/** * * \section COPYRIGHT * * Copyright 2013-2015 Software Radio Systems Limited * * \section LICENSE * * This file is part of the srsLTE library. * * srsLTE is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsLTE is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ /********************************************************************************************** * File: refsignal_ul.h * * Description: Object to manage uplink reference signals for channel estimation. * * Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 5.5 *********************************************************************************************/ #ifndef SRSLTE_REFSIGNAL_UL_H #define SRSLTE_REFSIGNAL_UL_H #include "srslte/config.h" #include "srslte/phy/common/phy_common.h" #include "srslte/phy/phch/pucch_cfg.h" #include "srslte/phy/phch/pusch_cfg.h" #define SRSLTE_NOF_GROUPS_U 30 #define SRSLTE_NOF_SEQUENCES_U 2 #define SRSLTE_NOF_DELTA_SS 30 #define SRSLTE_NOF_CSHIFT 8 #define SRSLTE_REFSIGNAL_UL_L(ns_idx, cp) ((ns_idx+1)*SRSLTE_CP_NSYMB(cp)-4) /* PUSCH DMRS common configuration (received in SIB2) */ typedef struct SRSLTE_API { uint32_t cyclic_shift; uint32_t delta_ss; bool group_hopping_en; bool sequence_hopping_en; } srslte_refsignal_dmrs_pusch_cfg_t; typedef struct SRSLTE_API { // Common Configuration uint32_t subframe_config; uint32_t bw_cfg; bool simul_ack; // Dedicated configuration uint32_t B; uint32_t b_hop; uint32_t n_srs; uint32_t I_srs; uint32_t k_tc; uint32_t n_rrc; bool configured; } srslte_refsignal_srs_cfg_t; /** Uplink DeModulation Reference Signal (DMRS) */ typedef struct SRSLTE_API { srslte_cell_t cell; float* tmp_arg; uint32_t n_cs_cell[SRSLTE_NSLOTS_X_FRAME][SRSLTE_CP_NORM_NSYMB]; uint32_t n_prs_pusch[SRSLTE_NOF_DELTA_SS][SRSLTE_NSLOTS_X_FRAME]; // We precompute n_prs needed for cyclic shift alpha at srslte_refsignal_dl_init() uint32_t f_gh[SRSLTE_NSLOTS_X_FRAME]; uint32_t u_pucch[SRSLTE_NSLOTS_X_FRAME]; uint32_t v_pusch[SRSLTE_NSLOTS_X_FRAME][SRSLTE_NOF_DELTA_SS]; } srslte_refsignal_ul_t; typedef struct { cf_t** r[SRSLTE_NOF_CSHIFT][SRSLTE_NOF_SF_X_FRAME]; } srslte_refsignal_ul_dmrs_pregen_t; typedef struct { cf_t* r[SRSLTE_NOF_SF_X_FRAME]; } srslte_refsignal_srs_pregen_t; SRSLTE_API int srslte_refsignal_ul_init(srslte_refsignal_ul_t *q, uint32_t max_prb); SRSLTE_API int srslte_refsignal_ul_set_cell(srslte_refsignal_ul_t *q, srslte_cell_t cell); SRSLTE_API void srslte_refsignal_ul_free(srslte_refsignal_ul_t *q); SRSLTE_API void srslte_refsignal_r_uv_arg_1prb(float* arg, uint32_t u); SRSLTE_API uint32_t srslte_refsignal_dmrs_N_rs(srslte_pucch_format_t format, srslte_cp_t cp); SRSLTE_API uint32_t srslte_refsignal_dmrs_pucch_symbol(uint32_t m, srslte_pucch_format_t format, srslte_cp_t cp); SRSLTE_API int srslte_refsignal_dmrs_pusch_pregen_init(srslte_refsignal_ul_dmrs_pregen_t* pregen, uint32_t max_prb); SRSLTE_API int