协同通信与af和df中继协议详情

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1、实用文案AbstractNowadays,thereisatrendforcommunicationsystemthatthewholenetworksystemisbecomingdynamicsothattherearealwayshavingdevicesshouldbeembeddedandremoved.Conventionalwiredcommunication,duetothecomplexityofcabling,doesnotadapttothemoderncommunicationsystem.Wirelesstechniquehasbeenusedwid

2、elybecausedevicescanbeconnectedbyelectromagnetismwavewithoutcabling.However,lowtransmittingreliablitybecauseofinter-interferencebetweenelectromagnetismwavesisthekeyproblemofwirelesscommunication.Basedonthis,thisthesisinvestigatesoneofthetechniquecalledcooperativecommunicationanditcooperativ

3、eprotocols.Cooperativecommunicationisavirtualmultiple-inputmultiple-output(MIMO)system.Toincreasethereliabilityofsignaltransmittedwithoutincreasingtheamountofcommunicationdevices,thistechnologytriestomakeeachantennashaveoneormorepartnersthatassistthemtotransmitthesignal.Inwirelessnetwork,th

4、edevicesnotonlytransmittheirownsignalbutalsoassisttheir“partner”totransmittheirsignalforsavingthecostofinstallationofadditionalantennasatbothreceiverandsenderInthisthesis,wefocusonintroducingthreemainprotocolsincooperativecommunication:Amplify-and–Forward(AF),Decode-and-Forward(DF)andCodedC

5、ooperation(CC).TheperformanceandmathematicalequationsofAFandDFareanalysed,andthenMATLABprogramswerecreatedtosimulatetheperformanceofthesetwoprotocols.标准文档实用文案Aboutthethreeprotocols,themainproceduresarealsointroduced.TheperformancecomparisonforAFandDFindifferentsignal-to-noise(SNR)aredemonst

6、rated.TheresultpresentsthattheDFprotocolshasbetterperformancethanAF.Finally,somerecommendationsandfutureworkarementionedattheendofthethesis.标准文档实用文案TableofContentsAbstractTableofcontainsListoffiguresListofabbreviationsandSymbols1Introduction..................................................

7、................................................................................91.1Background.......................................................................................................................91.2Objectives...........................