A Matlab-based Object-Oriented Approach to Multipath Fading Channel Simulation

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1、AMATLABR-basedObject-OrientedApproachtoMultipathFadingChannelSimulationCyril-DanielIskander*Hi-TekMultisystems7945AvenuedeCornouailles,Quebec,´QC,Canada,G1H3V9E-mail:cyriliskander@hotmail.comAbstract—AMATLABR-basedobject-orientedimplementationofawithaverticallypolarizedantenna,andamobiletermi

2、nal.Themultipathfadingsimulatorispresented.Thesimulatorusestheinterpo-electricfieldincidentonthemobileantennaconsistsofNaz-latedfilteredGaussiannoiseapproachtoemulatethetimeselectivityoftheimuthalplanewaves(alsooftencalledscatterers),with:channel(i.e.theDopplerspreading),andabandlimitedrepresen

3、tationofthechanneltoefficientlyemulatethefrequencyselectivityofthechannelArbitrarycarrierphasesn;(i.e.thetimespreading).Arbitraryazimuthalanglesofarrivalsn;Equalaverageamplitudes.I.INTRODUCTIONMathematically,thisfieldcanbeexpressedas:Multipathfadingchannelsimulatorsareessentialcompo-XNXNnen

4、tsofwirelesssystemsphysicallayersimulations.Thispa-Ez(t)=En(t)=EnCncos(2fct+n)perpresentsaMATLABR-basedapproachtomultipathfadingn=1n=1channelsimulation.=Tc(t)cos(2fct)Ts(t)sin(2fct)(1)Thenextsectionpresentsanoverviewofpopularmethod-PNologiesforthesimulationofmultipathfadingchannels.Twow

5、herePTc(t)=En=1Cncos(n)andTs(t)=effectsmustbesimulated:thetimeselectivityofthechannelENCsin()aretheuncorrelatedin-phaseandquadra-n=1nn(Dopplerspreading)duetomotion,andthefrequencyselectiv-turecomponentsoftheelectricfield,respectively,En=E,ity(timespreading)duetoresolvablemultipathcompone

6、nts.n=0;1;:::;N,areassumedtobeconstant,andCnaremu-Simulationapproachesarereviewedforboththesetasks.tuallyindependentnormalizedrandomvariablesrepresentingThethirdsectionpresentsanoverviewofthesimulationPN2thefadingoneachpath,suchthatE[n=1Cn]=1,wheremethodologyusedinourparticularchannelsimulato

7、r.Inpar-E[
]denotesstatisticalexpectation.n=2fnt+nareticular,thesimulatoremploysaninterpolatedfilteredGaus-thephases,withfn=(v=)cosntheDopplershiftofthesiannoisesourcetosimulatetheDopplerspreading,followedthnwave,givenamobilespeedv(m/s),ac