Unequal Error Protection for Wireless Multimedia Transmission in Decode-and-Forward Relay Networks

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Quang Trung Duong, Ulrich Engelke, Hans-Jürgen Zepernick
Title: Unequal Error Protection for Wireless Multimedia Transmission in Decode-and-Forward Relay Networks
Conference name: IEEE Radio and Wireless Symposium
Year: 2009
ISBN: 978-1-4244-2699-7
Publisher: IEEE
City: San Diego, CA
ISI number: 000273914400169
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: quang.trung.duong@bth.se
Language: English
Abstract: In this paper, we propose an unequal error protection (UEP) scheme for multimedia transmission over wireless decode-and-forward (DF) relay networks. We prove that relay selection combining (R-SC) mode yields a better error rate performance than all-participate relays, i.e., distributed spacetime codes (DSTC) and orthogonal transmission with maximum ratio combining (OT-MRC) at the destination. Hence, we apply the R-SC scheme for transmitting bit sequence with high priority while the cooperative spatial multiplexing scheme is employed for
the bit-stream with low priority. With this strategy, we achieve the maximum spatial diversity gain for high priority data and a high spatial multiplexing gain for low priority data. Monte- Carlo simulations and analytical results are shown to validate the proposed UEP scheme.
Subject: Signal Processing\General
Telecommunications\General
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