/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * 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>

 */

#include "wifi-tx-current-model.h"

#include "ns3/log.h"

#include "ns3/boolean.h"

#include "ns3/double.h"

#include "ns3/string.h"

#include "ns3/pointer.h"

#include <cmath>

NS_LOG_COMPONENT_DEFINE ("WifiTxCurrentModel");

namespace ns3 {

// ------------------------------------------------------------------------- //

NS_OBJECT_ENSURE_REGISTERED (WifiTxCurrentModel);

TypeId 

WifiTxCurrentModel::GetTypeId (void)

{

  static TypeId tid = TypeId ("ns3::WifiTxCurrentModel")

    .SetParent<Object> ()

  ;

  return tid;

}

WifiTxCurrentModel::WifiTxCurrentModel()

{

}

WifiTxCurrentModel::~WifiTxCurrentModel()

{

}

double

WifiTxCurrentModel::DbmToW (double dbm)

{

  double mW = std::pow (10.0, dbm / 10.0);

  return mW / 1000.0;

}

// ------------------------------------------------------------------------- //

NS_OBJECT_ENSURE_REGISTERED (LinearWifiTxCurrentModel);

TypeId 

LinearWifiTxCurrentModel::GetTypeId (void)

{

  static TypeId tid = TypeId ("ns3::LinearWifiTxCurrentModel")

    .SetParent<WifiTxCurrentModel> ()

    .AddConstructor<LinearWifiTxCurrentModel> ()

    .AddAttribute ("Eta", "The efficiency of the power amplifier.",

                   DoubleValue (0.10),

                   MakeDoubleAccessor (&LinearWifiTxCurrentModel::SetEta,

                                       &LinearWifiTxCurrentModel::GetEta),

                   MakeDoubleChecker<double> ())

    .AddAttribute ("Voltage", "The supply voltage (in Volts).",

                   DoubleValue (3.0),

                   MakeDoubleAccessor (&LinearWifiTxCurrentModel::SetVoltage,

                                       &LinearWifiTxCurrentModel::GetVoltage),

                   MakeDoubleChecker<double> ())

    .AddAttribute ("IdleCurrent", "The current in the IDLE state (in Watts).",

                   DoubleValue (0.273333),

                   MakeDoubleAccessor (&LinearWifiTxCurrentModel::SetIdleCurrent,

                                       &LinearWifiTxCurrentModel::GetIdleCurrent),

                   MakeDoubleChecker<double> ())

  ;

  return tid;

}

LinearWifiTxCurrentModel::LinearWifiTxCurrentModel ()

{

}

LinearWifiTxCurrentModel::~LinearWifiTxCurrentModel()

{

}

void

LinearWifiTxCurrentModel::SetEta (double eta)

{

  m_eta = eta;

}

void

LinearWifiTxCurrentModel::SetVoltage (double voltage)

{

  m_voltage = voltage;

}

void

LinearWifiTxCurrentModel::SetIdleCurrent (double idleCurrent)

{

  m_idleCurrent = idleCurrent;

}

double

LinearWifiTxCurrentModel::GetEta (void) const

{

  return m_eta;

}

double

LinearWifiTxCurrentModel::GetVoltage (void) const

{

  return m_voltage;

}

double

LinearWifiTxCurrentModel::GetIdleCurrent (void) const

{

  return m_idleCurrent;

}

double

LinearWifiTxCurrentModel::CalcTxCurrent (double txPowerDbm) const

{

  return DbmToW (txPowerDbm) / (m_voltage * m_eta) + m_idleCurrent;

}

// ------------------------------------------------------------------------- //

} // namespace ns3