A Discrete-Event Network Simulator
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spectrum-converter.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) 2009 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: Nicola Baldo <nbaldo@cttc.es>
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*/
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#include <ns3/spectrum-converter.h>
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#include <ns3/assert.h>
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#include <ns3/log.h>
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#include <algorithm>
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NS_LOG_COMPONENT_DEFINE
(
"SpectrumConverter"
);
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namespace
ns3 {
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SpectrumConverter::SpectrumConverter
()
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{
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}
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SpectrumConverter::SpectrumConverter
(
Ptr<const SpectrumModel>
fromSpectrumModel,
Ptr<const SpectrumModel>
toSpectrumModel)
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{
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NS_LOG_FUNCTION
(
this
);
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m_fromSpectrumModel
= fromSpectrumModel;
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m_toSpectrumModel
= toSpectrumModel;
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for
(Bands::const_iterator toit = toSpectrumModel->Begin (); toit != toSpectrumModel->End (); ++toit)
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{
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std::vector<double> coeffs;
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for
(Bands::const_iterator fromit = fromSpectrumModel->Begin (); fromit != fromSpectrumModel->End (); ++fromit)
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{
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double
c =
GetCoefficient
(*fromit, *toit);
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NS_LOG_LOGIC
(
"("
<< fromit->fl <<
","
<< fromit->fh <<
")"
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<<
" --> "
<<
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"("
<< toit->fl <<
","
<< toit->fh <<
")"
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<<
" = "
<< c);
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coeffs.push_back (c);
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}
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m_conversionMatrix
.push_back (coeffs);
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}
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}
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double
SpectrumConverter::GetCoefficient
(
const
BandInfo
& from,
const
BandInfo
& to)
const
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{
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NS_LOG_FUNCTION
(
this
);
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double
coeff = std::min (from.
fh
, to.
fh
) - std::max (from.
fl
, to.
fl
);
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coeff = std::max (0.0, coeff);
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coeff = std::min (1.0, coeff / (to.
fh
- to.
fl
));
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return
coeff;
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}
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Ptr<SpectrumValue>
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SpectrumConverter::Convert
(
Ptr<const SpectrumValue>
fvvf)
const
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{
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NS_ASSERT
( *(fvvf->GetSpectrumModel ()) == *
m_fromSpectrumModel
);
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Ptr<SpectrumValue>
tvvf = Create<SpectrumValue> (
m_toSpectrumModel
);
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Values::iterator tvit = tvvf->ValuesBegin ();
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for
(std::vector<std::vector<double> >::const_iterator toit =
m_conversionMatrix
.begin ();
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toit !=
m_conversionMatrix
.end ();
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++toit)
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{
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NS_ASSERT
(tvit != tvvf->ValuesEnd ());
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Values::const_iterator fvit = fvvf->ConstValuesBegin ();
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double
sum = 0;
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for
(std::vector<double>::const_iterator fromit = toit->begin ();
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fromit != toit->end ();
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++fromit)
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{
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NS_ASSERT
(fvit != fvvf->ConstValuesEnd ());
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sum += (*fvit) * (*fromit);
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++fvit;
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}
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*tvit = sum;
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++tvit;
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}
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return
tvvf;
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}
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}
// namespace ns3
ns3::SpectrumConverter::m_toSpectrumModel
Ptr< const SpectrumModel > m_toSpectrumModel
Definition:
spectrum-converter.h:83
ns3::SpectrumConverter::GetCoefficient
double GetCoefficient(const BandInfo &from, const BandInfo &to) const
Calculate the coefficient for value conversion between elements.
Definition:
spectrum-converter.cc:62
ns3::Ptr
smart pointer class similar to boost::intrusive_ptr
Definition:
ptr.h:59
NS_LOG_FUNCTION
#define NS_LOG_FUNCTION(parameters)
Definition:
log.h:345
NS_ASSERT
#define NS_ASSERT(condition)
Definition:
assert.h:64
ns3::SpectrumConverter::m_conversionMatrix
std::vector< std::vector< double > > m_conversionMatrix
Definition:
spectrum-converter.h:81
NS_LOG_LOGIC
#define NS_LOG_LOGIC(msg)
Definition:
log.h:368
ns3::BandInfo::fl
double fl
lower limit of subband
Definition:
spectrum-model.h:47
ns3::SpectrumConverter::SpectrumConverter
SpectrumConverter()
Definition:
spectrum-converter.cc:32
ns3::SpectrumConverter::Convert
Ptr< SpectrumValue > Convert(Ptr< const SpectrumValue > vvf) const
Convert a particular ValueVsFreq instance to.
Definition:
spectrum-converter.cc:74
ns3::SpectrumConverter::m_fromSpectrumModel
Ptr< const SpectrumModel > m_fromSpectrumModel
Definition:
spectrum-converter.h:82
NS_LOG_COMPONENT_DEFINE
NS_LOG_COMPONENT_DEFINE("SpectrumConverter")
ns3::BandInfo::fh
double fh
upper limit of subband
Definition:
spectrum-model.h:49
ns3::BandInfo
The building block of a SpectrumModel.
Definition:
spectrum-model.h:45
src
spectrum
model
spectrum-converter.cc
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