DocumentCode :
1270878
Title :
Robust Transceiver with Tomlinson-Harashima Precoding for Amplify-and-Forward MIMO Relaying Systems
Author :
Xing, Chengwen ; Xia, Minghua ; Gao, Feifei ; Wu, Yik-Chung
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Volume :
30
Issue :
8
fYear :
2012
fDate :
9/1/2012 12:00:00 AM
Firstpage :
1370
Lastpage :
1382
Abstract :
In this paper, robust transceiver design with Tomlinson-Harashima precoding (THP) for multi-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relaying systems is investigated. At source node, THP is adopted to mitigate the spatial intersymbol interference. However, due to its nonlinear nature, THP is very sensitive to channel estimation errors. In order to reduce the effects of channel estimation errors, a joint Bayesian robust design of THP at source, linear forwarding matrices at relays and linear equalizer at destination is proposed. With novel applications of elegant characteristics of multiplicative convexity and matrix-monotone functions, the optimal structure of the nonlinear transceiver is first derived. Based on the derived structure, the transceiver design problem reduces to a much simpler one with only scalar variables which can be efficiently solved. Finally, the performance advantage of the proposed robust design over non-robust design is demonstrated by simulation results.
Keywords :
Bayes methods; MIMO communication; amplify and forward communication; channel estimation; equalisers; matrix algebra; precoding; radio transceivers; Tomlinson-Harashima precoding; amplify-and-forward MIMO relaying systems; channel estimation errors; joint Bayesian robust design; linear equalizer; linear forwarding matrices; matrix-monotone functions; multi-hop amplify-and-forward relaying systems; multiplicative convexity; robust transceiver; Channel estimation; Linear programming; MIMO; Relays; Robustness; Transceivers; Vectors; Amplify-and-forward (AF); Tomlinson-Harashima precoding; majorization theory; multiple-input multiple-output (MIMO); robust design;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.2012.120907
Filename :
6280244
Link To Document :
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