Dynamic selection scheme for cooperative relay under high mobility environment |
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| Authors: | Zhao Junhui Du Jiajiao |
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| Institution: | 1. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, P.R.China;State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, P.R.China; National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, P.R.China
2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, P.R.China |
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| Abstract: | The mobility of relay has great influence on the performance of a cooperative relay system.This paper proposes a dynamic selection scheme under the amplify-and-forward communication mode in high mobility environment,based on the estimation of channels and the power allocation for each relay node by comparing it with the pre-set threshold.This scheme is used to choose the cooperative relay dynamically for a multiple relay scenario.Simulation results show that this proposed relay selection scheme decreases the outage probability effectively,maintains system capacity well,and improves the performance of the relay system. |
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| Keywords: | high mobility cooperative relay dynamic selection |
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