a linear model of the Wifi transmit current More...

#include <wifi-tx-current-model.h>

Inheritance diagram for ns3::LinearWifiTxCurrentModel:

Collaboration diagram for ns3::LinearWifiTxCurrentModel:

Public Member Functions
	LinearWifiTxCurrentModel ()

virtual	~LinearWifiTxCurrentModel ()

double	CalcTxCurrent (double txPowerDbm) const

double	GetEta (void) const

double	GetIdleCurrent (void) const

double	GetVoltage (void) const

void	SetEta (double eta)

void	SetIdleCurrent (double idleCurrent)

void	SetVoltage (double voltage)

Public Member Functions inherited from ns3::WifiTxCurrentModel
	WifiTxCurrentModel ()

virtual	~WifiTxCurrentModel ()

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)
	Run the DoDispose methods of this object and all the objects aggregated to it. More...

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)
	This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::WifiTxCurrentModel
static double	DbmToW (double dbm)
	Convert from dBm to Watts. More...

static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Private Attributes
double	m_eta

double	m_idleCurrent

double	m_voltage

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	DoDispose (void)
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

virtual void	NotifyNewAggregate (void)
	This method is invoked whenever two sets of objects are aggregated together. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)
	This method is invoked once all member attributes have been initialized. More...

Detailed Description

a linear model of the Wifi transmit current

Doxygen introspection did not find any typical Config paths.

This model assumes that the transmit current is a linear function of the nominal transmit power used to send the frame. In particular, the power absorbed during the transmission of a frame $W_{tx}$ is given by the power absorbed by the power amplifier $W_{pa}$ plus the power absorbed by the RF subsystem. The latter is assumed to be the same as the power absorbed in the IDLE state $W_{idle}$ .

The efficiency $\eta$ of the power amplifier is given by $\eta = \frac{P_{tx}}{W_{pa}}$ , where $P_{tx}$ is the output power, i.e., the nominal transmit power. Hence, $W_{pa} = \frac{P_{tx}}{\eta}$

It turns out that $W_{tx} = \frac{P_{tx}}{\eta} + W_{idle}$ . By dividing both sides by the supply voltage $ V $ : $I_{tx} = \frac{P_{tx}}{V \cdot \eta} + I_{idle}$ , where $I_{tx}$ and $I_{idle}$ are, respectively, the transmit current and the idle current.

For more information, refer to: Francesco Ivan Di Piazza, Stefano Mangione, and Ilenia Tinnirello. "On the Effects of Transmit Power Control on the Energy Consumption of WiFi Network Cards", Proceedings of ICST QShine 2009, pp. 463–475

If the tx current corresponding to a given nominal transmit power is known, the efficiency of the power amplifier is given by the above formula: $\eta = \frac{P_{tx}}{(I_{tx}-I_{idle})\cdot V}$

Attributes

Eta: The efficiency of the power amplifier.
- Set with class: ns3::DoubleValue
- Underlying type: double -1.79769e+308:1.79769e+308
- Initial value: 0.1
- Flags: construct write read
Voltage: The supply voltage (in Volts).
- Set with class: ns3::DoubleValue
- Underlying type: double -1.79769e+308:1.79769e+308
- Initial value: 3
- Flags: construct write read
IdleCurrent: The current in the IDLE state (in Watts).
- Set with class: ns3::DoubleValue
- Underlying type: double -1.79769e+308:1.79769e+308
- Initial value: 0.273333
- Flags: construct write read