Title :
Joint Source-Relay Precoder and Decoder Designs for Amplify-and-Forward MIMO Relay System with Imperfect Channel State Information
Author :
Zhang, Jianhua ; Bao, Wei ; Zhang, Ping ; Wang, Qiang
Author_Institution :
Wireless Technol. Innovation Inst., Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This paper addresses joint source-relay precoder and decoder designs for a single data flow transmission in amplify-and-forward (AF) multiple-input-multiple-output (MIMO) relay networks with imperfect channel state information (CSI). First, the precoder is obtained by improving the lower bound of the received SNR under power constraints at source and relay. Then, we derive the decoder to maximize the average received signal-to-noise ratio (SNR). Numerical results show a great improvement on the received SNR by applying our proposed schemes. Besides, we also make a discussion about the impact which brought by the channel correlation coefficients based on our derived received SNR expression and the numerical results.
Keywords :
MIMO communication; amplify and forward communication; combined source-channel coding; data communication; decoding; precoding; relay networks (telecommunication); AF multiple-input-multiple-output relay networks; CSI; SNR expression; amplify-and-forward MIMO relay system; channel correlation coefficient; imperfect channel state information; joint source-relay decoder design; joint source-relay precoder design; power constraints; signal-to-noise ratio; single data flow transmission; Correlation; Decoding; Eigenvalues and eigenfunctions; MIMO; Matrix decomposition; Relays; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398988
