localized multisensor multitarget tracking frameworkWord文档格式.docx
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AbstractAbstract|Figures/TablesFigures/Tables|ReferencesReferences
Abstract
Asanewtechnology,inter-eNBcoordinationhasbeenincludedinLTE-Advancedstudyitems.Moreover,thenetworkarchitectureinLTE-Advancedsystemismodifiedtotakeintoaccountcoordinatedtransmission.Inourstudy,weexploretheproblemofjointlyoptimizingthepowerlevelandschedulingofresourceblocksforLTE-Advancednetworkbasedonorthogonalfrequencydivisionmultiplexing(OFDM).Weproposeadistributedoptimizationschemebasedonevolutionarypotentialgames,andintheprocessofobjectivefunctionmodelingweemploytheLagrangianmultipliermethodtosolvetheconstraintobjectiveoptimizationproblem.Thenparticleswarmoptimization(PSO)methodisadoptedtofindtheoptimalpowerallocationandschedulingforeachresourceblockinthemulti-cellframework.Numericalresultsprovethatproposedalgorithmnotablyimprovestheoverallthroughput,whileuserfairnessisguaranteed.Importantly,additionalcomputationandcommunicationcostintroducedbycross-layeroptimizationisalsoevaluated.
ArticleOutline
1.Introduction
2.Inter-cellinterferenceanalysis
3.Potentialgames
3.1.Definition
3.2.ExistenceanduniquenessofNE
4.ALagrangianmultipliermethodforconstraintobjectivefunctionoptimization
4.1.Systemthroughput
4.2.Fairnesscriterion
4.3.ALagrangianmultipliermethod
5.Cross-layeroptimizationalgorithmbasedonpotentialgames
5.1.Cooperationgamesmodeling
5.2.PSObasedmethodtosolveextremeproblemofmultivariatefunction
5.3.ConvergencetoNashequilibrium
6.Simulationanalysis
6.1.Performanceanalysis
6.2.Costanalysis
7.Conclusionsandfuturework
Acknowledgements
References
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127
Prediction-baseddataaggregationinwirelesssensornetworks:
CombininggreymodelandKalmanFilter
ComputerCommunications,Volume34,Issue6,3May2011,Pages793-802
GuiyiWei,YunLing,BinfengGuo,BinXiao,AthanasiosV.Vasilakos
Inmanyenvironmentalmonitoringapplications,sincethedataperiodicallysensedbywirelesssensornetworksusuallyareofhightemporalredundancy,prediction-baseddataaggregationisanimportantapproachforreducingredundantdatacommunicationsandsavingsensornodes’energy.Inthispaper,anovelprediction-baseddatacollectionprotocolisproposed,inwhichadouble-queuemechanismisdesignedtosynchronizethepredictiondataseriesofthesensornodeandthesinknode,andtherefore,thecumulativeerrorofcontinuouspredictionsisreduced.Basedonthisprotocol,threeprediction-baseddataaggregationapproachesareproposed:
Grey-Model-basedDataAggregation(GMDA),Kalman-Filter-basedDataAggregation(KFDA)andCombinedGreymodelandKalmanFilterDataAggregation(CoGKDA).ByintegratingthemeritofgreymodelinquickmodelingwiththeadvantageofKalmanFilterinprocessingdataseriesnoise,CoGKDApresentshighpredictionaccuracy,lowcommunicationoverhead,andrelativelowcomputationalcomplexity.Experimentsarecarriedoutbasedonarealdatasetofatemperatureandhumiditymonitoringapplicationinagranary.Theresultsshowthattheproposedapproachessignificantlyreducecommunicationredundancyandevidentlyimprovethelifetimeofwirelesssensornetworks.
