Beamforming Amplify-and-Forward Relay Networks With Feedback Delay and Interference

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Hoc Phan, Quang Trung Duong, Maged Elkashlan, Hans-Jürgen Zepernick
Title: Beamforming Amplify-and-Forward Relay Networks With Feedback Delay and Interference
Journal: IEEE Signal Processing Letters
Year: 2012
Volume: 19
Issue: 1
Pagination: 16 - 19
ISSN: 1070-9908
Publisher: IEEE
URI/DOI: 10.1109/LSP.2011.2175217
ISI number: 000297583800001
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/com
Authors e-mail: quang.trung.duong@bth.se
Language: English
Abstract: In this letter, we investigate the effect of feedback
delay on the performance of a dual-hop amplify-and-forward
(AF) relay network with beamforming in the presence of multiple interferers over Rayleigh fading channels. Specifically, we derive closed-form expressions for the outage probability (OP) and the symbol error rate (SER). Furthermore, to render insights into the effect of feedback delay and interference on the network performance, asymptotic OP and SER are also presented. These asymptotic expressions are very tight in the high signal-to-noise ratio regime, readily enabling us to obtain the diversity and coding gains of the considered network.
Subject: Telecommunications\General
Keywords: Amplify-and-forward (AF), beamforming, feedback delay, interference, outage probability, symbol error rate
Edit