Multiuser Two-Way Amplify-and-Forward Relay Processing and Power Control Methods for Beamforming Systems

Author

Joung, Jingon ; Sayed, Ali H.

Author_Institution

Dept. of Modulation & Coding, Inst. for Infocomm Res. (I2R), Singapore, Singapore

Volume

58

Issue

3

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

1833

Lastpage

1846

Abstract

In this paper, multiple-input multiple-output (MIMO) relay transceiver processing is proposed for multiuser two-way relay communications. The relay processing is optimized based on both zero-forcing (ZF) and minimum mean-square-error (MMSE) criteria under relay power constraints. Various transmit and receive beamforming methods are compared including eigen beamforming, antenna selection, random beamforming, and modified equal gain beamforming. Local and global power control methods are designed to achieve fairness among all users and to maximize the system signal-to-noise ratio (SNR). Numerical results show that the proposed multiuser two-way relay processing can efficiently eliminate both co-channel interference (CCI) and self-interference (SI).

Keywords

MIMO communication; cochannel interference; diversity reception; eigenvalues and eigenfunctions; interference suppression; least mean squares methods; power control; transceivers; antenna selection; cochannel interference; minimum mean-square-error ceriteria; modified equal gain beamforming; multiple-input multiple-output relay transceiver; multiuser two-way amplify-and-forward relay processing; power control; receive beamforming; self-interference; transmit beamforming; zero-forcing; Beamforming; minimum mean-square error (MMSE); multiple-input multiple-output (MIMO); multiuser; power control; two-way relay; zero-forcing (ZF);

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2009.2038668

Filename

5353666