srslte_refsignal_dmrs_pusch_pregen(srslte_refsignal_ul_t* q, srslte_refsignal_ul_dmrs_pregen_t* pregen, srslte_refsignal_dmrs_pusch_cfg_t* cfg); SRSLTE_API void srslte_refsignal_dmrs_pusch_pregen_free(srslte_refsignal_ul_t* q, srslte_refsignal_ul_dmrs_pregen_t* pregen); SRSLTE_API int srslte_refsignal_dmrs_pusch_pregen_put(srslte_refsignal_ul_t* q, srslte_ul_sf_cfg_t* sf_cfg, srslte_refsignal_ul_dmrs_pregen_t* pregen, srslte_pusch_cfg_t* pusch_cfg, cf_t* sf_symbols); SRSLTE_API int srslte_refsignal_dmrs_pusch_gen(srslte_refsignal_ul_t* q, srslte_refsignal_dmrs_pusch_cfg_t* cfg, uint32_t nof_prb, uint32_t sf_idx, uint32_t cyclic_shift_for_dmrs, cf_t* r_pusch); SRSLTE_API void srslte_refsignal_dmrs_pusch_put(srslte_refsignal_ul_t* q, srslte_pusch_cfg_t* pusch_cfg, cf_t* r_pusch, cf_t* sf_symbols); SRSLTE_API void srslte_refsignal_dmrs_pusch_get(srslte_refsignal_ul_t* q, srslte_pusch_cfg_t* pusch_cfg, cf_t* sf_symbols, cf_t* r_pusch); SRSLTE_API int srslte_refsignal_dmrs_pucch_gen(srslte_refsignal_ul_t* q, srslte_ul_sf_cfg_t* sf, srslte_pucch_cfg_t* cfg, cf_t* r_pucch); SRSLTE_API int srslte_refsignal_dmrs_pucch_put(srslte_refsignal_ul_t* q, srslte_pucch_cfg_t* cfg, cf_t* r_pucch, cf_t* output); SRSLTE_API int srslte_refsignal_dmrs_pucch_get(srslte_refsignal_ul_t* q, srslte_pucch_cfg_t* cfg, cf_t* input, cf_t* r_pucch); SRSLTE_API int srslte_refsignal_srs_pregen(srslte_refsignal_ul_t* q, srslte_refsignal_srs_pregen_t* pregen, srslte_refsignal_srs_cfg_t* cfg, srslte_refsignal_dmrs_pusch_cfg_t* dmrs); SRSLTE_API int srslte_refsignal_srs_pregen_put(srslte_refsignal_ul_t* q, srslte_refsignal_srs_pregen_t* pregen, srslte_refsignal_srs_cfg_t* cfg, uint32_t tti, cf_t* sf_symbols); SRSLTE_API void srslte_refsignal_srs_pregen_free(srslte_refsignal_ul_t* q, srslte_refsignal_srs_pregen_t* pregen); SRSLTE_API int srslte_refsignal_srs_gen(srslte_refsignal_ul_t* q, srslte_refsignal_srs_cfg_t* cfg, srslte_refsignal_dmrs_pusch_cfg_t* pusch_cfg, uint32_t sf_idx, cf_t* r_srs); SRSLTE_API int srslte_refsignal_srs_put( srslte_refsignal_ul_t* q, srslte_refsignal_srs_cfg_t* cfg, uint32_t tti, cf_t* r_srs, cf_t* sf_symbols); SRSLTE_API void srslte_refsignal_srs_pusch_shortened(srslte_refsignal_ul_t* q, srslte_ul_sf_cfg_t* sf, srslte_refsignal_srs_cfg_t* srs_cfg, srslte_pusch_cfg_t* pusch_cfg); SRSLTE_API void srslte_refsignal_srs_pucch_shortened(srslte_refsignal_ul_t* q, srslte_ul_sf_cfg_t* sf, srslte_refsignal_srs_cfg_t* srs_cfg, srslte_pucch_cfg_t* pucch_cfg); SRSLTE_API int srslte_refsignal_srs_send_cs(uint32_t subframe_config, uint32_t sf_idx); SRSLTE_API int srslte_refsignal_srs_send_ue(uint32_t I_srs, uint32_t tti); SRSLTE_API uint32_t srslte_refsignal_srs_rb_start_cs(uint32_t bw_cfg, uint32_t nof_prb); SRSLTE_API uint32_t srslte_refsignal_srs_rb_L_cs(uint32_t bw_cfg, uint32_t nof_prb); SRSLTE_API uint32_t srslte_refsignal_srs_M_sc(srslte_refsignal_ul_t* q, srslte_refsignal_srs_cfg_t* cfg); #endif // SRSLTE_REFSIGNAL_UL_H