][slot_offset], slot_length, 1, 1 | log_format);
if (precod_nbr_layers == 4) {
LOG_M("txsig2.m", "txs2", &UE->common_vars.txData[2][slot_offset], slot_length, 1, 1 | log_format);
LOG_M("txsig3.m", "txs3", &UE->common_vars.txData[3][slot_offset], slot_length, 1, 1 | log_format);
}
}
}
///////////
////////////////////////////////////////////////////
// Compute transmitter energy level
tx_offset = get_samples_slot_timestamp(&gNB->frame_parms, slot);
int symbol_offset = tx_offset + 5 * gNB->frame_parms.ofdm_symbol_size + 4 * gNB->frame_parms.nb_prefix_samples
+ gNB->frame_parms.nb_prefix_samples0;
int symbol_length = gNB->frame_parms.ofdm_symbol_size + gNB->frame_parms.nb_prefix_samples;
txlev_sum = compute_tx_energy_level(UE->common_vars.txData,
UE->frame_parms.nb_antennas_tx,
symbol_offset,
symbol_length,
n_trials);
} else
n_trials = 1;
if (input_fd == NULL) {
double sigma =
compute_noise_variance(txlev_sum, gNB->frame_parms.ofdm_symbol_size, nb_rb, precod_nbr_layers, SNR, n_trials);
for (int aa = 0; aa < UE->frame_parms.nb_antennas_tx; aa++) {
for (i = 0; i < slot_length; i++) {
s_interleaved[aa][2 * i] = (float)UE->common_vars.txData[aa][slot_offset + i].r;
s_interleaved[aa][2 * i + 1] = (float)UE->common_vars.txData[aa][slot_offset + i].i;
}
}
const int padding_len = UE2gNB->channel_length - 1;
const int padded_slot_length = slot_length + padding_len;
float *h_tx_ptr = (float *)h_tx_sig_pinned;
size_t total_padded_bytes_for_slot = n_tx * padded_slot_length * 2 * sizeof(float);
memset(h_tx_ptr, 0, total_padded_bytes_for_slot);
for (int j = 0; j < n_tx; j++) {
float *data_start_ptr = h_tx_ptr + (j * padded_slot_length + padding_len) * 2;
memcpy(data_start_ptr, s_interleaved[j], slot_length * 2 * sizeof(float));
}
#ifdef CHANNEL_SIM_CUDA
if (use_cuda) {
#if defined(USE_UNIFIED_MEMORY)
#if defined(CUDA_VERSION) && CUDA_VERSION >= 13000
struct cudaMemLocation deviceId;
deviceId.type = cudaMemLocationTypeDevice;
cudaGetDevice(&deviceId.id);
const int padding_len = UE2gNB->channel_length - 1;
const int padded_slot_length = slot_length + padding_len;
cudaMemPrefetchAsync(d_tx_sig, n_tx * padded_slot_length * 2 * sizeof(float), deviceId, 0, 0);
#else
int deviceId;
cudaGetDevice(&deviceId);
const int padding_len = UE2gNB->channel_length - 1;
const int padded_slot_length = slot_length + padding_len;
cudaMemPrefetchAsync(d_tx_sig, n_tx * padded_slot_length * 2 * sizeof(float), deviceId, 0);
#endif
#endif
start_meas(&pipeline_stats);
random_channel(UE2gNB, 0);
int num_links = UE2gNB->nb_tx * UE2gNB->nb_rx;
if (h_channel_coeffs == NULL) {
h_channel_coeffs = (float *)malloc_or_fail(num_links * 256 * sizeof(float2));
}
for (int link = 0; link < num_links; link++) {
for (int l = 0; l < UE2gNB->channel_length; l++) {
int idx = link * UE2gNB->channel_length + l;
((float2 *)h_channel_coeffs)[idx].x = (float)UE2gNB->ch[link][l].r;
((float2 *)h_channel_coeffs)[idx].y = (float)UE2gNB->ch[link][l].i;
}
}
run_channel_pipeline_cuda(rxdata,
n_tx,
n_rx,
UE2gNB->channel_length,
slot_length,
h_channel_coeffs,
(float)sigma,
ts,
pdu_bit_map,
PUSCH_PDU_BITMAP_PUSCH_PTRS,
slot_offset,
delay,
d_tx_sig,
d_intermediate_sig,
