Robust transceiver design for multi-user multiple-input multiple-output amplify-and-forward relay systems

In this study, the authors consider the robust transceiver design in a dual-hop multi-user multiple-input multiple-output amplify-and-forward relay system. By incorporating the antenna correlation at both ends of the channel and taking the channel estimation errors into account, the authors propose...

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Vydané v:	IET communications Ročník 8; číslo 12; s. 2162 - 2170
Hlavní autori:	Liu, Jun, Gao, Feifei, Qiu, Zhengding
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Stevenage The Institution of Engineering and Technology 01.08.2014 John Wiley & Sons, Inc
Predmet:	Allocations Amplification amplify and forward communication amplify‐and‐forward relay system antenna correlation antennas Approximation channel estimation channel estimation errors Channels closed‐form solutions Convergence convex subproblems Design engineering dual‐hop multiuser multiple‐input‐multiple‐output system iterative algorithm iterative methods mean square error methods MIMO communication minimum sum mean‐square‐error criterion power allocation problems radio transceivers relay networks (telecommunication) Relay systems relaying structure robust transceiver design Transceivers iterative methods antennas closed-form solutions convergence radio transceivers robust transceiver design dual-hop multiuser multiple-input-multiple-output system amplify-and-forward relay system amplify and forward communication antenna correlation iterative algorithm minimum sum mean-square-error criterion power allocation problems channel estimation convex subproblems channel estimation errors relaying structure mean square error methods MIMO communication relay networks (telecommunication)
ISSN:	1751-8628, 1751-8636
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Shrnutí:	In this study, the authors consider the robust transceiver design in a dual-hop multi-user multiple-input multiple-output amplify-and-forward relay system. By incorporating the antenna correlation at both ends of the channel and taking the channel estimation errors into account, the authors propose two robust design approaches under the minimum sum mean-square-error criterion. Specifically, they decouple the original problem into three convex sub-problems in the first approach and develop an iterative algorithm with guaranteed convergence. The second approach converts the original problem into simple power allocation problems utilising a certain relaying structure, and the approximate closed-form solutions are derived. Some practical implementation issues are also discussed. Simulation results are provided to demonstrate the effectiveness of the proposed approaches.
Bibliografia:	SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23
ISSN:	1751-8628 1751-8636
DOI:	10.1049/iet-com.2013.1065