/usr/include/ns3.27/ns3/wifi-tx-current-model.h is in libns3-dev 3.27+dfsg-1.
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/*
* Copyright (c) 2014 Universita' degli Studi di Napoli "Federico II"
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Stefano Avallone <stefano.avallone@unina.it>
*/
#ifndef WIFI_TX_CURRENT_MODEL_H
#define WIFI_TX_CURRENT_MODEL_H
#include "ns3/object.h"
namespace ns3 {
/**
* \ingroup energy
*
* \brief Modelize the transmit current as a function of the transmit power and mode
*
*/
class WifiTxCurrentModel : public Object
{
public:
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
WifiTxCurrentModel ();
virtual ~WifiTxCurrentModel ();
/**
* \param txPowerDbm the nominal tx power in dBm
* \returns the transmit current (in Ampere)
*/
virtual double CalcTxCurrent (double txPowerDbm) const = 0;
};
/**
* \ingroup energy
*
* \brief a linear model of the Wifi transmit current
*
* 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 \f$ W_{tx} \f$
* is given by the power absorbed by the power amplifier \f$ W_{pa} \f$ plus the power
* absorbed by the RF subsystem. The latter is assumed to be the same as the power
* absorbed in the IDLE state \f$ W_{idle} \f$.
*
* The efficiency \f$ \eta \f$ of the power amplifier is given by
* \f$ \eta = \frac{P_{tx}}{W_{pa}} \f$, where \f$ P_{tx} \f$ is the output power, i.e.,
* the nominal transmit power. Hence, \f$ W_{pa} = \frac{P_{tx}}{\eta} \f$
*
* It turns out that \f$ W_{tx} = \frac{P_{tx}}{\eta} + W_{idle} \f$. By dividing both
* sides by the supply voltage \f$ V \f$: \f$ I_{tx} = \frac{P_{tx}}{V \cdot \eta} + I_{idle} \f$,
* where \f$ I_{tx} \f$ and \f$ I_{idle} \f$ 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:
* \f$ \eta = \frac{P_{tx}}{(I_{tx}-I_{idle})\cdot V} \f$
*
*/
class LinearWifiTxCurrentModel : public WifiTxCurrentModel
{
public:
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
LinearWifiTxCurrentModel ();
virtual ~LinearWifiTxCurrentModel ();
/**
* \param eta (dimension-less)
*
* Set the power amplifier efficiency.
*/
void SetEta (double eta);
/**
* \param voltage (Volts)
*
* Set the supply voltage.
*/
void SetVoltage (double voltage);
/**
* \param idleCurrent (Ampere)
*
* Set the current in the IDLE state.
*/
void SetIdleCurrent (double idleCurrent);
/**
* \return the power amplifier efficiency.
*/
double GetEta (void) const;
/**
* \return the supply voltage.
*/
double GetVoltage (void) const;
/**
* \return the current in the IDLE state.
*/
double GetIdleCurrent (void) const;
double CalcTxCurrent (double txPowerDbm) const;
private:
double m_eta; ///< ETA
double m_voltage; ///< voltage
double m_idleCurrent; ///< idle current
};
} // namespace ns3
#endif /* WIFI_TX_CURRENT_MODEL_H */
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