ocsReduPolarizTransformer.hh

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// $Id:
//###################################################################
//
//       Optical Communication Systems Simulator
//
//       Copyright (2000):
//       Optical Fiber Communications Laboratory (OFCL)
//       Computer Science & Electrical Engineering Department (CSEE)
//       University of Maryland Baltimore County (UMBC)
//
//###################################################################

#ifndef _OCS_REDU_POLARIZ_TRANSFORMER_HH_
#define _OCS_REDU_POLARIZ_TRANSFORMER_HH_

#include "ocsReduOptSignal.hh"

#ifndef _OCS_TYPE_SCATTERING_
#define _OCS_TYPE_SCATTERING_
enum typeScattering { RX_RY_RX = 1, 
                      RY_RZ_RY = 2, 
                      RX_RZ_RY = 3};
#endif

//## The options RX_RY_RX and RY_RZ_RY can provide a uniform 
//#  rotation. While RX_RZ_RY is adequate for the importance
//#  sampling applied to PDL. (Ivan Lima)

// ##### Class ReduPolarizTransformer


class ReduPolarizTransformer
{
   public:


      ReduPolarizTransformer( int TypeScattering2, 
                              ReduOptSignal *oReduOptSignalTmp);


      void TransformPolarization( double psi
                                 ,double theta
                                 ,double phi);



      void TransformPolarization( double psi
                                 ,double theta);



      void TransformPolarization(void);


      void UndoLastPolarizTransformation(void);


      string WriteTypeScattering(void);



      void InitImportSampPolarizTransformation(
                             double BiasingParam2,
                             RanNumGen *oRanImportSampPolarizTransform2); 

      void SetBiasingParam(double BiasingParam2) 
            { BiasingParam = BiasingParam2;};





      void GetImportSampPolarizTransformation(
                             int ChannelArrayIndex,
                             double *LikelihoodRatio);

   private:



      typeScattering TypeScattering;



      ReduOptSignal *oReduOptSignal;      


  double psiLast, thetaLast, phiLast;
  

      RanNumGen *oRanImportSampPolarizTransform; 


      double BiasingParam;

      int FlagImportSamplingInitialized;
};

#endif //## _OCS_REDU_POLARIZ_TRANSFORMER_HH_