无线协作网络中基于nash讨价还价博弈的资源联合分配和基于hungarian方法的协作伙伴选择

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1、无线协作网络中基于Nash讨价还价博弈的资源联合分配和基于Hungarian方法的协作伙伴选择无线协作网络中基于Nash讨价还价博弈的资源联合分配和基于Hungarian方法的协作伙伴选择黄双林，魏蛟龙，刘彩华中科技大学电子与信息工程系，武汉　430074摘要：研究了无线协作通信网络中自私节点之间基于Nash讨价还价博弈的资源分配和协作伙伴选择的问题。系统每一个参与协作的节点既是源节点又潜在地可能作为中继节点。参与协作的两个自私节点由于都能够从相互帮助中获得额外的速率增益而都乐意分享自己的功率和频带帮助协作伙伴进行中继。首先，提出了

2、一个两用户搜索算法以解决两个互相协作用户之间进行带宽和功率的联合分配的讨价还价问题。接着，基于Hungarian方法提出了一种针对多用户情况下如何进行协作伙伴选择的算法。基于Nash讨价还价解的资源分配本身具有公平性，以及基于Hungarian方法的协作伙伴选择的算法是以整个网络速率增益为目标的。仿真结果表明协作伙伴之间的资源分配保证了公平性，同时能优化了整个网络的速率增益。关键词：中继选择，带宽分配，功率分配，Nash讨价还价解中图分类号：TN92NashBargainingGameBasedJointResourceAlloca

3、tionandHungarianMethodBasedPartnerSelectionforWirelessCooperativeNetworksHUANGShuanglin,WEIJiaolong,LIUCaiDepartmentofElectronicsandInformationEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074Abstract:Inwirelesscommunicationnetworks,thecooperativecommuni

4、cationperformancedependsoncarefulresourceallocation.Thispaperconsiderstheproblemofresourcesharingamongsel??shnodesinwirelesscooperativenetworks.Inthesystem,eachnodecanactasa-2-sourceaswellasapotentialrelay,andbothnodesarewillingtoachieveanextrarateincreasebyjointlyadju

5、stingtheirchannelbandwidthandpowerlevelsforcooperativerelaying.First,atwo-useralgorithmisproposedtobargainjointbandwidthandpowerallocation(JBPA)betweentwousers.ThenamultiuserbargainingalgorithmisdevelopedbasedontheHungarianmethod.NBSisappliedtoformulatetheJBPAproblemto

6、guaranteefairness.And,theoptimalcoalitionsareformedbyusingtheHungarianmethod,suchthattheoverallnetworkrateincreaseisalsomaximizedformultipleusers.SimulationresultsindicatetheNashbargainingsolution(NBS)resourcesharingisfairandthefairnessofresourceallocationonlydependson

7、howmuchcontributionitspartnercanmaketoitsrateincrease.Meanwhile,theproposedalgorithmhasfastconvergencetotheoptimumandthemultiuserbargainingalgorithmcanguaranteefairnessbetweencooperativepartner,butalsomaximizetheoverallnetworkrateincrease.Keywords:Relayselection,bandwi

8、dthallocation,powercontrol,Nashbargainingsolution.0IntroductionCooperativediversityhasbeenproposedforwirelessnetworka