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@ -22,30 +22,33 @@
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#include "srslte/phy/common/phy_common_nr.h"
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#include "srslte/phy/phch/ra_nr.h"
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int pdsch_nr_init_common(srslte_pdsch_nr_t* q)
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int pdsch_nr_init_common(srslte_pdsch_nr_t* q, const srslte_pdsch_args_t* args)
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{
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for (srslte_mod_t mod = SRSLTE_MOD_BPSK; mod < SRSLTE_MOD_NITEMS; mod++) {
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if (srslte_modem_table_lte(&q->modem_tables[mod], mod) < SRSLTE_SUCCESS) {
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ERROR("Error initialising modem table for %s\n", srslte_mod_string(mod));
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return SRSLTE_ERROR;
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}
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if (args->measure_evm) {
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srslte_modem_table_bytes(&q->modem_tables[mod]);
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}
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}
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return SRSLTE_SUCCESS;
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}
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int srslte_pdsch_nr_init_tx(srslte_pdsch_nr_t* q)
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int srslte_pdsch_nr_init_tx(srslte_pdsch_nr_t* q, const srslte_pdsch_args_t* args)
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{
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if (q == NULL) {
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return SRSLTE_ERROR_INVALID_INPUTS;
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}
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if (pdsch_nr_init_common(q) < SRSLTE_SUCCESS) {
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if (pdsch_nr_init_common(q, args) < SRSLTE_SUCCESS) {
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return SRSLTE_ERROR;
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}
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if (srslte_sch_nr_init_tx(&q->sch)) {
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if (srslte_sch_nr_init_tx(&q->sch, &args->sch)) {
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ERROR("Initialising SCH\n");
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return SRSLTE_ERROR;
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}
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@ -53,24 +56,30 @@ int srslte_pdsch_nr_init_tx(srslte_pdsch_nr_t* q)
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return SRSLTE_SUCCESS;
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}
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int srslte_pdsch_nr_init_rx(srslte_pdsch_nr_t* q)
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int srslte_pdsch_nr_init_rx(srslte_pdsch_nr_t* q, const srslte_pdsch_args_t* args)
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{
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if (q == NULL) {
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if (q == NULL || args == NULL) {
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return SRSLTE_ERROR_INVALID_INPUTS;
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}
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if (pdsch_nr_init_common(q) < SRSLTE_SUCCESS) {
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if (pdsch_nr_init_common(q, args) < SRSLTE_SUCCESS) {
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return SRSLTE_ERROR;
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}
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srslte_sch_nr_decoder_cfg_t decoder_cfg = {};
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decoder_cfg.disable_simd = true;
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if (srslte_sch_nr_init_rx(&q->sch, &decoder_cfg)) {
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if (srslte_sch_nr_init_rx(&q->sch, &args->sch)) {
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ERROR("Initialising SCH\n");
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return SRSLTE_ERROR;
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}
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if (args->measure_evm) {
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q->evm_buffer = srslte_evm_buffer_alloc(8);
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if (q->evm_buffer == NULL) {
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ERROR("Initialising EVM\n");
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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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@ -132,6 +141,10 @@ int srslte_pdsch_nr_set_carrier(srslte_pdsch_nr_t* q,
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return SRSLTE_ERROR;
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}
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if (q->evm_buffer != NULL) {
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srslte_evm_buffer_resize(q->evm_buffer, SRSLTE_SLOT_LEN_RE_NR(q->max_prb) * SRSLTE_MAX_QM);
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}
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return SRSLTE_SUCCESS;
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}
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@ -162,6 +175,10 @@ void srslte_pdsch_nr_free(srslte_pdsch_nr_t* q)
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for (srslte_mod_t mod = SRSLTE_MOD_BPSK; mod < SRSLTE_MOD_NITEMS; mod++) {
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srslte_modem_table_free(&q->modem_tables[mod]);
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}
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if (q->evm_buffer != NULL) {
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srslte_evm_free(q->evm_buffer);
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}
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}
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/**
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@ -498,6 +515,12 @@ static inline int pdsch_nr_decode_codeword(srslte_pdsch_nr_t* q,
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if (srslte_demod_soft_demodulate_b(tb->mod, q->d[tb->cw_idx], llr, tb->nof_re)) {
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return SRSLTE_ERROR;
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}
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// EVM
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if (q->evm_buffer != NULL) {
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res->evm = srslte_evm_run_b(q->evm_buffer, &q->modem_tables[tb->mod], q->d[tb->cw_idx], llr, tb->nof_bits);
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}
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// Change LLR sign
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for (uint32_t i = 0; i < tb->nof_bits; i++) {
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llr[i] = -llr[i];
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