2.Relatedwork
3.Prediction-baseddatacollectionprotocol
4.Greymodelbaseddataaggregation(GMDA)
5.Kalman-Filter-basedDataAggregation(KFDA)
5.1.Kalman-Filter-basedpredictionmodel
5.2.Kalman-Filter-basedpredictionalgorithm
6.CoGKDA
6.1.Modeling
6.2.Combinationweights
6.3.CoGKDAalgorithm
7.Experimentandperformanceevaluation
7.1.Experimentsetup
7.2.GMDA
7.3.KFDA
7.4.CoGKDA
7.5.Complexityandscalability
8.Conclusion
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128
EnergyefficientandperceivedQoSawarevideoroutingoverWirelessMultimediaSensorNetworks
AdHocNetworks,Volume9,Issue4,June2011,Pages591-607
DionisisKandris,MichailTsagkaropoulos,IliasPolitis,AnthonyTzes,StavrosKotsopoulos
WirelessSensorNetworks(WSNs)haveaneverincreasingvarietyofmultimediabasedapplications.Ιnthesetypesofapplications,networknodesshouldideallymaximizeQoSandminimizeenergyexpendituresinvideocommunication.ThisarticlepresentsPEMuR,anoveldualschemeforefficientvideocommunication,whichaimsatbothenergysavingandhighQoSattainment.Toachieveitsobjectives,PEMuRproposesthecombineduseofanenergyawarehierarchicalroutingprotocolwithanintelligentvideopacketschedulingalgorithm.Theadoptedroutingprotocolenablestheselectionofthemostenergyefficientroutingpaths,managesthenetworkloadaccordingtotheenergyresiduesofthenodesandpreventsuselessdatatransmissionsthroughtheproposeduseofanenergythreshold.Inthisway,anoutstandinglevelofenergyefficiencyisachieved.Additionally,theproposedpacketschedulingalgorithmenablesthereductionofthevideotransmissionratewiththeminimumpossibleincreaseofdistortion.Inordertodoso,itmakesuseofananalyticaldistortionpredictionmodelthatcanaccuratelypredicttheresultedvideodistortionduetoanyerrorpattern.Thus,thealgorithmmaycopewithlimitedavailablechannelbandwidthbyselectivelydroppinglesssignificantpacketspriortotheirtransmission.Simulationresultsdemonstratetheeffectivenessoftheproposedscheme.
2.Relatedwork
2.1.Hierarchicalroutingprotocols
2.2.Routeselectionschemes
2.3.Wirelessvideocommunication
2.4.Packetlossmodels
3.Proposedschemeoverview
3.1.Energyefficienthierarchicalroutingprotocol
3.2.Videopacketscheduling
3.2.1.Videodistortionmodel
3.2.2.Videotransmissionrateadaptation
3.3.PEMuRalgorithmoverview
4.Simulationsetupdescription
5.Simulationresultspresentation
6.Simulationresultsevaluation
7.Conclusions
Vitae
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129
Adaptivepower-controlledMACprotocolsforimprovedthroughputinhardware-constrainedcognitiveradionetworks
AdHocNetworks,InPress,CorrectedProof,Availableonline7January2011
HaythemBanySalameh,MarwanKrunz
Cognitiveradios(CRs)areemergingasapromisingtechnologytoenhancespectrumutilizationthroughopportunisticon-demandaccess.ManyMACprotocolsforcognitiveradionetworks(CRNs)havebeendesignedassumingmultipletransceiversperCRuser.However,inpractice,suchanassumptioncomesatthecostofextrahardware.Inthispaper,weaddresstheproblemofassigningchannelstoCRtransmissionsinsingle-hopandmulti-hopCRNs,assumingonetransceiverperCR.TheprimarygoalofourdesignistomaximizethenumberoffeasibleconcurrentCRtransmissions,andconserveenergyasasecondaryobjective,withrespecttobothspectrumassignmentandtransmissionpowersubjecttointerferenceconstraintanduserratedemands.Theproblemisformulatedunderbothbinary-levelandmulti-levelspectrumopportunityframeworks.Ourformulationappliestoanypower-raterelationship.Forsingle-hopCRNs,acentralizedpolynomial-timealgorithmbasedonbipartitematchingthatcomputestheoptimalchannelassignmentisdeveloped.WethenintegratethisalgorithmintodistributedMACprotocolsthatpreservefairness.Formulti-hopadhocCRNs,weproposeanoveldistributedMACprotocol(WFC-MAC)thatattemptstomaximizetheCRNthroughput,assumingsingletransceiverradiosbutwith“dual-receive”capability.WFC-MACusesacooperativeassignmentthatreliesonlyoninformationprovidedbythetwocommunicatingusers.ThemainnoveltyinWFC-MACliesinrequiringnoactivecoordinationwithlicensedusersandexploitingthedual-receivecapabilityofradios,thusalleviatingvariouschannelaccessproblemsthatarecommontomulti-channeldesigns.WeconducttheoreticalanalysisofourMACprotocols,andstudytheirperformanceviasimulations.TheresultsindicatethatcomparedwithCSMA/CAvariants,ourprotocolssignificantlydecreasetheblockingrateofCRtransmissions,andhenceimprovenetworkthroughput.
1.Introduction
1.1.Previousresearch
1.2.Contributions
1.3.Organization
2.Problemformulationanddesignconstraints
2.1.Networkmodel
2.2.Feasibilityconstraints
2.3.Problemformulation
3.Optimalchannelassignment
3.1.Proposedalgorithm
3.2.Channelaccessprotocolforsingle-hopCRNs
3.2.1.Assumptions
3.2.2.Operationaldetails
3.3.Remarksanddesignvariants
3.3.1.Granularityofchannelassignment
3.3.2.FairnesspropertiesofAW-MAC
3.3.3.RTS/CTShandshakeinAW-MAC
3.3.4.Channelassignmentwithamulti-levelfrequency-dependentpowerconstraint
3.3.5.AW-MACwithtwotransceiver
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