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@ -45,18 +45,21 @@ srslte_cell_t cell = {
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};
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uint32_t cfi = 2;
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uint32_t tbs = 0;
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uint32_t mcs = 0;
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uint32_t subframe = 1;
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srslte_mod_t modulation = SRSLTE_MOD_BPSK;
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uint32_t rv_idx = 0;
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uint16_t rnti = 1234;
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char *input_file = NULL;
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void usage(char *prog) {
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printf("Usage: %s [Lcpsrnfvmt] -l TBS \n", prog);
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printf("\t-m modulation (1: BPSK, 2: QPSK, 3: QAM16, 4: QAM64) [Default BPSK]\n");
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printf("Usage: %s [fmcsrRFpnv] \n", prog);
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printf("\t-f read signal from file [Default generate it with pdsch_encode()]\n");
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printf("\t-m MCS [Default %d]\n", mcs);
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printf("\t-c cell id [Default %d]\n", cell.id);
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printf("\t-s subframe [Default %d]\n", subframe);
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printf("\t-r rv_idx [Default %d]\n", rv_idx);
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printf("\t-f cfi [Default %d]\n", cfi);
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printf("\t-R rnti [Default %d]\n", rnti);
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printf("\t-F cfi [Default %d]\n", cfi);
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printf("\t-p cell.nof_ports [Default %d]\n", cell.nof_ports);
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printf("\t-n cell.nof_prb [Default %d]\n", cell.nof_prb);
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printf("\t-v [set srslte_verbose to debug, default none]\n");
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@ -64,27 +67,13 @@ void usage(char *prog) {
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void parse_args(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "lcpnfvmtsr")) != -1) {
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while ((opt = getopt(argc, argv, "fmcsrRFpnv")) != -1) {
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switch(opt) {
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case 'f':
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input_file = argv[optind];
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break;
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case 'm':
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switch(atoi(argv[optind])) {
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case 1:
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modulation = SRSLTE_MOD_BPSK;
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break;
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case 2:
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modulation = SRSLTE_MOD_QPSK;
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break;
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case 4:
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modulation = SRSLTE_MOD_16QAM;
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break;
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case 6:
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modulation = SRSLTE_MOD_64QAM;
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break;
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default:
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fprintf(stderr, "Invalid modulation %d. Possible values: "
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"(1: BPSK, 2: QPSK, 3: QAM16, 4: QAM64)\n", atoi(argv[optind]));
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break;
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}
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mcs = atoi(argv[optind]);
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break;
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case 's':
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subframe = atoi(argv[optind]);
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@ -92,8 +81,11 @@ void parse_args(int argc, char **argv) {
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case 'r':
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rv_idx = atoi(argv[optind]);
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break;
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case 'l':
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tbs = atoi(argv[optind]);
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case 'R':
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rnti = atoi(argv[optind]);
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break;
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case 'F':
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cfi = atoi(argv[optind]);
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break;
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case 'p':
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cell.nof_ports = atoi(argv[optind]);
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@ -112,10 +104,6 @@ void parse_args(int argc, char **argv) {
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exit(-1);
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}
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}
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if (tbs == 0) {
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usage(argv[0]);
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exit(-1);
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}
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}
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int main(int argc, char **argv) {
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@ -140,18 +128,19 @@ int main(int argc, char **argv) {
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bzero(&softbuffer_rx, sizeof(srslte_softbuffer_rx_t));
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bzero(&softbuffer_tx, sizeof(srslte_softbuffer_tx_t));
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srslte_ra_dl_dci_t dci;
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bzero(&dci, sizeof(srslte_ra_dl_dci_t));
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dci.mcs_idx = mcs;
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dci.rv_idx = rv_idx;
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dci.type0_alloc.rbg_bitmask = 0xffffffff;
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srslte_ra_dl_grant_t grant;
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grant.mcs.tbs = tbs;
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grant.mcs.mod = modulation;
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grant.Qm = srslte_mod_bits_x_symbol(grant.mcs.mod);
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grant.nof_prb = cell.nof_prb; // Allocate all PRB
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for (i=0;i<grant.nof_prb;i++) {
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grant.prb_idx[0][i] = true;
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if (srslte_ra_dl_dci_to_grant(&dci, cell.nof_prb, true, &grant)) {
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fprintf(stderr, "Error computing resource allocation\n");
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return ret;
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}
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memcpy(&grant.prb_idx[1], &grant.prb_idx[0], SRSLTE_MAX_PRB * sizeof(bool));
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/* Configure PDSCH */
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if (srslte_pdsch_cfg(&pdsch_cfg, cell, &grant, cfi, subframe, 1234, 0)) {
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if (srslte_pdsch_cfg(&pdsch_cfg, cell, &grant, cfi, subframe, 0)) {
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fprintf(stderr, "Error configuring PDSCH\n");
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exit(-1);
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}
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@ -173,7 +162,7 @@ int main(int argc, char **argv) {
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}
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}
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data = malloc(sizeof(uint8_t) * tbs/8);
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data = malloc(sizeof(uint8_t) * grant.mcs.tbs/8);
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if (!data) {
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perror("malloc");
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goto quit;
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@ -184,7 +173,7 @@ int main(int argc, char **argv) {
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goto quit;
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}
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srslte_pdsch_set_rnti(&pdsch, 1234);
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srslte_pdsch_set_rnti(&pdsch, rnti);
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if (srslte_softbuffer_tx_init(&softbuffer_tx, cell.nof_prb)) {
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fprintf(stderr, "Error initiating TX soft buffer\n");
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@ -196,6 +185,17 @@ int main(int argc, char **argv) {
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goto quit;
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}
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if (input_file) {
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srslte_filesource_t fsrc;
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if (srslte_filesource_init(&fsrc, input_file, SRSLTE_COMPLEX_FLOAT_BIN)) {
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fprintf(stderr, "Error opening file %s\n", input_file);
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exit(-1);
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}
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srslte_filesource_read(&fsrc, slot_symbols[0], SRSLTE_SF_LEN_RE(cell.nof_prb, cell.cp));
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srslte_filesource_free(&fsrc);
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}
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if (SRSLTE_VERBOSE_ISNONE()) {
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printf("Decoding TBS: %d\r",grant.mcs.tbs);
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}
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@ -207,11 +207,13 @@ int main(int argc, char **argv) {
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pdsch_cfg.rv = rv;
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if (srslte_pdsch_encode(&pdsch, &pdsch_cfg, &softbuffer_tx, data, slot_symbols)) {
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fprintf(stderr, "Error encoding PDSCH\n");
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goto quit;
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if (!input_file) {
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if (srslte_pdsch_encode(&pdsch, &pdsch_cfg, &softbuffer_tx, data, slot_symbols)) {
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fprintf(stderr, "Error encoding PDSCH\n");
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goto quit;
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}
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}
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/* combine outputs */
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for (i=0;i<cell.nof_ports;i++) {
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for (j=0;j<SRSLTE_SF_LEN_RE(cell.nof_prb, cell.cp);j++) {
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ismagom
9 years ago