#include <Ieee80211ErrorModelBase.h>

Inheritance diagram for inet::physicallayer::Ieee80211ErrorModelBase:

Public Member Functions
	Ieee80211ErrorModelBase ()

virtual double	computePacketErrorRate (const ISnir *snir, IRadioSignal::SignalPart part) const override
	Returns the packet error rate based on SNIR, modulation, FEC encoding and any other physical layer characteristics. More...

virtual double	computeBitErrorRate (const ISnir *snir, IRadioSignal::SignalPart part) const override
	Returns the bit error rate based on SNIR, modulation, FEC encoding and any other physical layer characteristics. More...

virtual double	computeSymbolErrorRate (const ISnir *snir, IRadioSignal::SignalPart part) const override
	Returns the symbol error rate based on SNIR, modulation, and any other physical layer characteristics. More...

Public Member Functions inherited from inet::IPrintableObject
virtual	~IPrintableObject ()

virtual std::ostream &	printToStream (std::ostream &stream, int level, int evFlags=0) const
	Prints this object to the provided output stream. More...

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

Protected Member Functions
virtual double	getHeaderSuccessRate (const IIeee80211Mode *mode, unsigned int bitLength, double snir) const =0

virtual double	getDataSuccessRate (const IIeee80211Mode *mode, unsigned int bitLength, double snir) const =0

virtual Packet *	computeCorruptedPacket (const Packet *packet, double ber) const override

virtual double	getDsssDbpskSuccessRate (unsigned int bitLength, double snir) const

virtual double	getDsssDqpskSuccessRate (unsigned int bitLength, double snir) const

virtual double	getDsssDqpskCck5_5SuccessRate (unsigned int bitLength, double snir) const

virtual double	getDsssDqpskCck11SuccessRate (unsigned int bitLength, double snir) const

Protected Member Functions inherited from inet::physicallayer::ErrorModelBase
virtual void	initialize (int stage) override

virtual double	getScalarSnir (const ISnir *snir) const

virtual bool	hasProbabilisticError (b length, double ber) const

virtual Packet *	corruptBits (const Packet *packet, double ber, bool &isCorrupted) const

virtual Packet *	corruptBytes (const Packet *packet, double ber, bool &isCorrupted) const

virtual Packet *	corruptChunks (const Packet *packet, double ber, bool &isCorrupted) const

virtual Packet *	corruptPacket (const Packet *packet, bool &isCorrupted) const

virtual Packet *	computeCorruptedPacket (const ISnir *snir) const override

Protected Attributes
double	spectralEfficiency1bit = 2000000.0 / 1000000.0

double	spectralEfficiency2bit = 2000000.0 / 1000000.0 / 2.0

double	sirPerfect = 10.0

double	sirImpossible = 0.1

Protected Attributes inherited from inet::physicallayer::ErrorModelBase
CorruptionMode	corruptionMode = CorruptionMode::CM_UNDEFINED

SnirMode	snirMode = SnirMode::SM_UNDEFINED

double	snirOffset = NaN

Additional Inherited Members
Public Types inherited from inet::physicallayer::ErrorModelBase
enum	CorruptionMode { CorruptionMode::CM_UNDEFINED = -1, CorruptionMode::CM_PACKET, CorruptionMode::CM_CHUNK, CorruptionMode::CM_BYTE, CorruptionMode::CM_BIT }

enum	SnirMode { SnirMode::SM_UNDEFINED = -1, SnirMode::SM_MIN, SnirMode::SM_MEAN }

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) }

Constructor & Destructor Documentation

◆ Ieee80211ErrorModelBase()

inet::physicallayer::Ieee80211ErrorModelBase::Ieee80211ErrorModelBase ( )

18 {

19 }

Member Function Documentation

◆ computeBitErrorRate()

double inet::physicallayer::Ieee80211ErrorModelBase::computeBitErrorRate	(	const ISnir *	snir,
		IRadioSignal::SignalPart	part
	)		const

overridevirtual

Returns the bit error rate based on SNIR, modulation, FEC encoding and any other physical layer characteristics.

Implements inet::physicallayer::IErrorModel.

 {
     Enter_Method("computeBitErrorRate");
     return NaN;
 }

◆ computeCorruptedPacket()

Packet * inet::physicallayer::Ieee80211ErrorModelBase::computeCorruptedPacket	(	const Packet *	packet,
		double	ber
	)		const

overrideprotectedvirtual

Reimplemented from inet::physicallayer::ErrorModelBase.

