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67 lines
1.8 KiB
C
67 lines
1.8 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: modem_table.h
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*
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* Description: Modem tables used for modulation/demodulation.
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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 SRSLTE_MODEM_TABLE_H
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#define SRSLTE_MODEM_TABLE_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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typedef struct {
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cf_t symbol[8];
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} bpsk_packed_t;
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typedef struct {
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cf_t symbol[4];
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} qpsk_packed_t;
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typedef struct {
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cf_t symbol[2];
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} qam16_packed_t;
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typedef struct SRSLTE_API {
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cf_t* symbol_table; // bit-to-symbol mapping
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uint32_t nsymbols; // number of modulation symbols
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uint32_t nbits_x_symbol; // number of bits per symbol
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bool byte_tables_init;
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bpsk_packed_t* symbol_table_bpsk;
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qpsk_packed_t* symbol_table_qpsk;
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qam16_packed_t* symbol_table_16qam;
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} srslte_modem_table_t;
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SRSLTE_API void srslte_modem_table_init(srslte_modem_table_t* q);
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SRSLTE_API void srslte_modem_table_free(srslte_modem_table_t* q);
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SRSLTE_API void srslte_modem_table_reset(srslte_modem_table_t* q);
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SRSLTE_API int srslte_modem_table_set(srslte_modem_table_t* q, cf_t* table, uint32_t nsymbols, uint32_t nbits_x_symbol);
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SRSLTE_API int srslte_modem_table_lte(srslte_modem_table_t* q, srslte_mod_t modulation);
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SRSLTE_API void srslte_modem_table_bytes(srslte_modem_table_t* q);
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#endif // SRSLTE_MODEM_TABLE_H
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