modulation.h

fso antenna model for ns2

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/* Ported from CMU/Monarch's code, nov'98 -Padma.*/

#ifndef __modulation_h__
#define __modulation_h__

#include <random.h>

/* ======================================================================
   Modulation Schemes

	Using the receive power and information about the modulation
	scheme, amount of forward error correction, etc., this class
	computes whether or not a packet was received correctly or with
	few enough errors that they can be tolerated.

   ====================================================================== */

class Modulation : public TclObject {

public:
	virtual ~Modulation () {}
	// begin RPI FSO Extensions
	virtual int BitError(double Pr,int Size) {return 0;	}// success reception?
	virtual int command(int argc, const char*const* argv);
	// end RPI FSO Extensions

protected:
	int Rs;					// symbol rate per second

private:
	// Probability of 1 bit error
	virtual double ProbBitError(double) { return 0.0; }

	// Probability of n bit errors
	virtual double ProbBitError(double, int) { return 0.0; }	
};


class BPSK : public Modulation {

public:
	// begin RPI FSO Extension
	// BPSK(void);
	// BPSK(int);

	RNG RandomNumberGenerator_;

	virtual int BitError(double Pr, int Size);
	// end RPI FSO Extension
	
	virtual ~BPSK () {}


private:
	virtual double ProbBitError(double Pr);
	virtual double ProbBitError(double Pr, int n);
};

#endif /* __modulation_h__ */