 {
     if (corruptionMode == CorruptionMode::CM_PACKET)
         return ErrorModelBase::computeCorruptedPacket(packet, ber);
     else
         throw cRuntimeError("Unimplemented corruption mode");
 }

◆ computePacketErrorRate()

double inet::physicallayer::Ieee80211ErrorModelBase::computePacketErrorRate	(	const ISnir *	snir,
		IRadioSignal::SignalPart	part
	)		const

overridevirtual

Returns the packet error rate based on SNIR, modulation, FEC encoding and any other physical layer characteristics.

Implements inet::physicallayer::IErrorModel.

 {
     Enter_Method("computePacketErrorRate");
     auto transmission = snir->getReception()->getTransmission();
     auto flatTransmission = dynamic_cast<const FlatTransmissionBase *>(transmission);
     auto ieee80211Transmission = check_and_cast<const Ieee80211TransmissionBase *>(transmission);
     auto mode = ieee80211Transmission->getMode();
     auto headerLength = flatTransmission != nullptr ? flatTransmission->getHeaderLength() : mode->getHeaderMode()->getLength();
     auto dataLength = flatTransmission != nullptr ? flatTransmission->getDataLength() : mode->getDataMode()->getCompleteLength(transmission->getPacket()->getTotalLength() - headerLength);
     // TODO check header length and data length for OFDM (signal) field
     double headerSuccessRate = getHeaderSuccessRate(mode, b(headerLength).get(), getScalarSnir(snir));
     double dataSuccessRate = getDataSuccessRate(mode, b(dataLength).get(), getScalarSnir(snir));
     switch (part) {
         case IRadioSignal::SIGNAL_PART_WHOLE:
             return 1.0 - headerSuccessRate * dataSuccessRate;
         case IRadioSignal::SIGNAL_PART_PREAMBLE:
             return 0;
         case IRadioSignal::SIGNAL_PART_HEADER:
             return 1.0 - headerSuccessRate;
         case IRadioSignal::SIGNAL_PART_DATA:
             return 1.0 - dataSuccessRate;
         default:
             throw cRuntimeError("Unknown signal part: '%s'", IRadioSignal::getSignalPartName(part));
     }
 }

Referenced by inet::physicallayer::Ieee80211OfdmErrorModel::computePacketModel().

◆ computeSymbolErrorRate()

double inet::physicallayer::Ieee80211ErrorModelBase::computeSymbolErrorRate	(	const ISnir *	snir,
		IRadioSignal::SignalPart	part
	)		const

overridevirtual

Returns the symbol error rate based on SNIR, modulation, and any other physical layer characteristics.

Implements inet::physicallayer::IErrorModel.

 {
     Enter_Method("computeSymbolErrorRate");
     return NaN;
 }

◆ getDataSuccessRate()

virtual double inet::physicallayer::Ieee80211ErrorModelBase::getDataSuccessRate	(	const IIeee80211Mode *	mode,
		unsigned int	bitLength,
		double	snir
	)		const

protectedpure virtual

Implemented in inet::physicallayer::Ieee80211YansErrorModel, and inet::physicallayer::Ieee80211NistErrorModel.

Referenced by computePacketErrorRate().

◆ getDsssDbpskSuccessRate()

double inet::physicallayer::Ieee80211ErrorModelBase::getDsssDbpskSuccessRate	(	unsigned int	bitLength,
		double	snir
	)		const

protectedvirtual

 {
     double EbN0 = snir * spectralEfficiency1bit; // 1 bit per symbol with 1 MSPS
     double bitErrorRate = 0.5 * exp(-EbN0);
     return pow((1.0 - bitErrorRate), (int)bitLength);
 }

Referenced by inet::physicallayer::Ieee80211NistErrorModel::getDSSSAndHrDSSSChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getDSSSAndHrDSSSChunkSuccessRate().

◆ getDsssDqpskCck11SuccessRate()

double inet::physicallayer::Ieee80211ErrorModelBase::getDsssDqpskCck11SuccessRate	(	unsigned int	bitLength,
		double	snir
	)		const

protectedvirtual

 {
     double bitErrorRate;
     if (snir > sirPerfect)
         bitErrorRate = 0.0;
     else if (snir < sirImpossible)
         bitErrorRate = 0.5;
     else {
         double a1 = 7.9056742265333456e-003;
         double a2 = -1.8397449399176360e-001;
         double a3 = 1.0740689468707241e+000;
         double a4 = 1.0523316904502553e+000;
         double a5 = 3.0552298746496687e-001;
         double a6 = 2.2032715128698435e+000;
         bitErrorRate = (a1 * snir * snir + a2 * snir + a3) / (snir * snir * snir + a4 * snir * snir + a5 * snir + a6);
     }
     return pow((1.0 - bitErrorRate), (int)bitLength);
 }

Referenced by inet::physicallayer::Ieee80211NistErrorModel::getDSSSAndHrDSSSChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getDSSSAndHrDSSSChunkSuccessRate().

