Performance Analysis for Amplify-and-Forward Relay Selection with Outdated Channel State Information  

基于过时信道状态信息的放大转发中继选择协议性能分析(英文)

作　　者：钟斌 张中山 皇甫伟 王军 隆克平 

机构地区：[1]Institute of Advanced Network Technology and New Services(ANTS) and Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services,University of Science and Technology Beijing

出　　处：《China Communications》2013年第6期100-110,共11页中国通信（英文版）

基　　金：supported by the National Key Basic Research Program of China (973 Program) under Grant No. 2012CB315905;the National Natural Science Foundation of China under Grants No. 61172050,No. 60903211;the Foundation of Beijing Engineering and Technology Centre for Convergence Networks and Ubiquitous Services;the National Key Projects under Grants No. 2012ZX03001029-005,No. 2012ZX03001032-003;Beijing Science and Technology Program under Grant No. Z1111-00054011078;Program for New Century Excellent Talents in University under GrantNo. NCET-12-0774

摘　　要：The impact of outdated Channel State Information(CSI) on the performance of relay selections,including the partial relay selection and the best relay selection,is studied,with respect to Amplify-and-Forward(AF) mode cooperative systems.The proposed method is analysed by deriving the asymptotic closedform expressions for some figures of merit such as the outage probability and the Symbol Error Probability(SEP).Moreover,the validity of the proposed theoretical analysis is proven via simulations.Numerical results prove that the performance of the proposed scheme is impacted considerably by various parameters such as the number of candidate relays and the end-to-end Signal-to-Noise Ratio(SNR).In the presence of cooperative networks with outdated CSI feedback,a performance improvement of more than 3 dB in terms of either outage probability or SEP can be observed by utilizing the Source-to-Destination(S D) link rather than the method of simply increasing the number of relays.The impact of outdated Channel State Information （CSI） on the performance of relay selections, including the partial relay selection and the best relay selection, is studied, with respect to Amplify-and-Forward （AF） mode cooperative systems. The proposed method is analysed by deriving the asymptotic closedform expressions for some figures of merit such as the outage probability and the Symbol Error Probability （SEP）. Moreover, the validity of the proposed theoretical analysis is proven via simulations. Numerical results prove that the performance of the proposed scheme is impacted considerably by various parameters such as the number of candidate relays and the end-to-end Signal-to-Noise Ratio （SNR）. In the presence of cooperative networks with outdated CSI feedback, a performance improvement of more than 3 dB in terms of either outage probability or SEP can be observed by utilizing the Source-to-Destination （S→D） link rather than the method of simply increasing the number of relays.

关 键 词：RELAYS AF outage probability SEP outdated CSI cooperative systems 

分 类 号：TN911.2[电子电信—通信与信息系统]