modem/LDPC1.hpp

// Copyright 2011-2013, Nima Najari Moghadam and Per Zetterberg
//                      KTH Royal Institute of Technology
// 
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//


#ifndef LDPC1_HPP
#define LDPC1_HPP

#include <itpp/itcomm.h>
#include "modem_OFDM1.hpp"
#include <vector>

using namespace itpp;

class LDPC1 {  

   public:
     LDPC1(void) {}; 
     void init(double chan_code_rate, 
               int msg_length, int seed, bool load_from_file, string filename);
     void chan_encode(bvec message, bvec &code_word);
     void chan_decode(vec &soft_input,bvec &message_hat);
     double chan_code_rate(void) {return d_chan_code_rate;};
     int message_length(void) const {return k;};
     int word_length(void) {return Nvar;};
     int seed(void) {return d_seed;};
   private:
     double d_chan_code_rate;
     int k;
     int d_seed;
     Sequence_Interleaver<double> d_interleaver;
     int Nvar;   // codeword length
     LDPC_Generator_Systematic G;
     LDPC_Parity_Regular H;
     LDPC_Code Code;    
     vec code_word1, code_word2; 

  //int Imax;
  //ivec interleaver_sequence;
  //QAM qam;
  //OFDM1 ai;
  //vec LLR;
};


#endif