Adaptive transmission in MIMO AF relay networks with orthogonal space-time block codes over Nakagami-m fading

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Full text:
Author(s): Hoc Phan, Quang Trung Duong, Hans-Jürgen Zepernick, Lei Shu
Title: Adaptive transmission in MIMO AF relay networks with orthogonal space-time block codes over Nakagami-m fading
Journal: EURASIP Journal on Wireless Communications and Networking
Year: 2012
Issue: 11
ISSN: 1687-1499
Publisher: Springer
URI/DOI: 10.1186/1687-1499-2012-11
ISI number: 000304269500001
Other identifiers: Link to the paper: http://jwcn.eurasipjournals.com/content/2012/1/11/abstract
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 article, we apply different adaptive transmission techniques to dual-hop multiple-input multiple-output amplify-and-forward relay networks using orthogonal space-time block coding over independent Nakagami-m fading channels. The adaptive techniques investigated are optimal simultaneous power and rate (OSPR), optimal rate with constant power (ORCP), and truncated channel inversion with fixed rate (TCIFR). The expressions for the channel capacity of OSPR, ORCP, and TCIFR, and the outage probability of OSPR, and TCIFR are derived based on the characteristic function of the reciprocal of the instantaneous signal-to-noise ratio (SNR) at the destination. For sufficiently high SNR, the channel capacity of ORCP asymptotically converges to OSPR while OSPR and ORCP achieve higher channel capacity compared to TCIFR. Although TCIFR suffers from an increase in the outage probability relative to OSPR, it provides the lowest implementation complexity among the considered schemes. Along with analytical results, we further adopt Monte Carlo simulations to validate the theoretical analysis.
Subject: Computer Science\Networks and Communications
Keywords: adaptive transmission, amplify-and-forward, orthogonal space-time block coding
Note: Open Access Journal
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