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WPDM中降低PAPR的联合算法研究.docx

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WPDM中降低PAPR的联合算法研究 Title:JointAlgorithmResearchonPAPRReductioninWPDM Abstract: WirelessPowerDivisionMultiplexing(WPDM)isanemergingcommunicationtechnologythataimstoimprovespectralefficiencyandenergyefficiencyinwirelesscommunicationsystems.However,oneofthemajorchallengesinWPDMisthehighpeak-to-averagepowerratio(PAPR),whichcancausesignaldistortion,decreasedspectralefficiency,andincreasedpowerconsumption.Therefore,thispaperfocusesonthejointalgorithmresearchforPAPRreductioninWPDMsystems.Weinvestigatevariousstate-of-the-artPAPRreductionmethodsandproposeanoveljointalgorithmthatcombinesthesetechniquestoeffectivelymitigatethePAPRissueinWPDM. Keywords:WPDM,PAPRreduction,jointalgorithm,spectralefficiency,energyefficiency 1.Introduction WirelessPowerDivisionMultiplexing(WPDM)isaninnovativetechnologythatenablessimultaneouswirelesspowertransferanddatacommunication.WPDMofferspromisingbenefitsintermsofenergyandspectralefficiency,makingitsuitableforvariousapplications,includingInternetofThings(IoT),smartgrids,andwirelesssensornetworks.However,WPDMfacesseveraltechnicalchallenges,oneofwhichisthehighPAPR. 2.PAPRinWPDM ThenatureofWPDMsignalsresultsinahighPAPR,whichoccursduetothesuperpositionofpowersignalsforenergytransferandinformationsignalsfordatacommunication.HighPAPRcanleadtodistortionandnon-linearitiesinthepoweramplifiers,reducingtheoverallsystemperformance.Therefore,reducingPAPRisvitalforachievingreliableandefficientWPDMsystems. 3.PAPRReductionTechniques SeveralPAPRreductiontechniqueshavebeenproposedforsinglecarriermodulationschemes,suchasamplitudeclippingandfiltering,selectedmapping,tonereservation,andpartialtransmitsequence.However,thesemethodsmaynotbedirectlyapplicabletoWPDMduetotheuniquecharacteristicsofcombinedpoweranddatasignals.Therefore,ajointalgorithmthattakesintoaccountbothaspectsisnecessary. 4.ProposedJointAlgorithmforPAPRReduction Inthissection,wepresentanoveljointalgorithmforPAPRreductioninWPDMsystems.Thealgorithmcombinesselectedmapping(SLM)andpartialtransmitsequence(P