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272 lines
8.1 KiB
C
272 lines
8.1 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#include "srslte/phy/enb/enb_dl_nr.h"
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#include "srslte/phy/phch/ra_nr.h"
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#include "srslte/phy/ue/ue_dl_nr.h"
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#include "srslte/phy/ue/ue_dl_nr_data.h"
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#include "srslte/phy/utils/debug.h"
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#include "srslte/phy/utils/random.h"
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#include "srslte/phy/utils/vector.h"
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#include <getopt.h>
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static srslte_carrier_nr_t carrier = {
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0, // cell_id
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0, // numerology
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100, // nof_prb
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0, // start
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1 // max_mimo_layers
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};
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static uint32_t n_prb = 0; // Set to 0 for steering
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static uint32_t mcs = 30; // Set to 30 for steering
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static srslte_pdsch_cfg_nr_t pdsch_cfg = {};
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static srslte_pdsch_grant_nr_t pdsch_grant = {};
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void usage(char* prog)
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{
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printf("Usage: %s [pTL] \n", prog);
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printf("\t-p Number of grant PRB, set to 0 for steering [Default %d]\n", n_prb);
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printf("\t-m MCS PRB, set to >28 for steering [Default %d]\n", mcs);
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printf("\t-T Provide MCS table (64qam, 256qam, 64qamLowSE) [Default %s]\n",
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srslte_mcs_table_to_str(pdsch_cfg.sch_cfg.mcs_table));
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printf("\t-L Provide number of layers [Default %d]\n", carrier.max_mimo_layers);
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printf("\t-v [set srslte_verbose to debug, default none]\n");
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}
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int parse_args(int argc, char** argv)
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{
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int opt;
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while ((opt = getopt(argc, argv, "pmTLv")) != -1) {
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switch (opt) {
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case 'p':
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n_prb = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'm':
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mcs = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'T':
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pdsch_cfg.sch_cfg.mcs_table = srslte_mcs_table_from_str(argv[optind]);
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break;
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case 'L':
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carrier.max_mimo_layers = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'v':
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srslte_verbose++;
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break;
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default:
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usage(argv[0]);
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return SRSLTE_ERROR;
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}
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}
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return SRSLTE_SUCCESS;
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}
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int main(int argc, char** argv)
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{
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int ret = SRSLTE_ERROR;
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srslte_enb_dl_nr_t enb_dl = {};
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srslte_ue_dl_nr_t ue_dl = {};
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srslte_pdsch_res_nr_t pdsch_res[SRSLTE_MAX_TB] = {};
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srslte_random_t rand_gen = srslte_random_init(1234);
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srslte_dl_slot_cfg_t slot = {};
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uint8_t* data_tx[SRSLTE_MAX_TB] = {};
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uint8_t* data_rx[SRSLTE_MAX_CODEWORDS] = {};
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cf_t* buffer = NULL;
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buffer = srslte_vec_cf_malloc(SRSLTE_SF_LEN_PRB(carrier.nof_prb));
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if (buffer == NULL) {
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ERROR("Error malloc\n");
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goto clean_exit;
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}
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srslte_ue_dl_nr_args_t ue_dl_args = {};
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ue_dl_args.nof_rx_antennas = 1;
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ue_dl_args.pdsch.sch.disable_simd = true;
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ue_dl_args.pdsch.measure_evm = true;
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srslte_enb_dl_nr_args_t enb_dl_args = {};
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enb_dl_args.nof_tx_antennas = 1;
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enb_dl_args.pdsch.sch.disable_simd = true;
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// Set default PDSCH configuration
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pdsch_cfg.sch_cfg.mcs_table = srslte_mcs_table_64qam;
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if (parse_args(argc, argv) < SRSLTE_SUCCESS) {
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goto clean_exit;
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}
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srslte_pdsch_args_t pdsch_args = {};
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pdsch_args.sch.disable_simd = true;
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pdsch_args.measure_evm = true;
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if (srslte_ue_dl_nr_init(&ue_dl, &buffer, &ue_dl_args)) {
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ERROR("Error UE DL\n");
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goto clean_exit;
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}
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if (srslte_enb_dl_nr_init(&enb_dl, &buffer, &enb_dl_args)) {
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ERROR("Error UE DL\n");
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goto clean_exit;
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}
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if (srslte_ue_dl_nr_set_carrier(&ue_dl, &carrier)) {
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ERROR("Error setting SCH NR carrier\n");
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goto clean_exit;
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}
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if (srslte_enb_dl_nr_set_carrier(&enb_dl, &carrier)) {
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ERROR("Error setting SCH NR carrier\n");
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goto clean_exit;
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}
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for (uint32_t i = 0; i < 1; i++) {
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data_tx[i] = srslte_vec_u8_malloc(SRSLTE_SLOT_MAX_NOF_BITS_NR);
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data_rx[i] = srslte_vec_u8_malloc(SRSLTE_SLOT_MAX_NOF_BITS_NR);
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if (data_tx[i] == NULL || data_rx[i] == NULL) {
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ERROR("Error malloc\n");
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goto clean_exit;
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}
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pdsch_res[i].payload = data_rx[i];
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}