d_final_output,
d_curand_states,
h_tx_sig_pinned,
h_final_output_pinned,
d_channel_coeffs_gpu);
cudaDeviceSynchronize();
stop_meas(&pipeline_stats);
} else
#endif
{
float **tx_sig_for_cpu = malloc_or_fail(n_tx * sizeof(float *));
float *h_tx_ptr = (float *)h_tx_sig_pinned;
const int padding_len = UE2gNB->channel_length - 1;
const int padded_slot_length = slot_length + padding_len;
for (int j = 0; j < n_tx; j++) {
tx_sig_for_cpu[j] = h_tx_ptr + (j * padded_slot_length + padding_len) * 2;
}
start_meas(&channel_stats);
multipath_channel_float(UE2gNB, tx_sig_for_cpu, r_re, r_im, slot_length, 0, (n_trials == 1) ? 1 : 0);
stop_meas(&channel_stats);
free(tx_sig_for_cpu);
bool apply_phase_noise = (pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS);
start_meas(&noise_stats);
add_noise_float(rxdata,
(const float **)r_re,
(const float **)r_im,
(float)sigma,
slot_length,
slot_offset,
ts,
delay,
apply_phase_noise,
gNB->frame_parms.nb_antennas_rx);
stop_meas(&noise_stats);
}
}
/*End input_fd */
//----------------------------------------------------------
//------------------- gNB phy procedures -------------------
//----------------------------------------------------------
UL_INFO.rx_ind.number_of_pdus = 0;
UL_INFO.crc_ind.number_crcs = 0;
UL_INFO.srs_ind.number_of_pdus = 0;
//----------- OFDM Demodulation and RX rotation--------------------------
bool was_symbol_used[14] = {0};
int offset = (slot & 3) * gNB->frame_parms.symbols_per_slot * gNB->frame_parms.ofdm_symbol_size;
for (int i = 0; i < 14; i++) {
was_symbol_used[i] = true;
}
nr_ofdm_demod_and_rx_rotation(rxdata,
gNB->common_vars.rxdataF,
&gNB->frame_parms,
gNB->frame_parms.nb_antennas_rx,
slot,
offset,
link_type_ul,
was_symbol_used);
ul_proc_error = phy_procedures_gNB_uespec_RX(gNB, frame, slot, &UL_INFO);
if (n_trials == 1 && round == 0) {
LOG_M("rxsig0.m", "rx0", &rxdata[0][slot_offset], slot_length, 1, 1 | log_format);
LOG_M("rxsigF0.m", "rxsF0", gNB->common_vars.rxdataF[0], 14 * gNB->frame_parms.ofdm_symbol_size, 1, 1 | log_format);
if (precod_nbr_layers > 1) {
LOG_M("rxsig1.m", "rx1", &rxdata[1][slot_offset], slot_length, 1, 1);
LOG_M("rxsigF1.m", "rxsF1", gNB->common_vars.rxdataF[1], 14 * gNB->frame_parms.ofdm_symbol_size, 1, 1 | log_format);
if (precod_nbr_layers == 4) {
LOG_M("rxsig2.m", "rx2", &rxdata[2][slot_offset], slot_length, 1, 1);
LOG_M("rxsig3.m", "rx3", &rxdata[3][slot_offset], slot_length, 1, 1);
LOG_M("rxsigF2.m", "rxsF2", gNB->common_vars.rxdataF[2], 14 * gNB->frame_parms.ofdm_symbol_size, 1, 1 | log_format);
LOG_M("rxsigF3.m", "rxsF3", gNB->common_vars.rxdataF[3], 14 * gNB->frame_parms.ofdm_symbol_size, 1, 1 | log_format);
}
}
}
if (n_trials == 1 && round == 0) {
__attribute__((unused)) int off = ((nb_rb & 1) == 1) ? 4 : 0;
LOG_M("chestF0.m",
"chF0",
&pusch_vars->ul_ch_estimates[0][start_symbol * gNB->frame_parms.ofdm_symbol_size],
gNB->frame_parms.ofdm_symbol_size,
1,
1 | log_format);
LOG_M("rxsigF0_comp.m",
"rxsF0_comp",
&pusch_vars->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_format);
if (precod_nbr_layers == 2) {
LOG_M("chestF3.m",
"chF3",
&pusch_vars->ul_ch_estimates[3][start_symbol * gNB->frame_parms.ofdm_symbol_size],
