NDLI: Optimal cooperative beamforming design of AF MIMO two-way relay channels

Content Provider	IEEE Xplore Digital Library
Author	Zibin Wang Linhua Zheng Zhengdong Zhou Yonghui Li
Copyright Year	2011
Description	Author affiliation: School of Electrical and Information Engineering, The University of Sydney, NSW, 2006, Australia (Zhengdong Zhou; Yonghui Li) \|\| School of Electronic Science and Engineering, National University of Defense Technology, Changsha Hunan, 410073, China (Zibin Wang; Linhua Zheng)
Abstract	In this paper, we design the beamforming in multiple-input multiple-output (MIMO) two-way relay channels to minimize the sum mean squared errors (SMSE). Two source nodes communicate to each other with the help of multiple relays each with a single antenna. A centralized and a distributed scheme are proposed. In the first scheme, relays are assumed to be able to fully cooperate with each other and the system can be equivalent to a single relay with multiple antennas. Relay beamforming under total power constraint of all relays is designed. In the second scheme, there are no cooperation between relay nodes, and beamforming schemes under relay total power constraint and individual power constraint are designed, respectively. The simulation results show that beamforming at source and relay nodes significantly improve the average bit error rate (BER) performance. Furthermore, with cooperation across different relays, the performance of the centralized scheme is better than the distributed one, but the latter one is much more practical.
Starting Page	366
Ending Page	370
File Size	222276
Page Count	5
File Format	PDF
ISBN	9781457701009
e-ISBN	9781457701016
DOI	10.1109/ChinaCom.2011.6158180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	two-way relay channels(TWRCs) Array signal processing Bit error rate amplify-and-forward(AF) Vectors MIMO beamforming Relays Antennas Signal to noise ratio
Content Type	Text
Resource Type	Article

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