Performance Analysis of Cooperative Spatial Multiplexing with Amplify-and-Forward Relays

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Quang Trung Duong, Hans-Jürgen Zepernick
Title: Performance Analysis of Cooperative Spatial Multiplexing with Amplify-and-Forward Relays
Conference name: IEEE Personal, Indoor and Mobile Communications Symposium (PIMRC09)
Year: 2009
Publisher: IEEE
City: Tokyo - Japan
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik)
School of Engineering S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: quang.trung.duong@bth.se
Language: English
Abstract: Cooperative spatial multiplexing (CSM) systems can achieve high spatial multiplexing gain in wireless relay networks since each single-antenna relay forwards simultaneously a different subset of source messages to the destination. In this paper, the performance of CSM with amplify-and-forward (AF) relays are presented. Specifically, we derive exact closed-form expressions for symbol error probability (SEP) and achievable spectral efficiency of CSM with linear receiver in dissimilar Rayleigh fading channels. Assessing the SEP performance in the high signal-to-noise regime, we further show that CSM with AF relays obtains the first order of diversity gain. Furthermore, it has been observed that CSM outperforms two well-known cooperative diversity systems, e.g., selection combining and maximal ratio combining, in term of spectral efficiency. We also perform Monte-Carlo simulations to validate our analysis.
Subject: Signal Processing\General
Telecommunications\General
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