BSC_Channel.h

/*
 * BSC_Channel.h
 *
 *  Created on: 23 Dec, 2014
 \*      Author: Mehrdad Tahernia
 */

#ifndef BSC_CHANNEL_H_
#define BSC_CHANNEL_H_

#include "Channel.h"
class LDPC_Code; //defined in LDPC.h, but header is not needed so we use forward declerations

/****************************************************************************
 *
 * BSC Channel
 *
 ****************************************************************************/

/**
 * BSC Channel, which is a child of Channel.
 * It is only useful for binary channels
 */
class BSC_Channel: public channel {
private:
	double channel_p;			///< Bit flip probability for BSC
	double source_p;				///< Input source // Not Used!
	double InterferenceProb; ///< Dirty paper, I guess this value is unused here

public:
	// General functions ------------------------------------------

	BSC_Channel() :	channel_p(0), source_p(0.5), InterferenceProb(0.5) { }
	void SetChannel_p(double p_channel_p) {	channel_p = p_channel_p;}

	int Flip(double prob) {	return (my_rand() < prob);}

	const char *GetChannelName() {	return "BSC_Channel";}
	virtual void PrintChannelData(LDPC_Code &Code);
	virtual void ProcessMapping(LDPC_Code &Code);

	// Channel coding functions -----------------------------------
	virtual double SimulateOutput(double ChannelInput);
	virtual double CalcProbForInput(double ChannelOutput, double ChannelInput);

	// Statistical functions -------------------------------------
	virtual double CapacityInBits();
	virtual double CalcProbForOutput(double ChannelOutput);
};


#endif /* BSC_CHANNEL_H_ */