Spectral efficient half-duplex relaying with interference suppression  

作　　者：LI Xing-zheng,LIU Yuan-an,XIE Gang,CHANG Ling-jun,HAN Xiao Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China 

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第6期19-24,共6页中国邮电高校学报（英文版）

基　　金：supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780);the Canada-China Scientific and Technological Cooperation (2010DFA11320);the National Natural Science Foundation of China (60802033, 60873190);the Hi-Tech Research and Development Program of China (2008AA01Z211)

摘　　要：Two-hop relaying systems suffer spectral efficiency loss due to the half-duplex property of relays. This paper proposes an efficient relaying protocol which can recover the spectral efficiency loss but still work with half-duplex relays. However,there exists inter-relay interference which degrades the performance of the protocol. With this consideration,a power control policy is derived to suppress the interference using game theory,and then an algorithm is given to facilitate distributed implementation. Furthermore,impact of deploying more destination antennas on performance of the relaying protocol is investigated. Simulation results show that,with the power control policy,the proposed relaying protocol can achieve high spectral efficiency.Two-hop relaying systems suffer spectral efficiency loss due to the half-duplex property of relays. This paper proposes an efficient relaying protocol which can recover the spectral efficiency loss but still work with half-duplex relays. However,there exists inter-relay interference which degrades the performance of the protocol. With this consideration,a power control policy is derived to suppress the interference using game theory,and then an algorithm is given to facilitate distributed implementation. Furthermore,impact of deploying more destination antennas on performance of the relaying protocol is investigated. Simulation results show that,with the power control policy,the proposed relaying protocol can achieve high spectral efficiency.

关 键 词：relaying protocol distributed power control cooperative communication decode-and-forward relay game theory 

分 类 号：TN929.5[电子电信—通信与信息系统]