gNB->frame_parms.ofdm_symbol_size,
1,
1 | log_format);
LOG_M("rxsigF1_comp.m",
"rxsF1_comp",
&pusch_vars->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_format);
}
if (precod_nbr_layers == 4) {
LOG_M("chestF5.m",
"chF5",
&pusch_vars->ul_ch_estimates[5][start_symbol * gNB->frame_parms.ofdm_symbol_size],
gNB->frame_parms.ofdm_symbol_size,
1,
1 | log_format);
LOG_M("chestF10.m",
"chF10",
&pusch_vars->ul_ch_estimates[10][start_symbol * gNB->frame_parms.ofdm_symbol_size],
gNB->frame_parms.ofdm_symbol_size,
1,
1 | log_format);
LOG_M("chestF15.m",
"chF15",
&pusch_vars->ul_ch_estimates[15][start_symbol * gNB->frame_parms.ofdm_symbol_size],
gNB->frame_parms.ofdm_symbol_size,
1,
1 | log_format);
LOG_M("rxsigF2_comp.m",
"rxsF2_comp",
&pusch_vars->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_format);
LOG_M("rxsigF3_comp.m",
"rxsF3_comp",
&pusch_vars->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_format);
}
LOG_M("rxsigF0_llr.m",
"rxsF0_llr",
&pusch_vars->llr[0],
precod_nbr_layers * (nb_symb_sch - 1) * NR_NB_SC_PER_RB * pusch_pdu->rb_size * mod_order,
1,
0 | log_format);
}
if ((ulsch_gNB->last_iteration_cnt >= ulsch_gNB->max_ldpc_iterations) || ul_proc_error == 1) {
error_flag = uci_on_pusch ? 0 : 1;
n_errors[round]++;
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)) {
printf("[ULSIM][PTRS] Available bits are: %5u, removed PTRS bits are: %5d \n",
available_bits, (ptrsSymbPerSlot * ptrsRePerSymb * mod_order * precod_nbr_layers));
}
if (uci_on_pusch) {
for (i = 0; i < available_bits; i++) {
const uint8_t current_bit = (UE->phy_sim_test_buf[i / 8] >> (i & 7)) & 1;
const uint8_t test_vector_bit = cw_buf[i] & 1;
if (current_bit != test_vector_bit)
errors_scrambling[round]++;
}
} else {
for (i = 0; i < available_bits; i++) {
const uint8_t current_bit = (UE->ul_harq_processes[harq_pid].f[i / 8] >> (i & 7)) & 1;
if (((current_bit == 0) && (pusch_vars->llr[i] <= 0)) || ((current_bit == 1) && (pusch_vars->llr[i] >= 0))) {
errors_scrambling[round]++;
}
}
}
if (uci_on_pusch && uci_ulsch_matlab_vec && (errors_scrambling[round] == 0)) {
ret = 0;
printf("*************\n");
printf("UCI on PUSCH test OK against MATLAB generated codeword\n");
printf("*************\n");
break;
}
round++;
} // round
if (n_trials == 1 && errors_scrambling[0] > 0) {
printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in unscrambling = %u\n" "\x1B[0m", frame, trial, errors_scrambling[0]);
}
for (i = 0; i < TBS; i++) {
uint8_t estimated_output_bit = (ulsch_gNB->harq_process->b[i / 8] & (1 << (i & 7))) >> (i & 7);
uint8_t test_input_bit = (UE->ul_harq_processes[harq_pid].payload_AB[i / 8] & (1 << (i & 7))) >> (i & 7);
if (estimated_output_bit != test_input_bit) {
/*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 (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 += ((float)round);
if (!crc_status)
effRate += ((double)TBS) / (double)round;
sum_pusch_delay += pusch_vars->delay.est_delay;
min_pusch_delay = min(pusch_vars->delay.est_delay, min_pusch_delay);
max_pusch_delay = max(pusch_vars->delay.est_delay, max_pusch_delay);
delay_pusch_est_count++;
if (do_SRS == 1) {
