Title :
Two-Way AF MIMO Beamforming Relay Strategies under Transmit Power Constraint
Author :
Kanghee Lee ; Kwon, Hyuck M. ; Jie Yang ; Sawan, Edwin M. ; Hyuncheol Park
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wichita State Univ., Wichita, KS, USA
Abstract :
This paper proposes a two-way amplify-and-forward (AF) multiple-input multiple-output (MIMO) beamforming relay network for the benefit of determining a set of relay amplifying matrices and transmit/receive beamforming vectors by imposing constraints on the transmit power of the sources and relay based on the minimum mean square error (MMSE) criterion. It is proven that minimizing the mean square error (MSE) in the two-way AF MIMO beamforming relay system is equivalent to maximizing the signal-to-noise ratio (SNR). Additionally, various analysis, such as SNR and MMSE cost function, will be investigated. Finally, the iterative algorithm is proposed to solve the desired optimization problem.
Keywords :
MIMO communication; amplify and forward communication; array signal processing; iterative methods; least mean squares methods; matrix algebra; minimisation; relay networks (telecommunication); vectors; MMSE cost function; SNR cost function; iterative algorithm; mean square error minimization; minimum mean square error criterion; optimization problem; receive beamforming vectors; relay amplifying matrices; signal-to-noise ratio maximization; transmit beamforming vectors; transmit power constraint; two-way AF MIMO beamforming relay strategies; two-way amplify-and-forward beamforming relay network; two-way multiple-input multiple-output beamforming relay network; Array signal processing; Bit error rate; Cost function; MIMO; Relays; Signal to noise ratio; Vectors; Two-way; amplify-and-forward (AF); beamforming; minimum mean square error (MMSE); power constraint;
Conference_Titel :
Military Communications Conference, MILCOM 2013 - 2013 IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/MILCOM.2013.97
