Precoder Design for MIMO Relay Networks with Direct Link and Decision Feedback Equalisation

Author

Millar, Andrew P. ; Weiss, Stephan ; Stewart, Robert W.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Strathclyde, Glasgow, UK

Volume

15

Issue

10

fYear

2011

fDate

10/1/2011 12:00:00 AM

Firstpage

1044

Lastpage

1046

Abstract

In this letter we derive the source and relay precoders for a multiple-input multiple-output (MIMO) relay system with zero-forcing (ZF) decision feedback equalisation (DFE) when a direct link exists between the source and destination. Assuming full channel state information (CSI) is available at each node in the network, the processors are optimised for a large class of objective functions subject to the ZF condition and average power constraints at both the source and relay terminals. Simulation results show that the proposed design outperforms existing techniques in terms of bit error ratio (BER).

Keywords

MIMO communication; decision feedback equalisers; error statistics; precoding; radio links; BER; MIMO relay network; bit error ratio; direct link; multiple-input multiple-output relay system; precoder design; processor optimisation; relay precoder; zero-forcing decision feedback equalisation; Covariance matrix; Decision feedback equalizers; MIMO; Matrix decomposition; Relays; Signal to noise ratio; Transceivers; MIMO relay; decision feedback equalisation; direct link; non-linear transceiver design; zero-forcing;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.081211.110691

Filename

5997328