/** * * \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: turbodecoder.h * * Description: Turbo Decoder. * Parallel Concatenated Convolutional Code (PCCC) with two 8-state constituent * encoders and one turbo code internal interleaver. The coding rate of turbo * encoder is 1/3. * MAP_GEN is the MAX-LOG-MAP generic implementation of the decoder. * * Reference: 3GPP TS 36.212 version 10.0.0 Release 10 Sec. 5.1.3.2 *********************************************************************************************/ #ifndef TURBODECODER_GEN_ #define TURBODECODER_GEN_ #include "srslte/config.h" #include "srslte/phy/fec/tc_interl.h" #include "srslte/phy/fec/cbsegm.h" #define SRSLTE_TCOD_RATE 3 #define SRSLTE_TCOD_TOTALTAIL 12 #define SRSLTE_TCOD_MAX_LEN_CB 6144 #define SRSLTE_TCOD_MAX_LEN_CODED (SRSLTE_TCOD_RATE*SRSLTE_TCOD_MAX_LEN_CB+SRSLTE_TCOD_TOTALTAIL) typedef struct SRSLTE_API { int max_long_cb; float *beta; } srslte_map_gen_vl_t; typedef struct SRSLTE_API { int max_long_cb; srslte_map_gen_vl_t dec; float *llr1; float *llr2; float *w; float *syst; float *parity; int current_cbidx; uint32_t current_cb_len; uint32_t n_iter; srslte_tc_interl_t interleaver[SRSLTE_NOF_TC_CB_SIZES]; } srslte_tdec_gen_t; SRSLTE_API int srslte_tdec_gen_init(srslte_tdec_gen_t * h, uint32_t max_long_cb); SRSLTE_API void srslte_tdec_gen_free(srslte_tdec_gen_t * h); SRSLTE_API int srslte_tdec_gen_reset(srslte_tdec_gen_t * h, uint32_t long_cb); SRSLTE_API void srslte_tdec_gen_iteration(srslte_tdec_gen_t * h, float * input, uint32_t long_cb); SRSLTE_API void srslte_tdec_gen_decision(srslte_tdec_gen_t * h, uint8_t *output, uint32_t long_cb); SRSLTE_API void srslte_tdec_gen_decision_byte(srslte_tdec_gen_t * h, uint8_t *output, uint32_t long_cb); SRSLTE_API int srslte_tdec_gen_run_all(srslte_tdec_gen_t * h, float * input, uint8_t *output, uint32_t nof_iterations, uint32_t long_cb); #endif