Robust Distributed Beamforming For Time Asynchronous Cooperative Communications Systems

Yin Shi-yuan; Wang Hui-ming; Yin Qin-ye; Xia Xiang-gen

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Robust Distributed Beamforming For Time Asynchronous Cooperative Communications Systems

Yin Shi-yuan 1,Wang Hui-ming 1,Yin Qin-ye 1,Xia Xiang-gen 2

1.Department of Electronics and Information Engineering,

2.Department of Electrical and Computer Engineering,

*Correspondence author

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Funding: FundamentalResearch Funds For the Central University （No.No.2011jdhz06）, the Open Research Fund of State Key Laboratory of Mobile Communications In Southeast University （No.No.2012D09）, the Industrial Project In Shaanxi Province （No.No.2012GY2-28）, the Specialized Research Fund For The Doctoral Programof Higher Education of China （No.No. 20110201120013）

Opened online:18 October 2013

Accepted by: none

Citation: Yin Shi-yuan,Wang Hui-ming,Yin Qin-ye.Robust Distributed Beamforming For Time Asynchronous Cooperative Communications Systems[OL]. [18 October 2013] http://en.paper.edu.cn/en_releasepaper/content/4563656

A robust distributed beamforming approach for time asynchronous cooperative communications systems is developed. In this method, the effect of time-asychronization is considered. The minimum receiving SINR on the destination is maximized subject to the constraints that individual relay transmitted power is limited. This distributed beamforming problem is shown to be a quasi-convex problem and can be solved using semi-definite programming along with a bisection search method. Simulation results demonstrate that the proposed method is robust to the time-asychronization and its performance is better than both the MRC and the non-robust method.

Keywords:communication and information system; time-asychronization; distributed beamforming; convex problem; semi-definite programming

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