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1、RadiooverFiberSystemappliedtoIEEE802.15.4Standard1ArismarCerqueiraS.Jr.,2,D.C.ValenteeSilva",M.A.Q.R.Fortes",L.F.daSilva',O.C.Branquinho''3andM.L.F.Abbade1FaculdadedeTecnologia,UniversidadeEstadualdeCampinas(UNICAMP),Limeira-SP,Brazil.2R4FTecnologiaemTelecomunicacoesLtda,Campinas-SP,Brazil
2、.3FaculdadedeEngenhariaEletrica,PontiffciaUniversidadeCat6licadeCampinas,Campinas-SP,Brazil.Abstract-WehaveexperimentallyappliedtheRadiooverFiber(RoF)technologytoaWirelessSensorNetwork(WSN)basedonIEEE802.15.4standard.NumericalsimulationsandII.EXPERIMENTALSETUPexperimentalresultsdemonstrate
3、asuccessfulimplementationofThesystemperformanceoftheRoFsystembasedonaRoFtechnologyoperatingat2.4GHzbandoveratleast160kmofageographically-distributedopticalnetwork.IEEE802.15.4standardwithThinarchitecturehasbeenIndexTerms-RadiooverFiber,Hybridsystems,Wirelessanalyzedinarealgeographicallydis
4、tributedopticalnetwork,SensorNetworkandIEEE802.15.4.calledKyaTera,whichisaBrazilianopticalnetworkexclusivelydedicatedtoresearchpurposes.TheopticallinksfromthisnetworkareformedbyaerialandundergroundI.INTRODUCTIONcables.ThismeansexperimentscarriedoutinitpermitstoThenextgenerationofaccessnetw
5、orksisrushingtheevaluatetheperformanceunderpracticalconditionsthatmayneedsfortheconvergenceofwiredandwirelessservicestolead,forinstance,severechangesinthesignalpolarization[5].offerendusersgreaterchoice,convenienceandvarietyinanTwodifferentRoFsystemshavebeeninvestigatedintheefficientway[1]
6、.ThisscenariowillrequirethesimultaneousKyaTeranetwork:awiredRoFsystemandaRoFsystemwithdeliveryofvoice,dataandvideoserviceswithmobilityfeatureawirelesslink.Theexperimentalsetupoffirstcase,Setup1,istoservethefixedandmobileusersinaunifiednetworkingshowninFig.I.Alaseroperatingat1550nmisdirectl
7、yplatform.Inotherwords,newtelecomsystemsrequirehigh•modulatedbya3.0dBmRFsignalat2.48GHzwithtransmissionbandwidthsandreliablemobility.TheRadiooverQuadraturePhaseShiftKeying(QPSK)modulation.ThisFiber(RoF)technology[2][3]representsakeysolutionforopticalsignalwith
