sim_lfsr.hpp

/*xxx
* \brief - SIM::lfsr for linear feedback shift register
* \author maki
*/



#ifndef SIM_LFSR_HPP
#define SIM_LFSR_HPP

#include <itpp/itbase.h>
#include <itpp/comm/sequence.h>

using namespace itpp;
using namespace std;


namespace SIM
{

class lfsr : public itpp::LFSR
{
private:
  bvec y0;              
  bvec s0;              
  int symbol_size;      
  bvec poly_gen;          
  bool rev_flag;          

public:
  lfsr()
  {
    rev_flag = true;   // by default it is not compatible with LFSR to provide easy sync with bit symbols
    symbol_size = 1;
  };
  ~lfsr()
  {

  };

  void set_poly(const bvec &bpoly);

  void set_prbs(int M);

  void set_symbol_size(int W);

  void set_reset_state(const bvec &binit);

  void set_output(const bvec &yout);

  void set_rev_flag(bool flag);

  bvec get_poly();

  bvec get_state();

  int get_symbol_size();

  bvec get_reset_state();

  bvec get_output();

  bool get_rev_flag();


  bmat generate(const bvec &ce);

};


}
#endif //SIM_lfsr