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60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
/*---------------------------------------------------------------------------*\
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FILE........: interldpc.h
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AUTHOR......: David Rowe
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DATE CREATED: April 2018
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Helper functions for interleaved LDPC modems.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2018 David Rowe
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __INTERLDPC__
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#define __INTERLDPC__
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#include <stdint.h>
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#include "codec2/comp.h"
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#include "mpdecode_core.h"
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#include "ofdm_internal.h"
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namespace FreeDV
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{
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/* CRC type function, used to compare QPSK vectors when debugging */
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COMP test_acc(COMP v[], int n);
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void printf_n(COMP v[], int n);
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void set_up_hra_112_112(struct LDPC *ldpc, struct OFDM_CONFIG *);
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void ldpc_encode_frame(struct LDPC *ldpc, int codeword[], unsigned char tx_bits_char[]);
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void qpsk_modulate_frame(COMP tx_symbols[], int codeword[], int n);
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void interleaver_sync_state_machine(struct OFDM *ofdm, struct LDPC *ldpc, struct OFDM_CONFIG *config,
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COMP codeword_symbols_de[],
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float codeword_amps_de[],
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float EsNo, int interleave_frames,
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int *inter, int *parityCheckCount, int *Nerrs_coded);
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int count_uncoded_errors(struct LDPC *ldpc, struct OFDM_CONFIG *config, int Nerrs_raw[], int interleave_frames, COMP codeword_symbols_de[]);
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int count_errors(uint8_t tx_bits[], uint8_t rx_bits[], int n);
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void ofdm_ldpc_interleave_tx(struct OFDM *ofdm, struct LDPC *ldpc, std::complex<float> tx_sams[], uint8_t tx_bits[], uint8_t txt_bits[], int interleave_frames, struct OFDM_CONFIG *config);
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void build_modulated_uw(struct OFDM *ofdm, std::complex<float> tx_symbols[], uint8_t txt_bits[], struct OFDM_CONFIG *config);
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} // FreeDV
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#endif
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