Title :
Optimal Joint Source and Relay Beamforming for Parallel MIMO Relay Networks
Author :
Toding, Apriana ; Khandaker, Muhammad R A ; Rong, Yue
Author_Institution :
Dept. Electr. Comput. Engr., Curtin Univ. of Technol., Bentley, WA, Australia
Abstract :
In this paper, we study the optimal structure of the source precoding matrix and the relay amplifying matrices for multiple-input multiple-output (MIMO) relay communication systems with parallel relay nodes. We show that both the optimal source precoding matrix and the optimal relay amplifying matrices have a beamforming structure. Using the optimal structure, a joint source and relay power loading algorithm is developed to minimize the mean-squared error (MSE) of the signal waveform estimation. Compared with existing algorithms for parallel MIMO relay networks, the proposed joint source and relay beamforming algorithm has a significant improvement in the system bit-error-rate performance.
Keywords :
MIMO communication; array signal processing; error statistics; matrix algebra; mean square error methods; source coding; MIMO relay communication systems; bit error rate; mean-squared error; multiple-input multiple-output relay communication systems; optimal joint source; parallel MIMO relay networks; relay amplifying matrices; relay beamforming; signal waveform estimation; source precoding matrix; Array signal processing; Bit error rate; Covariance matrix; Joints; MIMO; Niobium; Relays;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600693
