Title :
Joint Robust Weighted LMMSE Transceiver Design for Dual-Hop AF Multiple-Antenna Relay Systems
Author :
Xing, Chengwen ; Ma, Shaodan ; Fei, Zesong ; Wu, Yik-Chung ; Kuang, Jingming
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Abstract :
In this paper, joint transceiver design for dual-hop amplify-and-forward (AF) MIMO relay systems with Gaussian distributed channel estimation errors in both two hops is investigated. Due to the fact that various linear transceiver designs can be transformed to a weighted linear minimum mean-square-error (LMMSE) transceiver design with specific weighting matrices, weighted mean square error (MSE) is chosen as the performance metric. Precoder matrix at source, forwarding matrix at relay and equalizer matrix at destination are jointly designed with channel estimation errors taken care of by Bayesian philosophy. Several existing algorithms are found to be special cases of the proposed solution. The performance advantage of the proposed robust design is demonstrated by the simulation results.
Keywords :
Bayes methods; Gaussian channels; amplify and forward communication; channel estimation; equalisers; least mean squares methods; matrix algebra; precoding; radio transceivers; Bayesian philosophy; Gaussian distributed channel estimation error; channel estimation error; dual-hop AF multiple-antenna relay system; dual-hop amplify-and-forward MIMO relay system; equalizer matrix; forwarding matrix; joint robust weighted LMMSE transceiver design; linear transceiver design; performance metrics; precoder matrix; specific weighting matrix; weighted linear minimum mean-square-error transceiver design; Channel estimation; Covariance matrix; MIMO; Matrix decomposition; Optimization; Relays; Transceivers;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2011.6133873
