inet::physicallayer::ConvolutionalCode Class Reference

#include <ConvolutionalCode.h>

Inheritance diagram for inet::physicallayer::ConvolutionalCode:

Public Member Functions
	ConvolutionalCode (const char *transferFunctionMatrix, const char *puncturingMatrix, const char *constraintLengthVector, int codeRatePuncturingK, int codeRatePuncturingN, const char *mode)
int	getCodeRatePuncturingK () const
int	getCodeRatePuncturingN () const
const char *	getConstraintLengthVector () const
const char *	getMode () const
const char *	getPuncturingMatrix () const
const char *	getTransferFunctionMatrix () const
std::ostream &	printToStream (std::ostream &stream, int level) const override
	Prints this object to the provided output stream. More...
virtual double	getCodeRate () const override
virtual int	getEncodedLength (int decodedLength) const override
virtual int	getDecodedLength (int encodedLength) const override
virtual double	computeNetBitErrorRate (double grossBitErrorRate) const override
Public Member Functions inherited from inet::physicallayer::IPrintableObject
virtual	~IPrintableObject ()
virtual std::string	getInfoStringRepresentation () const
virtual std::string	getDetailStringRepresentation () const
virtual std::string	getDebugStringRepresentation () const
virtual std::string	getTraceStringRepresentation () const
virtual std::string	getCompleteStringRepresentation () const

Protected Attributes
const char *	transferFunctionMatrix
const char *	puncturingMatrix
const char *	constraintLengthVector
int	codeRatePuncturingK
int	codeRatePuncturingN
int	memory
const char *	mode

Additional Inherited Members
Public Types inherited from inet::physicallayer::IPrintableObject
enum	PrintLevel {   PRINT_LEVEL_TRACE, PRINT_LEVEL_DEBUG, PRINT_LEVEL_DETAIL, PRINT_LEVEL_INFO,   PRINT_LEVEL_COMPLETE = INT_MIN }

Constructor & Destructor Documentation

inet::physicallayer::ConvolutionalCode::ConvolutionalCode	(	const char *	transferFunctionMatrix,
		const char *	puncturingMatrix,
		const char *	constraintLengthVector,
		int	codeRatePuncturingK,
		int	codeRatePuncturingN,
		const char *	mode
	)

                                                                                                                                                                                                             :
    transferFunctionMatrix(transferFunctionMatrix),
    puncturingMatrix(puncturingMatrix),
    constraintLengthVector(constraintLengthVector),
    codeRatePuncturingK(codeRatePuncturingK),
    codeRatePuncturingN(codeRatePuncturingN),
    memory(0),
    mode(mode)
{
    cStringTokenizer tokenizer(constraintLengthVector);
    while (tokenizer.hasMoreTokens())
        memory = std::max(memory, atoi(tokenizer.nextToken()) - 1);
}

Member Function Documentation

double inet::physicallayer::ConvolutionalCode::computeNetBitErrorRate ( double  grossBitErrorRate ) const

overridevirtual

Implements inet::physicallayer::IForwardErrorCorrection.

{
    double p = grossBitErrorRate;
    double netBitErrorRate;
    if (codeRatePuncturingK == 1 && codeRatePuncturingN == 2) {
        if (memory == 1)
            netBitErrorRate = pow(p, 2) * (14 - 23 * p + 16 * pow(p, 2) + 2 * pow(p, 3) - 16 * pow(p, 4) + 8 * pow(p, 5))
                / ((1 + 3 * pow(p, 2) - 2 * pow(p, 3)) * (2 - p + 4 * pow(p, 2) - 4 * pow(p, 3)));
        else if (memory == 2)
            netBitErrorRate = 44 * pow(p, 3) + 3519.0 / 8.0 * pow(p, 4) - 14351.0 / 32.0 * pow(p, 5) - 1267079.0 / 64.0 * pow(p, 6) - 31646405.0 / 512.0 * pow(p, 7) + 978265739.0 / 2048.0 * pow(p, 8) + 3931764263.0 / 1024.0 * pow(p, 9) - 48978857681.0 / 32768.0 * pow(p, 10);
        else
            throw cRuntimeError("Not yet implemented");
    }
    else
        throw cRuntimeError("Not yet implemented");
    return std::max(std::min(netBitErrorRate, 1.0), 0.0);
}

double inet::physicallayer::ConvolutionalCode::getCodeRate ( ) const

overridevirtual

Implements inet::physicallayer::IForwardErrorCorrection.

