mirror of https://github.com/PentHertz/srsLTE.git
133 lines
4.6 KiB
C
133 lines
4.6 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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/******************************************************************************
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* File: sch.h
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*
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* Description: Common UL and DL shared channel encode/decode functions.
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*
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* Reference: 3GPP TS 36.212 version 10.0.0 Release 10
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*****************************************************************************/
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#ifndef SRSLTE_SCH_H
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#define SRSLTE_SCH_H
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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#include "srslte/phy/fec/crc.h"
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#include "srslte/phy/fec/turbo/rm_turbo.h"
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#include "srslte/phy/fec/turbo/turbocoder.h"
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#include "srslte/phy/fec/turbo/turbodecoder.h"
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#include "srslte/phy/phch/pdsch_cfg.h"
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#include "srslte/phy/phch/pusch_cfg.h"
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#include "srslte/phy/phch/uci.h"
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#ifndef SRSLTE_RX_NULL
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#define SRSLTE_RX_NULL 10000
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#endif
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#ifndef SRSLTE_TX_NULL
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#define SRSLTE_TX_NULL 100
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#endif
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/* DL-SCH AND UL-SCH common functions */
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typedef struct SRSLTE_API {
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uint32_t max_iterations;
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float avg_iterations;
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bool llr_is_8bit;
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/* buffers */
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uint8_t* cb_in;
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uint8_t* parity_bits;
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void* e;
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uint8_t* temp_g_bits;
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uint32_t* ul_interleaver;
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srslte_uci_bit_t ack_ri_bits[57600]; // 4*M_sc*Qm_max for RI and ACK
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srslte_tcod_t encoder;
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srslte_tdec_t decoder;
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srslte_crc_t crc_tb;
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srslte_crc_t crc_cb;
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srslte_uci_cqi_pusch_t uci_cqi;
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} srslte_sch_t;
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SRSLTE_API int srslte_sch_init(srslte_sch_t* q);
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SRSLTE_API void srslte_sch_free(srslte_sch_t* q);
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SRSLTE_API void srslte_sch_set_max_noi(srslte_sch_t* q, uint32_t max_iterations);
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SRSLTE_API float srslte_sch_last_noi(srslte_sch_t* q);
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SRSLTE_API int srslte_dlsch_encode(srslte_sch_t* q, srslte_pdsch_cfg_t* cfg, uint8_t* data, uint8_t* e_bits);
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SRSLTE_API int srslte_dlsch_encode2(srslte_sch_t* q,
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srslte_pdsch_cfg_t* cfg,
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uint8_t* data,
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uint8_t* e_bits,
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int codeword_idx,
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uint32_t nof_layers);
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SRSLTE_API int srslte_dlsch_decode(srslte_sch_t* q, srslte_pdsch_cfg_t* cfg, int16_t* e_bits, uint8_t* data);
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SRSLTE_API int srslte_dlsch_decode2(srslte_sch_t* q,
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srslte_pdsch_cfg_t* cfg,
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int16_t* e_bits,
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uint8_t* data,
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int codeword_idx,
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uint32_t nof_layers);
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SRSLTE_API int srslte_ulsch_encode(srslte_sch_t* q,
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srslte_pusch_cfg_t* cfg,
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uint8_t* data,
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srslte_uci_value_t* uci_data,
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uint8_t* g_bits,
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uint8_t* q_bits);
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SRSLTE_API int srslte_ulsch_decode(srslte_sch_t* q,
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srslte_pusch_cfg_t* cfg,
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int16_t* q_bits,
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int16_t* g_bits,
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uint8_t* c_seq,
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uint8_t* data,
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srslte_uci_value_t* uci_data);
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SRSLTE_API float srslte_sch_beta_cqi(uint32_t I_cqi);
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SRSLTE_API float srslte_sch_beta_ack(uint32_t I_harq);
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SRSLTE_API uint32_t srslte_sch_find_Ioffset_ack(float beta);
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SRSLTE_API uint32_t srslte_sch_find_Ioffset_cqi(float beta);
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SRSLTE_API uint32_t srslte_sch_find_Ioffset_ri(float beta);
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///< Sidelink uses PUSCH Interleaver in all channels
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SRSLTE_API void srslte_sl_ulsch_interleave(uint8_t* g_bits,
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uint32_t Qm,
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uint32_t H_prime_total,
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uint32_t N_pusch_symbs,
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uint8_t* q_bits);
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///< Sidelink uses PUSCH Deinterleaver in all channels
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SRSLTE_API void srslte_sl_ulsch_deinterleave(int16_t* q_bits,
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uint32_t Qm,
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uint32_t H_prime_total,
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uint32_t N_pusch_symbs,
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int16_t* g_bits,
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uint32_t* inteleaver_lut);
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#endif // SRSLTE_SCH_H
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