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ID:34746600
大小:727.18 KB
页数:10页
时间:2019-03-10
《3Two dimensional cross-layer optimization for packet transmission over fading channel .pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、IEEETRANSACTIONSONWIRELESSCOMMUNICATIONS,VOL.7,NO.10,OCTOBER20083813TwoDimensionalCross-LayerOptimizationforPacketTransmissionoverFadingChannelXiaofengBai,StudentMember,IEEE,andAbdallahShami,Member,IEEEAbstract—Inthispaperasingle-input-single-outputwirelesswher
2、erun-timepoweradjustmentisnotavailable.2)Thisdatatransmissionsystemwithadaptivemodulationandcodingworkdevelopsananalyticalmodeloftheproposedalgorithmovercorrelatedfadingchannelisconsidered,whererun-timeforevaluatingvariousQoSperformancemetrics.3)Combinedpowerad
3、justmentisnotavailable.Higherlayerdatapacketswithpreviousresearch,thisworkproposesanewmethodforareenqueuedintoafinitesizebufferspacebeforebeingre-leasedintothetime-varyingwirelesschannel.Withoutfixingthecross-layerperformanceoptimization.4)Basedontheoptimalphysic
4、allayererrorprobability,theobjectiveistominimizethesolution,thisworkintroducesatractabledesignframeworkaveragejointpacketlossrateduetobotherroneoustransmissionthatgeneratesasetofsuboptimalschemeswithscalableandbufferoverflow.Twooptimizationtechniquesareincorpo-c
5、omplexity-optimalitytradeoff,forpracticalimplementation.ratedtoachievethebestsolution.ThefirstispolicydomainTherestofthispaperisorganizedasfollows.InSectionIIoptimizationthatformulatesthedatarateadaptationdesignasclassicalMarkovdecisionproblem.Thesecondischannel
6、webrieflyreviewsomerelatedresearchwork.InSectionIIIdomainoptimizationthatappropriatelypartitionsthechannelwegivethesystemmodelusedforthisstudy.ThemultiratevariationbasedonparticularfadingenvironmentandcarriedtransmissionschedulingisformulatedasaMarkovdecisiontra
7、fficpattern.ThederivedpolicydomainanalyticalmodelcanprobleminSectionIVandfurtheranalyzedinSectionV.preciselymapanypolicydesignintovariousQoSperformanceInSectionVIandVIIthetwo-dimensionaloptimizationmetricswithfinitebuffersetup.Wethenproposeatractablesuboptimizati
8、onframeworktoproducedifferenttwo-dimensionalandsuboptimizationdesignframeworksareexposited,respec-suboptimalsolutionswithscalablecomplexity-optimalitytradeofftively.Finally,
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