A Discrete-Event Network Simulator
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itu-r-1411-los-propagation-loss-model.cc
Go to the documentation of this file.
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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2011, 2012 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Marco Miozzo <marco.miozzo@cttc.es>,
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* Nicola Baldo <nbaldo@cttc.es>
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*
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*/
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#include "ns3/log.h"
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#include "ns3/double.h"
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#include "ns3/enum.h"
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#include "ns3/mobility-model.h"
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#include <cmath>
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#include "
itu-r-1411-los-propagation-loss-model.h
"
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NS_LOG_COMPONENT_DEFINE
(
"ItuR1411LosPropagationLossModel"
);
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namespace
ns3 {
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NS_OBJECT_ENSURE_REGISTERED
(ItuR1411LosPropagationLossModel);
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TypeId
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ItuR1411LosPropagationLossModel::GetTypeId
(
void
)
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{
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static
TypeId
tid =
TypeId
(
"ns3::ItuR1411LosPropagationLossModel"
)
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.
SetParent
<
PropagationLossModel
> ()
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.AddAttribute (
"Frequency"
,
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"The propagation frequency in Hz"
,
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DoubleValue
(2160e6),
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MakeDoubleAccessor (&
ItuR1411LosPropagationLossModel::SetFrequency
),
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MakeDoubleChecker<double> ());
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return
tid;
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}
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double
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ItuR1411LosPropagationLossModel::GetLoss
(
Ptr<MobilityModel>
a,
Ptr<MobilityModel>
b)
const
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{
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NS_LOG_FUNCTION
(
this
);
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double
dist = a->
GetDistanceFrom
(b);
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double
lossLow = 0.0;
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double
lossUp = 0.0;
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NS_ASSERT_MSG
(a->
GetPosition
().
z
> 0 && b->
GetPosition
().
z
> 0,
"nodes' height must be greater than 0"
);
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double
Lbp = std::fabs (20 * std::log10 ((
m_lambda
*
m_lambda
) / (8 * M_PI * a->
GetPosition
().
z
* b->
GetPosition
().
z
)));
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double
Rbp = (4 * a->
GetPosition
().
z
* b->
GetPosition
().
z
) / m_lambda;
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NS_LOG_LOGIC
(
this
<<
" Lbp "
<< Lbp <<
" Rbp "
<< Rbp <<
" lambda "
<< m_lambda);
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if
(dist <= Rbp)
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{
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lossLow = Lbp + 20 * std::log10 (dist / Rbp);
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lossUp = Lbp + 20 + 25 * std::log10 (dist / Rbp);
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}
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else
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{
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lossLow = Lbp + 40 * std::log10 (dist / Rbp);
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lossUp = Lbp + 20 + 40 * std::log10 (dist / Rbp);
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}
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double
loss = (lossUp + lossLow) / 2;
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return
loss;
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}
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void
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ItuR1411LosPropagationLossModel::SetFrequency
(
double
freq)
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{
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NS_ASSERT
(freq > 0.0);
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m_lambda
= 299792458.0 / freq;
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}
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double
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ItuR1411LosPropagationLossModel::DoCalcRxPower
(
double
txPowerDbm,
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Ptr<MobilityModel>
a,
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Ptr<MobilityModel>
b)
const
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{
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return
(txPowerDbm -
GetLoss
(a, b));
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}
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int64_t
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ItuR1411LosPropagationLossModel::DoAssignStreams
(int64_t stream)
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{
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return
0;
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}
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}
// namespace ns3
ns3::Ptr< MobilityModel >
NS_LOG_FUNCTION
#define NS_LOG_FUNCTION(parameters)
Definition:
log.h:311
ns3::MobilityModel::GetDistanceFrom
double GetDistanceFrom(Ptr< const MobilityModel > position) const
Definition:
mobility-model.cc:79
NS_ASSERT
#define NS_ASSERT(condition)
Definition:
assert.h:64
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Definition:
log.h:122
ns3::MobilityModel::GetPosition
Vector GetPosition(void) const
Definition:
mobility-model.cc:62
ns3::ItuR1411LosPropagationLossModel::GetLoss
double GetLoss(Ptr< MobilityModel > a, Ptr< MobilityModel > b) const
Definition:
itu-r-1411-los-propagation-loss-model.cc:53
ns3::NS_OBJECT_ENSURE_REGISTERED
NS_OBJECT_ENSURE_REGISTERED(AntennaModel)
ns3::ItuR1411LosPropagationLossModel::SetFrequency
void SetFrequency(double freq)
Definition:
itu-r-1411-los-propagation-loss-model.cc:81
ns3::ItuR1411LosPropagationLossModel::m_lambda
double m_lambda
Definition:
itu-r-1411-los-propagation-loss-model.h:76
ns3::ItuR1411LosPropagationLossModel::DoCalcRxPower
virtual double DoCalcRxPower(double txPowerDbm, Ptr< MobilityModel > a, Ptr< MobilityModel > b) const
Definition:
itu-r-1411-los-propagation-loss-model.cc:89
NS_LOG_LOGIC
#define NS_LOG_LOGIC(msg)
Definition:
log.h:334
ns3::ItuR1411LosPropagationLossModel::GetTypeId
static TypeId GetTypeId(void)
Definition:
itu-r-1411-los-propagation-loss-model.cc:37
NS_ASSERT_MSG
#define NS_ASSERT_MSG(condition, message)
Definition:
assert.h:86
itu-r-1411-los-propagation-loss-model.h
ns3::PropagationLossModel
Modelize the propagation loss through a transmission medium.
Definition:
propagation-loss-model.h:49
ns3::ItuR1411LosPropagationLossModel::DoAssignStreams
virtual int64_t DoAssignStreams(int64_t stream)
Definition:
itu-r-1411-los-propagation-loss-model.cc:97
ns3::DoubleValue
Hold an floating point type.
Definition:
double.h:41
ns3::TypeId
a unique identifier for an interface.
Definition:
type-id.h:49
ns3::TypeId::SetParent
TypeId SetParent(TypeId tid)
Definition:
type-id.cc:610
ns3::Vector3D::z
double z
Definition:
vector.h:57
src
propagation
model
itu-r-1411-los-propagation-loss-model.cc
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