Title :
Joint optimization for MIMO AF multiple-relay systems with correlated channel uncertainties
Author :
Chia-Chang Hu ; Yi-Shiang Chiu ; Sheng-Shang Lin
Author_Institution :
Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
In the paper, the source/relays-precoders and destination-equalizer combined optimization is proposed in a dual-hop multiple-input multiple-output (MIMO) amplify-and-forward (AF) multiple-relay system with correlated channel uncertainties in both hops. By taking correlated channel uncertainties into account, a robust transceiver joint design is developed based on the minimum mean-squared error (MMSE) criterion under individual power constraints at the source and relays. Simulation results illustrate that the robust transceiver design architecture for an AF-MIMO system equipped with multiple relays outperforms substantially the non-robust transceiver design.
Keywords :
MIMO communication; amplify and forward communication; correlation methods; equalisers; mean square error methods; optimisation; precoding; radio transceivers; relay networks (telecommunication); telecommunication power management; wireless channels; MIMO AF multiple-relay system; MMSE criterion; correlated channel uncertainties; destination-equalizer combined optimization; dual-hop multiple-input multiple-output amplify-and-forward multiple-relay system; joint optimization; minimum mean-squared error criterion; power constraint; robust transceiver design architecture; robust transceiver joint design; source/relays-precoder; MIMO; MMSE; amplify-and-forward (AF); correlated channel uncertainty; equalizer; precoder; relay;
Conference_Titel :
Global Communications Conference (GLOBECOM), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-0920-2
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2012.6503690
