多天线双向中继系统的中断概率分析

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1、多天线双向中继系统的中断概率分析多天线双向中继系统的中断概率分析王睿，陶梅霞上海交通大学电子工程系，上海　200240摘要：本文研究了安装多天线中继节点双向中继系统的中断概率分析，并具体讨论了两时隙传输协议和三时隙传输协议。针对每种协议，首先假设中继节点不能获得瞬时信道信息，从而中继节点简单地利用统计信道信息产生固定中继增益来进行中继节点的线性处理。其次，考虑了中继节点能够获得瞬时信道信息，并利用该信道信息在中继节点进行迫零预编码操作。本文推导了所有情况下的中断概率闭式解。基于这些闭式解，本文进一步分析了两时隙协

2、议下的分集复用折中。理论分析结果表明：对于不采用预编码的场景，系统所能获得的分集度为1，和中继天线个数M无关。而当采用中继预编码，可获得M?1的分集度。关键词：信与信息系统;双向中继;物理层网络编码;预编码;中断概率中图分类号：TN911.22OutagePerformanceAnalysisofTwo-WayRelaySystemwithMulti-AntennaRelayNodeWANGRui,TAOMei-XiaDepartmentofElectronicEngineering,ShanghaiJiaoTo

3、ngUniversity,Shanghai,200240Abstract:Thispaperpresentsananalyticalstudyontheoutageperformanceofamplify-and-forwardAFtwo-wayrelaysystemwithmulti-antennarelaynodeRN.Twomajorbidirectionalprotocols,i.e.,twotimeslotsmultipleaccessbroadcastMABCprotocolandthreetimes

4、lotstimedivisionbroadcastTDBCprotocol,areconsideredrespectively.Forbothconsiderations,we?rstassumethatinstantaneouschannel-state-informationCSIisunavailableatRN,thusRNjustsimplyusesthe?xedrelaygainderivedfromstatisticalCSItoscalethereceivedsignalsbeforeforwar

5、ding.WethenconsiderthescenariowhereRNcanobtaintheinstantaneousCSItoperformthezero-forcingZFrelayprecoding.Theclosed-formexpressionsofoutageprobabilityarederivedforallcases.Basedontheseexpressions,thediversity-multiplexingtradeo?DMTisfurtherobtainedfortheMABCp

6、rotocol.Theanalyticalresultsshowthat,fornon-precodingMABCscheme,thediversityorderof1canonlybeobtainedanditisirrelevanttotherelayantennanumberM.WhilefortheZF-precodingcase,thediversityorderofM?1canbeobtained.基金项目：TheDoctoralFundofMinistryofEducationofChina2008

7、02481002,theNationalNaturalScienceFounda-tionofChinaundergrant60902019andtheInnovationProgramofShanghaiMunicipalEducationCommissionundergrant11ZZ19.作者简介：WangRui（1984-）,male,majorresearchdirection:two-wayrelaying,physicallayernetworkcodingandprecoding.Correspo

8、ndenceauthor:TaoMeixia（1978-）,female,associateprofessor,majorresearchdirection:cooperativeandrelaycommunications,physicallayernetworkcoding,interferencenetworks,wirelessresourceallocation