#include <Ieee80211HTMode.h>

Inheritance diagram for inet::physicallayer::Ieee80211HTDataMode:

Public Member Functions
	Ieee80211HTDataMode (const Ieee80211HTMCS *modulationAndCodingScheme, const Hz bandwidth, GuardIntervalType guardIntervalType)

int	getServiceBitLength () const

int	getTailBitLength () const

virtual int	getNumberOfSpatialStreams () const override

virtual int	getBitLength (int dataBitLength) const override

virtual const simtime_t	getDuration (int dataBitLength) const override

virtual bps	getNetBitrate () const override

virtual bps	getGrossBitrate () const override

virtual const Ieee80211HTMCS *	getModulationAndCodingScheme () const

virtual const Ieee80211HTCode *	getCode () const

virtual const Ieee80211OFDMModulation *	getModulation () const override

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

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

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

Public Member Functions inherited from inet::physicallayer::Ieee80211HTModeBase
	Ieee80211HTModeBase (unsigned int modulationAndCodingScheme, unsigned int numberOfSpatialStreams, const Hz bandwidth, GuardIntervalType guardIntervalType)

virtual int	getNumberOfDataSubcarriers () const

virtual int	getNumberOfPilotSubcarriers () const

virtual int	getNumberOfTotalSubcarriers () const

virtual GuardIntervalType	getGuardIntervalType () const

virtual unsigned int	getMcsIndex () const

virtual Hz	getBandwidth () const

Public Member Functions inherited from inet::physicallayer::Ieee80211HTTimingRelatedParametersBase
const simtime_t	getDFTPeriod () const

const simtime_t	getGIDuration () const

const simtime_t	getShortGIDuration () const

const simtime_t	getSymbolInterval () const

const simtime_t	getShortGISymbolInterval () const

Protected Member Functions
bps	computeGrossBitrate () const override

bps	computeNetBitrate () const override

unsigned int	computeNumberOfSpatialStreams (const Ieee80211OFDMModulation stream1Modulation, const Ieee80211OFDMModulation stream2Modulation, const Ieee80211OFDMModulation stream3Modulation, const Ieee80211OFDMModulation stream4Modulation) const

unsigned int	computeNumberOfCodedBitsPerSubcarrierSum () const

unsigned int	computeNumberOfBccEncoders () const

Protected Attributes
const Ieee80211HTMCS *	modulationAndCodingScheme

const unsigned int	numberOfBccEncoders

Protected Attributes inherited from inet::physicallayer::Ieee80211HTModeBase
const Hz	bandwidth

const GuardIntervalType	guardIntervalType

const unsigned int	mcsIndex

const unsigned int	numberOfSpatialStreams

bps	netBitrate

bps	grossBitrate

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 }

Public Types inherited from inet::physicallayer::Ieee80211HTModeBase
enum	GuardIntervalType { HT_GUARD_INTERVAL_SHORT, HT_GUARD_INTERVAL_LONG }

Constructor & Destructor Documentation

inet::physicallayer::Ieee80211HTDataMode::Ieee80211HTDataMode	(	const Ieee80211HTMCS *	modulationAndCodingScheme,
		const Hz	bandwidth,
		GuardIntervalType	guardIntervalType
	)

                                                                                                                                                  :
         Ieee80211HTModeBase(modulationAndCodingScheme->getMcsIndex(), computeNumberOfSpatialStreams(modulationAndCodingScheme->getModulation(), modulationAndCodingScheme->getStreamExtension1Modulation(), modulationAndCodingScheme->getStreamExtension2Modulation(), modulationAndCodingScheme->getStreamExtension3Modulation()), bandwidth, guardIntervalType),
         modulationAndCodingScheme(modulationAndCodingScheme),
         numberOfBccEncoders(computeNumberOfBccEncoders())
 {
 }

Member Function Documentation

bps inet::physicallayer::Ieee80211HTDataMode::computeGrossBitrate ( ) const

overrideprotectedvirtual

Implements inet::physicallayer::Ieee80211HTModeBase.