◆ getDsssDqpskCck5_5SuccessRate()

double inet::physicallayer::Ieee80211ErrorModelBase::getDsssDqpskCck5_5SuccessRate	(	unsigned int	bitLength,
		double	snir
	)		const

protectedvirtual

 {
     double bitErrorRate;
     if (snir > sirPerfect)
         bitErrorRate = 0.0;
     else if (snir < sirImpossible)
         bitErrorRate = 0.5;
     else {
         double a1 = 5.3681634344056195e-001;
         double a2 = 3.3092430025608586e-003;
         double a3 = 4.1654372361004000e-001;
         double a4 = 1.0288981434358866e+000;
         bitErrorRate = a1 * exp(-(pow((snir - a2) / a3, a4)));
     }
     return pow((1.0 - bitErrorRate), (int)bitLength);
 }

Referenced by inet::physicallayer::Ieee80211NistErrorModel::getDSSSAndHrDSSSChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getDSSSAndHrDSSSChunkSuccessRate().

◆ getDsssDqpskSuccessRate()

double inet::physicallayer::Ieee80211ErrorModelBase::getDsssDqpskSuccessRate	(	unsigned int	bitLength,
		double	snir
	)		const

protectedvirtual

 {
     double EbN0 = snir * spectralEfficiency2bit; // 2 bits per symbol, 1 MSPS
     double bitErrorRate = ((sqrt(2.0) + 1.0) / sqrt(8.0 * 3.1415926 * sqrt(2.0))) * (1.0 / sqrt(EbN0)) * exp(-(2.0 - sqrt(2.0)) * EbN0);
     return pow((1.0 - bitErrorRate), (int)bitLength);
 }

Referenced by inet::physicallayer::Ieee80211NistErrorModel::getDSSSAndHrDSSSChunkSuccessRate(), and inet::physicallayer::Ieee80211YansErrorModel::getDSSSAndHrDSSSChunkSuccessRate().

◆ getHeaderSuccessRate()

virtual double inet::physicallayer::Ieee80211ErrorModelBase::getHeaderSuccessRate	(	const IIeee80211Mode *	mode,
		unsigned int	bitLength,
		double	snir
	)		const

protectedpure virtual

Implemented in inet::physicallayer::Ieee80211NistErrorModel, and inet::physicallayer::Ieee80211YansErrorModel.

Referenced by computePacketErrorRate().

Member Data Documentation

◆ sirImpossible

double inet::physicallayer::Ieee80211ErrorModelBase::sirImpossible = 0.1

protected

Referenced by getDsssDqpskCck11SuccessRate(), and getDsssDqpskCck5_5SuccessRate().

◆ sirPerfect

double inet::physicallayer::Ieee80211ErrorModelBase::sirPerfect = 10.0

protected

Referenced by getDsssDqpskCck11SuccessRate(), and getDsssDqpskCck5_5SuccessRate().

◆ spectralEfficiency1bit

double inet::physicallayer::Ieee80211ErrorModelBase::spectralEfficiency1bit = 2000000.0 / 1000000.0

protected

Referenced by getDsssDbpskSuccessRate().

◆ spectralEfficiency2bit

double inet::physicallayer::Ieee80211ErrorModelBase::spectralEfficiency2bit = 2000000.0 / 1000000.0 / 2.0

protected

Referenced by getDsssDqpskSuccessRate().

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

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ Ieee80211ErrorModelBase()

Member Function Documentation

◆ computeBitErrorRate()

◆ computeCorruptedPacket()

◆ computePacketErrorRate()

◆ computeSymbolErrorRate()

◆ getDataSuccessRate()

◆ getDsssDbpskSuccessRate()

◆ getDsssDqpskCck11SuccessRate()

◆ getDsssDqpskCck5_5SuccessRate()

◆ getDsssDqpskSuccessRate()

◆ getHeaderSuccessRate()

Member Data Documentation

◆ sirImpossible

◆ sirPerfect

◆ spectralEfficiency1bit

◆ spectralEfficiency2bit