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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Veröffentlicht in:IET communications Jg. 8; H. 12; S. 2162 - 2170
Hauptverfasser: Liu, Jun, Gao, Feifei, Qiu, Zhengding
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Stevenage The Institution of Engineering and Technology 01.08.2014
John Wiley & Sons, Inc
Schlagworte:
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
Online-Zugang:Volltext
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Zusammenfassung: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.
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ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2013.1065