 {
     unsigned int numberOfCodedBitsPerSubcarrierSum = computeNumberOfCodedBitsPerSubcarrierSum();
     unsigned int numberOfCodedBitsPerSymbol = numberOfCodedBitsPerSubcarrierSum * getNumberOfDataSubcarriers();
     if (guardIntervalType == HT_GUARD_INTERVAL_LONG)
         return bps(numberOfCodedBitsPerSymbol / getSymbolInterval());
     else if (guardIntervalType == HT_GUARD_INTERVAL_SHORT)
         return bps(numberOfCodedBitsPerSymbol / getShortGISymbolInterval());
     else
         throw cRuntimeError("Unknown guard interval type");
 }

bps inet::physicallayer::Ieee80211HTDataMode::computeNetBitrate ( ) const

overrideprotectedvirtual

Implements inet::physicallayer::Ieee80211HTModeBase.

 {
     return getGrossBitrate() * getCode()->getForwardErrorCorrection()->getCodeRate();
 }

unsigned int inet::physicallayer::Ieee80211HTDataMode::computeNumberOfBccEncoders ( ) const

protected

 {
     // When the BCC FEC encoder is used, a single encoder is used, except that two encoders
     // are used when the selected MCS has a PHY rate greater than 300 Mb/s (see 20.6).
     return getGrossBitrate() > Mbps(300) ? 2 : 1;
 }

unsigned int inet::physicallayer::Ieee80211HTDataMode::computeNumberOfCodedBitsPerSubcarrierSum ( ) const

protected

 {
     return
         (modulationAndCodingScheme->getModulation() ? modulationAndCodingScheme->getModulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
         (modulationAndCodingScheme->getStreamExtension1Modulation() ? modulationAndCodingScheme->getStreamExtension1Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
         (modulationAndCodingScheme->getStreamExtension2Modulation()? modulationAndCodingScheme->getStreamExtension2Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
         (modulationAndCodingScheme->getStreamExtension3Modulation() ? modulationAndCodingScheme->getStreamExtension3Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0);
 }

unsigned int inet::physicallayer::Ieee80211HTDataMode::computeNumberOfSpatialStreams	(	const Ieee80211OFDMModulation *	stream1Modulation,
		const Ieee80211OFDMModulation *	stream2Modulation,
		const Ieee80211OFDMModulation *	stream3Modulation,
		const Ieee80211OFDMModulation *	stream4Modulation
	)		const

protected

 {
     return (stream1Modulation ? 1 : 0) + (stream2Modulation ? 1 : 0) +
            (stream3Modulation ? 1 : 0) + (stream4Modulation ? 1 : 0);
 }

int inet::physicallayer::Ieee80211HTDataMode::getBitLength ( int dataBitLength ) const

overridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

 {
     return getServiceBitLength() + getTailBitLength() + dataBitLength; // TODO: padding?
 }

virtual const Ieee80211HTCode* inet::physicallayer::Ieee80211HTDataMode::getCode ( ) const

inlinevirtual

222 { return modulationAndCodingScheme->getCode(); }

inet::physicallayer::Ieee80211HTDataMode::modulationAndCodingScheme

const Ieee80211HTMCS * modulationAndCodingScheme

Definition: Ieee80211HTMode.h:200

inet::physicallayer::Ieee80211HTMCS::getCode

const Ieee80211HTCode * getCode() const

Definition: Ieee80211HTMode.h:188

const simtime_t inet::physicallayer::Ieee80211HTDataMode::getDuration ( int dataBitLength ) const

overridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

Referenced by inet::physicallayer::Ieee80211HTMode::getDuration().

 {
     unsigned int numberOfCodedBitsPerSubcarrierSum = computeNumberOfCodedBitsPerSubcarrierSum();
     unsigned int numberOfCodedBitsPerSymbol = numberOfCodedBitsPerSubcarrierSum * getNumberOfDataSubcarriers();
     const IForwardErrorCorrection *forwardErrorCorrection = getCode() ? getCode()->getForwardErrorCorrection() : nullptr;
     unsigned int dataBitsPerSymbol = forwardErrorCorrection ? forwardErrorCorrection->getDecodedLength(numberOfCodedBitsPerSymbol) : numberOfCodedBitsPerSymbol;
     int numberOfSymbols = lrint(ceil((double)getBitLength(dataBitLength) / dataBitsPerSymbol)); // TODO: getBitLength(dataBitLength) should be divisible by dataBitsPerSymbol
     return numberOfSymbols * getSymbolInterval();
 }