{
    return (double)codeRatePuncturingK / codeRatePuncturingN;
}

int inet::physicallayer::ConvolutionalCode::getCodeRatePuncturingK ( ) const

inline

Referenced by inet::physicallayer::Ieee80211OFDMDecoder::calculatePadding(), inet::physicallayer::Ieee80211OFDMModeBase::computeNetBitrate(), inet::physicallayer::APSKLayeredTransmitter::computePaddingLength(), inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder(), inet::physicallayer::Ieee80211LayeredOFDMReceiver::createDataFieldBitModel(), inet::physicallayer::Ieee80211LayeredOFDMReceiver::getCodeRateFromDecoderModule(), inet::physicallayer::Ieee80211NistErrorModel::getOFDMAndERPOFDMChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getOFDMAndERPOFDMChunkSuccessRate().

{ return codeRatePuncturingK; }

int inet::physicallayer::ConvolutionalCode::getCodeRatePuncturingN ( ) const

inline

Referenced by inet::physicallayer::Ieee80211OFDMDecoder::calculatePadding(), inet::physicallayer::Ieee80211OFDMModeBase::computeNetBitrate(), inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder(), inet::physicallayer::Ieee80211LayeredOFDMReceiver::createDataFieldBitModel(), inet::physicallayer::Ieee80211LayeredOFDMReceiver::getCodeRateFromDecoderModule(), inet::physicallayer::Ieee80211NistErrorModel::getOFDMAndERPOFDMChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getOFDMAndERPOFDMChunkSuccessRate().

{ return codeRatePuncturingN; }

const char* inet::physicallayer::ConvolutionalCode::getConstraintLengthVector ( ) const

inline

Referenced by inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder().

{ return constraintLengthVector; }

int inet::physicallayer::ConvolutionalCode::getDecodedLength ( int  encodedLength ) const

overridevirtual

Implements inet::physicallayer::IForwardErrorCorrection.

Referenced by inet::physicallayer::Ieee80211LayeredOFDMTransmitter::appendPadding(), and inet::physicallayer::Ieee80211OFDMDataMode::getDuration().

{
    ASSERT(encodedLength % codeRatePuncturingN == 0);
    return encodedLength * codeRatePuncturingK / codeRatePuncturingN;
}

int inet::physicallayer::ConvolutionalCode::getEncodedLength ( int  decodedLength ) const

overridevirtual

Implements inet::physicallayer::IForwardErrorCorrection.

Referenced by inet::physicallayer::Ieee80211LayeredOFDMTransmitter::createScalarAnalogModel().

{
    ASSERT(decodedLength % codeRatePuncturingK == 0);
    return decodedLength * codeRatePuncturingN / codeRatePuncturingK;
}

const char* inet::physicallayer::ConvolutionalCode::getMode ( ) const

inline

Referenced by inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder().

{ return mode; }

const char* inet::physicallayer::ConvolutionalCode::getPuncturingMatrix ( ) const

inline

Referenced by inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder().

{ return puncturingMatrix; }

const char* inet::physicallayer::ConvolutionalCode::getTransferFunctionMatrix ( ) const

inline

Referenced by inet::physicallayer::ConvolutionalCoder::ConvolutionalCoder().

{ return transferFunctionMatrix; }

std::ostream & inet::physicallayer::ConvolutionalCode::printToStream ( std::ostream &  stream, int  level  ) const

overridevirtual

Prints this object to the provided output stream.

Function calls to operator<< with pointers or references either const or not are all forwarded to this function.

Reimplemented from inet::physicallayer::IPrintableObject.

{
    stream << "ConvolutionalCode";
    if (level <= PRINT_LEVEL_TRACE)
        stream << ", codeRatePuncturingK = " << codeRatePuncturingK
               << ", codeRatePuncturingN = " << codeRatePuncturingN;
    return stream;
}

Member Data Documentation

int inet::physicallayer::ConvolutionalCode::codeRatePuncturingK

protected

Referenced by computeNetBitErrorRate(), getCodeRate(), getDecodedLength(), getEncodedLength(), inet::physicallayer::Ieee80211ConvolutionalCode::Ieee80211ConvolutionalCode(), and printToStream().

int inet::physicallayer::ConvolutionalCode::codeRatePuncturingN

protected

Referenced by computeNetBitErrorRate(), getCodeRate(), getDecodedLength(), getEncodedLength(), inet::physicallayer::Ieee80211ConvolutionalCode::Ieee80211ConvolutionalCode(), and printToStream().

const char* inet::physicallayer::ConvolutionalCode::constraintLengthVector

protected

int inet::physicallayer::ConvolutionalCode::memory

protected

Referenced by computeNetBitErrorRate(), and ConvolutionalCode().

const char* inet::physicallayer::ConvolutionalCode::mode

protected

const char* inet::physicallayer::ConvolutionalCode::puncturingMatrix

protected

Referenced by inet::physicallayer::Ieee80211ConvolutionalCode::Ieee80211ConvolutionalCode().

const char* inet::physicallayer::ConvolutionalCode::transferFunctionMatrix

protected

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

• ConvolutionalCode.h
• ConvolutionalCode.cc