Title :
Energy Efficient Two-Way Non-Regenerative Relaying for Relays with Multiple Antennas
Author :
Jianshu Zhang ; Haardt, Martin
Author_Institution :
Commun. Res. Lab., Ilmenau Univ. of Technol., Ilmenau, Germany
Abstract :
Energy efficient beamforming is studied for a MIMO two-way non-regenerative relaying system with multi-antenna users and a multi-antenna relay. The resulting optimization problem is non-convex. A Dinkelbach based alternating maximization (DAM) method is proposed to achieve an iterative design of the relay amplification matrix and the beamforming vectors at the users.
Keywords :
MIMO communication; antenna arrays; array signal processing; concave programming; iterative methods; relay networks (telecommunication); DAM method; Dinkelbach-based alternating maximization method; MIMO two-way nonregenerative relaying system; beamforming vectors; energy-efficient beamforming; energy-efficient two-way nonregenerative relaying; iterative design; multiantenna relay; multiantenna users; nonconvex optimization problem; relay amplification matrix; Antennas; Array signal processing; Optimization; Relays; Resource management; Signal processing algorithms; Vectors; Convex optimization; MIMO; energy efficiency; two-way relaying;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2014.2386310
