Diversity-multiplexing tradeoff of half-duplex multi-input multi-output two-way relay channel with decode-and-forward protocol  

作　　者：苏玉萍 Li Ying Liu Yang 

机构地区：[1]State Key Lab of ISN,Xidian University

出　　处：《High Technology Letters》2015年第3期364-370,共7页高技术通讯（英文版）

基　　金：Supported by the National Basic Research Program of China(No.2012CB316100);National Natural Science Foundation of China(No.61072064,61301177)

摘　　要：A multi-input multi-output(MIMO) separated two-way relay channel(STWRC) is considered,where two users exchange their messages via a relay node.When each link is quasi-static Rayleigh fading,the achievable diversity-multiplexing tradeoff(DMT) of the half-duplex STWRC is analyzed.Firstly,the achievable DMT of the STWRC with static decode-and-forward(DF) protocol is obtained.Then,a dynamic decode-and-forward(DDF) protocol for the STWRC is proposed,where the relay listening time varies dynamically with the channel qualities of the links between two users and the relay.Finally,the achievable DMT of the proposed DDF protocol is derived in a case-bycase manner.Numerical examples are also provided to verify the theoretical analysis of both protocols.A multi-input multi-output （MIMO） separated two-way relay channel （STWRC） is considered, where two users exchange their messages via a relay node. When each link is quasi-static Rayleigh fading, the achievable diversity-multiplexing tradeoff （DMT） of the half-duplex STWRC is ana- lyzed. Firstly, the achievable DMT of the STWRC with static decode-and-forward （DF） protocol is obtained. Then, a dynamic decode-and.forward （DDF） protocol for the STWRC is proposed, where the relay listening time varies dynamically with the channel qualities of the links between two users and the relay. Finally, the achievable DMT of the proposed DDF protocol is derived in a case-by- case manner. Numerical examples are also provided to verify the theoretical analysis of both proto- cols.

关 键 词：two-way relay channel （TWRC） HALF-DUPLEX diversity-multiplexing tradeoff（DMT） decode-and-forward （ DF） outage probability 

分 类 号：TN919.3[电子电信—通信与信息系统]