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srslte_softbuffer_tx_t softbuffer_tx = {};
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srslte_softbuffer_rx_t softbuffer_rx = {};
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if (srslte_softbuffer_tx_init_guru(&softbuffer_tx, SRSLTE_SCH_NR_MAX_NOF_CB_LDPC, SRSLTE_LDPC_MAX_LEN_ENCODED_CB) <
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SRSLTE_SUCCESS) {
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ERROR("Error init soft-buffer\n");
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goto clean_exit;
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}
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if (srslte_softbuffer_rx_init_guru(&softbuffer_rx, SRSLTE_SCH_NR_MAX_NOF_CB_LDPC, SRSLTE_LDPC_MAX_LEN_ENCODED_CB) <
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SRSLTE_SUCCESS) {
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ERROR("Error init soft-buffer\n");
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goto clean_exit;
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}
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// Use grant default A time resources with m=0
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if (srslte_ue_dl_nr_pdsch_time_resource_default_A(0, pdsch_cfg.dmrs_cfg_typeA.typeA_pos, &pdsch_grant) <
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SRSLTE_SUCCESS) {
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ERROR("Error loading default grant\n");
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goto clean_exit;
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}
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pdsch_grant.nof_layers = carrier.max_mimo_layers;
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pdsch_grant.dci_format = srslte_dci_format_nr_1_0;
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uint32_t n_prb_start = 1;
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uint32_t n_prb_end = carrier.nof_prb + 1;
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if (n_prb > 0) {
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n_prb_start = SRSLTE_MIN(n_prb, n_prb_end - 1);
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n_prb_end = SRSLTE_MIN(n_prb + 1, n_prb_end);
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}
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uint32_t mcs_start = 0;
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uint32_t mcs_end = pdsch_cfg.sch_cfg.mcs_table == srslte_mcs_table_256qam ? 28 : 29;
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if (mcs < mcs_end) {
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mcs_start = SRSLTE_MIN(mcs, mcs_end - 1);
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mcs_end = SRSLTE_MIN(mcs + 1, mcs_end);
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}
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for (n_prb = n_prb_start; n_prb < n_prb_end; n_prb++) {
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for (mcs = mcs_start; mcs < mcs_end; mcs++) {
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for (uint32_t n = 0; n < SRSLTE_MAX_PRB_NR; n++) {
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pdsch_grant.prb_idx[n] = (n < n_prb);
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}
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if (srslte_ra_nr_fill_tb(&pdsch_cfg, &pdsch_grant, mcs, &pdsch_grant.tb[0]) < SRSLTE_SUCCESS) {
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ERROR("Error filing tb\n");
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goto clean_exit;
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}
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for (uint32_t tb = 0; tb < SRSLTE_MAX_TB; tb++) {
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// Skip TB if no allocated
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if (data_tx[tb] == NULL) {
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continue;
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}
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for (uint32_t i = 0; i < pdsch_grant.tb[tb].tbs; i++) {
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data_tx[tb][i] = (uint8_t)srslte_random_uniform_int_dist(rand_gen, 0, UINT8_MAX);
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}
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pdsch_grant.tb[tb].softbuffer.tx = &softbuffer_tx;
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}
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if (srslte_enb_dl_nr_pdsch_put(&enb_dl, &slot, &pdsch_cfg, &pdsch_grant, data_tx) < SRSLTE_SUCCESS) {
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ERROR("Error encoding\n");
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goto clean_exit;
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}
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srslte_enb_dl_nr_gen_signal(&enb_dl);
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for (uint32_t tb = 0; tb < SRSLTE_MAX_TB; tb++) {
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pdsch_grant.tb[tb].softbuffer.rx = &softbuffer_rx;
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srslte_softbuffer_rx_reset(pdsch_grant.tb[tb].softbuffer.rx);
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}
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srslte_ue_dl_nr_estimate_fft(&ue_dl);
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if (srslte_ue_dl_nr_pdsch_get(&ue_dl, &slot, &pdsch_cfg, &pdsch_grant, pdsch_res) < SRSLTE_SUCCESS) {
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ERROR("Error decoding\n");
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goto clean_exit;
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}
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if (pdsch_res->evm > 0.001f) {
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ERROR("Error PDSCH EVM is too high %f\n", pdsch_res->evm);
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goto clean_exit;
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}
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if (!pdsch_res[0].crc) {
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ERROR("Failed to match CRC; n_prb=%d; mcs=%d; TBS=%d;\n", n_prb, mcs, pdsch_grant.tb[0].tbs);
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goto clean_exit;
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}
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if (memcmp(data_tx[0], data_rx[0], pdsch_grant.tb[0].tbs / 8) != 0) {
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ERROR("Failed to match Tx/Rx data; n_prb=%d; mcs=%d; TBS=%d;\n", n_prb, mcs, pdsch_grant.tb[0].tbs);
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printf("Tx data: ");
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srslte_vec_fprint_byte(stdout, data_tx[0], pdsch_grant.tb[0].tbs / 8);
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printf("Rx data: ");
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srslte_vec_fprint_byte(stdout, data_rx[0], pdsch_grant.tb[0].tbs / 8);
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goto clean_exit;
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}
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printf("n_prb=%d; mcs=%d; TBS=%d; EVM=%f; PASSED!\n", n_prb, mcs, pdsch_grant.tb[0].tbs, pdsch_res[0].evm);
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}
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}
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ret = SRSLTE_SUCCESS;
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clean_exit:
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srslte_random_free(rand_gen);
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srslte_enb_dl_nr_free(&enb_dl);
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srslte_ue_dl_nr_free(&ue_dl);
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for (uint32_t i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
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if (data_tx[i]) {
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free(data_tx[i]);
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}
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if (data_rx[i]) {
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free(data_rx[i]);
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}
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}
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if (buffer) {
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free(buffer);
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}
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srslte_softbuffer_tx_free(&softbuffer_tx);
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srslte_softbuffer_rx_free(&softbuffer_rx);
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return ret;
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}
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