#include <Ieee80211OFDMDemodulator.h>

Inheritance diagram for inet::physicallayer::Ieee80211OFDMDemodulator:

Public Member Functions
	Ieee80211OFDMDemodulator (const Ieee80211OFDMModulation *subcarrierModulation)

const Ieee80211OFDMModulation *	getModulation () const

virtual const IReceptionBitModel *	demodulate (const IReceptionSymbolModel *symbolModel) const override

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

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 Member Functions
BitVector	demodulateSymbol (const Ieee80211OFDMSymbol *signalSymbol) const

const IReceptionBitModel *	createBitModel (const BitVector *bitRepresentation, int signalFieldBitLength, bps signalFieldBitRate, int dataFieldBitLength, bps dataFieldBitRate) const

bool	isPilotOrDcSubcarrier (int i) const

Protected Attributes
const Ieee80211OFDMModulation *	subcarrierModulation = nullptr

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::Ieee80211OFDMDemodulator::Ieee80211OFDMDemodulator ( const Ieee80211OFDMModulation * subcarrierModulation )

                                                                                                       :
     subcarrierModulation(subcarrierModulation)
 {
 }

Member Function Documentation

const IReceptionBitModel * inet::physicallayer::Ieee80211OFDMDemodulator::createBitModel	(	const BitVector *	bitRepresentation,
		int	signalFieldBitLength,
		bps	signalFieldBitRate,
		int	dataFieldBitLength,
		bps	dataFieldBitRate
	)		const

protected

Referenced by demodulate().

 {
     return new ReceptionBitModel(signalFieldLength, signalFieldBitRate, dataFieldLength, dataFieldBitRate, bitRepresentation);
 }

const IReceptionBitModel * inet::physicallayer::Ieee80211OFDMDemodulator::demodulate ( const IReceptionSymbolModel * symbolModel ) const

overridevirtual

Implements inet::physicallayer::IDemodulator.

Referenced by inet::physicallayer::Ieee80211LayeredOFDMReceiver::createSignalFieldBitModel(), and inet::physicallayer::Ieee80211OFDMDemodulatorModule::demodulate().

 {
     const std::vector<const ISymbol *> *symbols = symbolModel->getSymbols();
     BitVector *bitRepresentation = new BitVector();
     for (auto & symbols_i : *symbols) {
         const Ieee80211OFDMSymbol *symbol = dynamic_cast<const Ieee80211OFDMSymbol *>(symbols_i);
         BitVector bits = demodulateSymbol(symbol);
         for (unsigned int j = 0; j < bits.getSize(); j++)
             bitRepresentation->appendBit(bits.getBit(j));
     }
     return createBitModel(bitRepresentation, -1, bps(NaN), -1, bps(NaN)); // TODO:
 }

BitVector inet::physicallayer::Ieee80211OFDMDemodulator::demodulateSymbol ( const Ieee80211OFDMSymbol * signalSymbol ) const

protected

Referenced by demodulate().

 {
     std::vector<const APSKSymbol *> apskSymbols = signalSymbol->getSubCarrierSymbols();
     const APSKModulationBase *demodulationScheme = subcarrierModulation->getSubcarrierModulation();
     BitVector field;
     for (unsigned int i = 0; i < apskSymbols.size(); i++) {
         if (!isPilotOrDcSubcarrier(i)) {
             const APSKSymbol *apskSymbol = apskSymbols.at(i);
             ShortBitVector bits = demodulationScheme->demapToBitRepresentation(apskSymbol);
             for (unsigned int j = 0; j < bits.getSize(); j++)
                 field.appendBit(bits.getBit(j));
         }
     }
     EV_DEBUG << "The field symbols has been demodulated into the following bit stream: " << field << endl;
     return field;
 }

const Ieee80211OFDMModulation* inet::physicallayer::Ieee80211OFDMDemodulator::getModulation ( ) const

inline

Referenced by inet::physicallayer::Ieee80211OFDMDemodulatorModule::getModulation().

47 { return subcarrierModulation; }

inet::physicallayer::Ieee80211OFDMDemodulator::subcarrierModulation

const Ieee80211OFDMModulation * subcarrierModulation

Definition: Ieee80211OFDMDemodulator.h:37

bool inet::physicallayer::Ieee80211OFDMDemodulator::isPilotOrDcSubcarrier ( int i ) const

protected

Referenced by demodulateSymbol().

 {
     return i == 5 || i == 19 || i == 33 || i == 47 || i == 26; // pilots are: 5,19,33,47, 26 (0+26) is a dc subcarrier
 }

std::ostream & inet::physicallayer::Ieee80211OFDMDemodulator::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.

Referenced by inet::physicallayer::Ieee80211OFDMDemodulatorModule::printToStream().

 {
     stream << "Ieee80211OFDMDemodulator";
     if (level <= PRINT_LEVEL_TRACE)
         stream << ", subcarrierModulation = " << printObjectToString(subcarrierModulation, level + 1);
     return stream;
 }

Member Data Documentation

const Ieee80211OFDMModulation* inet::physicallayer::Ieee80211OFDMDemodulator::subcarrierModulation = nullptr

protected

Referenced by demodulateSymbol(), and printToStream().

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

Member Function Documentation

Member Data Documentation