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Title: Selection of spatially-distributed relays for two-way relaying with network coding
Authors: Jiang, Y
Lau, FCM 
Sattar, Z
Zhou, QF
Issue Date: 2013
Source: 2013 IEEE Wireless Communications and Networking Conference (WCNC), 7-10 April 2013, Shanghai, Shanghai, China, p. 2966-2970
Abstract: To help exchanging information between two sources in a two-way relaying network with multiple relays, we consider selecting one “best” relay or a pair of “best” relays that broadcast network-coded information to other nodes (source or relay). Further, we assume that the multiple relays are random distributed in a one-dimensional or two-dimensional space between the sources and we take the path loss between the nodes into consideration. We also select the relay(s) based on the max-min criterion in both the Single Relay Selection (SRS) scheme and the Paired-Relay Selection (PRS) scheme. In particular, we propose a Distributed VIterbi Selection Algorithm (DVISA) that selects the pair of “best” relays in the PRS scheme and we describe how the nodes exchange information in a frame consisting of 4 time slots. Both our analytical and simulation results show that when the path-loss exponent is large and/or there is a sufficient number of relays to choose from, using two relay nodes can provide a lower outage compared with using only one relay node even under the same total transmit power.
Keywords: Network coding
Relay selection
Two-way relaying
Publisher: IEEE
ISBN: 978-1-4673-5938-2
978-1-4673-5937-5 (E-ISBN)
ISSN: 1525-3511
DOI: 10.1109/WCNC.2013.6555033
Rights: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
The following publication Y. Jiang, F. C. M. Lau, Z. Sattar and Q. F. Zhou, "Selection of spatially-distributed relays for two-way relaying with network coding," 2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013, pp. 2966-2970 is available at
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