Selection of spatially-distributed relays for two-way relaying with network coding

Yunxiang Jiang, Chung Ming Lau, Zeeshan Sattar, Qing F. Zhou

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


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.
Original languageEnglish
Title of host publication2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
Number of pages5
Publication statusPublished - 21 Aug 2013
Event2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, China
Duration: 7 Apr 201310 Apr 2013


Conference2013 IEEE Wireless Communications and Networking Conference, WCNC 2013


  • Network coding
  • relay selection
  • two-way relaying

ASJC Scopus subject areas

  • Engineering(all)

Cite this