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47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 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: demod_soft.h
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*
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* Description: Soft demodulator.
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* Supports BPSK, QPSK, 16QAM and 64QAM.
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 7.1
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*****************************************************************************/
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#ifndef SRSRAN_DEMOD_SOFT_H
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#define SRSRAN_DEMOD_SOFT_H
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#include <stdint.h>
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#include "modem_table.h"
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#include "srsran/config.h"
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SRSRAN_API int srsran_demod_soft_demodulate(srsran_mod_t modulation, const cf_t* symbols, float* llr, int nsymbols);
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SRSRAN_API int srsran_demod_soft_demodulate_s(srsran_mod_t modulation, const cf_t* symbols, short* llr, int nsymbols);
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SRSRAN_API int srsran_demod_soft_demodulate_b(srsran_mod_t modulation, const cf_t* symbols, int8_t* llr, int nsymbols);
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/**
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* @brief Soft-demodulates complex symbols into 8-bit LLR. It forces zero symbols produce zero LLRs.
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* @param modulation Modulation
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* @param symbols Complex symbols
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* @param llr 8-bit LLRs
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* @param nsymbols Number of symbols
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* @return SRSLTE_SUCCESS if the provided pointers are valid, SRSLTE_ERROR code otherwise
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*/
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SRSRAN_API int srsran_demod_soft_demodulate2_b(srsran_mod_t modulation, const cf_t* symbols, int8_t* llr, int nsymbols);
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#endif // SRSRAN_DEMOD_SOFT_H
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