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ID:34817222
大小:400.12 KB
页数:29页
时间:2019-03-11
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1、InReviewintheIEEETransactionsinWirelessCommunications(PaperTW05-002R1)Cross-LayerAdaptiveResourceManagementforWirelessPacketNetworkswithOFDMsignalingYingJunZhangandKhaledBenLetaief,Fellow,IEEECenterforWirelessInformationTechnologyTheDepartmentofElectricalan
2、dElectronicEngineeringTheHongKongUniversityofScienceandTechnologyClearWaterBay,Kowloon,HongKongEmail:yjzhang@ust.hk,eekhaled@ee.ust.hkAbstract–Adaptiveresourcemanagementhasbecomeakeytechniqueforthenext-generationwirelesssystemstoprovidedesiredservicesatappr
3、opriateQoS.Mostofthecurrentresourcemanagementalgorithmsareconfinedtoasinglelayerofthenetworkprotocolstack,whichleadstoaninferiorperformance.Inthispaper,weproposeajointMAC-PHYlayerresourcemanagementalgorithmforwirelessOFDMnetworks.Thealgorithmaimstomaximizet
4、hesystempowerefficiencygiventhatthefulfillmentoftheQoSaswellasthefairnessisguaranteed.Weformulatetheintegrateddesignofpacketscheduling,subcarrierallocation,andpowercontrolintoaconstrainedoptimizationproblem.Theformulationdefinestheinteractionandcooperationb
5、etweendifferentcomponentsofthealgorithmaswellastheinformationexchangebetweenthePHYandMAClayers.Areduced-complexityschemethatsolvestheoptimizationprobleminpolynomialtimeisthendevelopedbasedonthespecialstructureoftheproblem.Analyticalandnumericalresultswillsh
6、owthattheproposedalgorithmisabletoguaranteethesamedegreeofQoSandfairnessasthefairqueueingsystemsdoinwiredchannels.Meanwhile,thepowerefficiencyandsystemperformancearesignificantlyimprovedcomparedtotraditionalsystemswhereresourcesareallocatedbasedonastrictlay
7、eringarchitecture.KeyWords:Crosslayerdesign,OFDM,Adaptiveresourceallocation,Packetscheduling.CorrespondingAuthor:KhaledBenLetaiefEmail:eekhaled@ee.ust.hkTel:/Fax:(852)23587064/1485Internet:http://www.ee.ust.hk/~eekhaled______________________________________
8、__ThisworkissupportedinpartbytheHongKongResearchGrantCouncilundergrant#HKUST6250/04E.Cross-LayerAdaptiveResourceManagement…ZhangandBenLetaiefI.INTRODUCTIONThenext-generationwirelesssystemsareexpectedto
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