DevAssert(UL_INFO.srs_ind.number_of_pdus == 1); // there must be SRS indication
const nfapi_nr_srs_indication_pdu_t *srs_ind = &UL_INFO.srs_ind.pdu_list[0];
DevAssert(srs_ind->srs_usage == NFAPI_NR_SRS_BEAMMANAGEMENT);
nfapi_nr_srs_beamforming_report_t bf_rep;
unpack_nr_srs_beamforming_report((void *)srs_ind->report_tlv.value, srs_ind->report_tlv.length, &bf_rep, sizeof(bf_rep));
DevAssert(bf_rep.wide_band_snr != 0xff);
int8_t snr = (bf_rep.wide_band_snr >> 1) - 64;
sum_srs_snr += snr;
srs_snr_count++;
}
} // trial loop
roundStats/=((float)n_trials);
effRate /= (double)n_trials;
// -------csv file-------
// adding values into file
printf("*****************************************\n");
printf("SNR %f: n_errors (%d/%d", SNR, n_errors[0], round_trials[0]);
for (int r = 1; r < max_rounds; r++)
printf(",%d/%d", n_errors[r], round_trials[r]);
printf(") (negative CRC), false_positive %d/%d, errors_scrambling (%u/%u",
n_false_positive, n_trials, errors_scrambling[0], available_bits * round_trials[0]);
for (int r = 1; r < max_rounds; r++)
printf(",%u/%u", errors_scrambling[r], available_bits * round_trials[r]);
printf(")\n");
printf("\n");
for (int r = 0; r < max_rounds; r++) {
blerStats[r] = (double)n_errors[r] / round_trials[r];
berStats[r] = (double)errors_scrambling[r] / available_bits/round_trials[r];
}
effTP = effRate/(double)TBS * (double)100;
printf("SNR %f: Channel BLER (%e", SNR, blerStats[0]);
for (int r = 1; r < max_rounds; r++)
printf(",%e", blerStats[r]);
printf(" Channel BER (%e", berStats[0]);
for (int r = 1; r < max_rounds; r++)
printf(",%e", berStats[r]);
printf(") Avg round %.2f, Eff Rate %.4f bits/slot, Eff Throughput %.2f, TBS %u bits/slot\n", roundStats,effRate,effTP,TBS);
double av_delay = (double)sum_pusch_delay / (2 * delay_pusch_est_count);
printf("DMRS-PUSCH delay estimation: min %i, max %i, average %2.1f\n", min_pusch_delay >> 1, max_pusch_delay >> 1, av_delay);
if (do_SRS == 1) {
float srs_snr_av = (float)sum_srs_snr / srs_snr_count;
srs_ret = srs_snr_av >= 0.7 * SNR || srs_snr_av > 30 ? 0 : 1;
printf("SNR based on SRS: %2.1f dB\n", srs_snr_av);
}
printf("*****************************************\n");
printf("\n");
// writing to csv file
if (filename_csv) { // means we are asked to print stats to CSV
fprintf(csv_file,"%f,%d/%d,",SNR,n_false_positive,n_trials);
for (int r = 0; r < max_rounds; r++)
fprintf(csv_file,"%d/%d,%u/%u,%f,%e,",n_errors[r], round_trials[r], errors_scrambling[r], available_bits * round_trials[r],blerStats[r],berStats[r]);
fprintf(csv_file,"%.2f,%.4f,%.2f,%u,(%i,%i,%f)\n", roundStats, effRate, effTP, TBS,min_pusch_delay >> 1, max_pusch_delay >> 1, (double)sum_pusch_delay / (2 * delay_pusch_est_count));
}
FILE *fd=fopen("nr_ulsim.log","w");
if (fd == NULL) {
printf("Problem with filename %s\n", "nr_ulsim.log");
exit(-1);
}
dump_pusch_stats(fd,gNB);
fclose(fd);
if (print_perf==1)
{
printf("UE TX\n");
for (int i = PHY_PROC_TX; i <= OFDM_MOD_STATS; i++) {
printStatIndent(&UE->phy_cpu_stats.cpu_time_stats[i], UE->phy_cpu_stats.cpu_time_stats[i].meas_name);
}
printf("\ngNB RX\n");
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");
