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57 lines
2.5 KiB
C++
57 lines
2.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2023 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon //
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// reformatted and adapted to Qt and SDRangel context //
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// //
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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 General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU 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 FT8_ARRAYS_H_
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#define FT8_ARRAYS_H_
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#include "export.h"
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namespace FT8 {
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class FT8_API Arrays
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{
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public:
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//
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// this is the LDPC(174,91) parity check matrix.
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// each row describes one parity check.
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// 83 rows.
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// each number is an index into the codeword (1-origin).
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// the codeword bits mentioned in each row must xor to zero.
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// From WSJT-X's ldpc_174_91_c_reordered_parity.f90
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//
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static const int Nm[][7];
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// Mn from WSJT-X's ldpc_174_91_c_reordered_parity.f90
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// each of the 174 rows corresponds to a codeword bit.
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// the numbers indicate which three parity
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// checks (rows in Nm) refer to the codeword bit.
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// 1-origin.
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static const int Mn[][3];
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// This is the LDPC(174, 91) generator matrix
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// It has 83 rows and 91 columns (zero padded on the right thus 12 bytes)
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// From WSJT-X's ldpc_174_91_c_generator.f90
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static const int Gm[][12];
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};
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} // namespace FT8
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#endif // FT8_ARRAYS_H_
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