Performance Analysis for Amplify-and-Forward Relay Selection with Outdated Channel Estimates
Performance evaluation by considering outdated channel estimates in cooperative communications systems is formulated,with only Amplify-and-Forward (AF) relaying mode being considered in this paper.The approximation of closedform solution for the system analysis is derived.The wireless relay channels between different nodes (e.g.,source to relay,relay to destination,or source to destination) are assumed to suffer from an independent and identically distributed (i.i.d.) Rayleigh fading,and the potential performance gain obtained through cooperation and relay selection is analyzed as well.In the presence of high-speed objects,autocorrelation Jakes Model is employed to formulate the wireless fading channels.Both theoretical analyses and simulation results indicate the validity of the proposed method in terms of both the outage probability and the symbol error probability (SEP).With channel state information being known at the source node or with the Doppler Shift being negligible,a best-relay selection scheme can be performed to optimize both the outage probability and SEP.Numerical results finally validate the proposed analyses.
Amplify-and-forward(AF) Relay cooperation outage probability symbol error probability outdated channel state information
Bin Zhong Zhongshan Zhang Keping Long
Institute of Advanced Network Technologies and New Services University of Science and Technology Beijing(USTB)Beijing, China 100083
国际会议
2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))
成都
英文
495-501
2012-11-09（万方平台首次上网日期，不代表论文的发表时间）