printStatIndent3(&gNB->pusch_channel_estimation_antenna_processing_stats, "Antenna Processing time");
printStatIndent2(&gNB->rx_pusch_init_stats, "RX PUSCH Initialization time");
printStatIndent2(&gNB->rx_pusch_symbol_processing_stats, "RX PUSCH Symbol Processing time");
gNB->pusch_extraction_stats.trials = gNB->rx_pusch_symbol_processing_stats.trials;
printStatIndent3(&gNB->pusch_extraction_stats, "RX PUSCH extraction");
gNB->pusch_channel_compensation_stats.trials = gNB->rx_pusch_symbol_processing_stats.trials;
printStatIndent3(&gNB->pusch_channel_compensation_stats, "RX PUSCH channel compensation");
gNB->ulsch_llr_stats.trials = gNB->rx_pusch_symbol_processing_stats.trials;
printStatIndent3(&gNB->ulsch_llr_stats, "RX PUSCH LLR");
gNB->ulsch_layer_demapping_and_unscrambling_stats.trials = gNB->rx_pusch_symbol_processing_stats.trials;
printStatIndent3(&gNB->ulsch_layer_demapping_and_unscrambling_stats, "RX PUSCH layer demapping and unscrambling");
printStatIndent(&gNB->ulsch_decoding_stats,"ULSCH total decoding time");
gNB->ts_deinterleave.trials = n_trials;
printStatIndent2(&gNB->ts_deinterleave, "ULSCH segment deinterleaving time");
gNB->ts_rate_unmatch.trials = n_trials;
printStatIndent2(&gNB->ts_rate_unmatch, "ULSCH segment rate matching time");
gNB->ts_ldpc_decode.trials = n_trials;
printStatIndent2(&gNB->ts_ldpc_decode, "ULSCH segments decoding time");
printStatIndent(&gNB->rx_srs_stats,"RX SRS time");
printStatIndent2(&gNB->generate_srs_stats,"Generate SRS sequence time");
printStatIndent2(&gNB->get_srs_signal_stats,"Get SRS signal time");
printStatIndent2(&gNB->srs_channel_estimation_stats,"SRS channel estimation time");
printStatIndent2(&gNB->srs_timing_advance_stats,"SRS timing advance estimation time");
printStatIndent2(&gNB->srs_report_tlv_stats,"SRS report TLV build time");
printStatIndent3(&gNB->srs_beam_report_stats,"SRS beam report build time");
printStatIndent3(&gNB->srs_iq_matrix_stats,"SRS IQ matrix build time");
if (use_cuda) {
printStatIndent(&pipeline_stats, "GPU Channel Pipeline");
} else {
printStatIndent(&channel_stats, "Multipath Channel (CPU)");
printStatIndent(&noise_stats, "Add Noise (CPU)");
}
printf("\n");
}
if(n_trials==1)
break;
if (srs_ret == 0 && (float)effTP >= eff_tp_check) {
printf("*************\n");
printf("PUSCH test OK\n");
printf("*************\n");
ret = 0;
break;
}
} // 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);
free_MIB_NR(mib);
free_nrLDPC_coding_interface(&gNB->nrLDPC_coding_interface);
if (output_fd)
fclose(output_fd);
if (input_fd)
fclose(input_fd);
// closing csv file
if (filename_csv != NULL) { // means we are asked to print stats to CSV
fclose(csv_file);
free(filename_csv);
}
if (uci_ulsch_matlab_vec)
fclose(uci_ulsch_matlab_vec);
free_and_zero(UE->phy_sim_test_buf);
free(nrPHY_vars_UE_g[0][0]);
free(nrPHY_vars_UE_g[0]);
free(nrPHY_vars_UE_g);
#ifdef CHANNEL_SIM_CUDA
free_cuda_chsim_buffers(use_cuda,
&d_tx_sig,
&d_intermediate_sig,
&d_final_output,
&d_curand_states,
&h_tx_sig_pinned,
&h_final_output_pinned,
&h_channel_coeffs,
&d_channel_coeffs_gpu);
#endif
return ret;
}
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