inet::physicallayer::MpskModulation Class Reference

This modulation implements parameterized phase-shift keying that arranges symbols evenly on a circle. More...

#include <MpskModulation.h>

Inheritance diagram for inet::physicallayer::MpskModulation:

Public Member Functions
	MpskModulation (unsigned int codeWordSize)
virtual	~MpskModulation ()
virtual std::ostream &	printToStream (std::ostream &stream, int level, int evFlags=0) const override
	Prints this object to the provided output stream. More...
virtual double	calculateBER (double snir, Hz bandwidth, bps bitrate) const override
	Returns the bit error rate as a function of the signal to noise and interference ratio, the bandwidth, and the gross (physical) bitrate. More...
virtual double	calculateSER (double snir, Hz bandwidth, bps bitrate) const override
	Returns the symbol error rate as a function of the signal to noise and interference ratio, the bandwidth, and the gross (physical) bitrate. More...
Public Member Functions inherited from inet::physicallayer::ApskModulationBase
	ApskModulationBase (const std::vector< ApskSymbol > *constellation)
virtual const std::vector< ApskSymbol > *	getConstellation () const
virtual unsigned int	getConstellationSize () const override
virtual unsigned int	getCodeWordSize () const override
virtual const ApskSymbol *	mapToConstellationDiagram (const ShortBitVector &symbol) const
virtual ShortBitVector	demapToBitRepresentation (const ApskSymbol *symbol) const
Public Member Functions inherited from inet::IPrintableObject
virtual	~IPrintableObject ()
virtual std::string	printToString () const
virtual std::string	printToString (int level, int evFlags=0) const
virtual std::string	getInfoStringRepresentation (int evFlags=0) const
virtual std::string	getDetailStringRepresentation (int evFlags=0) const
virtual std::string	getDebugStringRepresentation (int evFlags=0) const
virtual std::string	getTraceStringRepresentation (int evFlags=0) const
virtual std::string	getCompleteStringRepresentation (int evFlags=0) const

Additional Inherited Members
Public Types inherited from inet::IPrintableObject
enum	PrintLevel {   PRINT_LEVEL_TRACE, PRINT_LEVEL_DEBUG, PRINT_LEVEL_DETAIL, PRINT_LEVEL_INFO,   PRINT_LEVEL_COMPLETE = INT_MIN }
enum	PrintFlag { PRINT_FLAG_FORMATTED = (1 << 0), PRINT_FLAG_MULTILINE = (1 << 1) }
Static Public Member Functions inherited from inet::physicallayer::ApskModulationBase
const static ApskModulationBase *	findModulation (const char *name)
Protected Attributes inherited from inet::physicallayer::ApskModulationBase
const std::vector< ApskSymbol > *	constellation
const unsigned int	codeWordSize
const unsigned int	constellationSize

Detailed Description

This modulation implements parameterized phase-shift keying that arranges symbols evenly on a circle.

http://en.wikipedia.org/wiki/Phase-shift_keying#Higher-order_PSK

Constructor & Destructor Documentation

MpskModulation()

inet::physicallayer::MpskModulation::MpskModulation

(

unsigned int

codeWordSize

)

                                                        : ApskModulationBase(createConstellation(codeWordSize))
{
}

~MpskModulation()

inet::physicallayer::MpskModulation::~MpskModulation ( )

virtual

{
    delete constellation;
}

Member Function Documentation

calculateBER()

double inet::physicallayer::MpskModulation::calculateBER ( double  snir, Hz  bandwidth, bps  bitrate  ) const

overridevirtual

Returns the bit error rate as a function of the signal to noise and interference ratio, the bandwidth, and the gross (physical) bitrate.

Implements inet::physicallayer::IModulation.

{
    // http://www.dsplog.com/2008/05/18/bit-error-rate-for-16psk-modulation-using-gray-mapping/
    double ber = erfc(sqrt(snir) * sin(M_PI / constellationSize)) / codeWordSize;
    ASSERT(0.0 <= ber && ber <= 1.0);
    return ber;
}

calculateSER()

double inet::physicallayer::MpskModulation::calculateSER ( double  snir, Hz  bandwidth, bps  bitrate  ) const

overridevirtual

Returns the symbol error rate as a function of the signal to noise and interference ratio, the bandwidth, and the gross (physical) bitrate.

Implements inet::physicallayer::IModulation.

{
    // http://www.dsplog.com/2008/03/18/symbol-error-rate-for-16psk/
    double ser = erfc(sqrt(snir) * sin(M_PI / constellationSize));
    ASSERT(0.0 <= ser && ser <= 1.0);
    return ser;
}

printToStream()

std::ostream & inet::physicallayer::MpskModulation::printToStream ( std::ostream &  stream, int  level, int  evFlags = 0  ) const

overridevirtual

Prints this object to the provided output stream.

Reimplemented from inet::physicallayer::ApskModulationBase.

{
    stream << "MPSKModulaiton";
    return ApskModulationBase::printToStream(stream, level);
}

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The documentation for this class was generated from the following files:

• MpskModulation.h
• MpskModulation.cc