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

Volume

22

Issue

8

fYear

2015

fDate

Aug. 2015

Firstpage

1079

Lastpage

1083

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;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2014.2386310

Filename

6999922