Open AccessOpportunistic relaying with analogue and digital network coding for two‐way parallel relay network
Author(s) -
Dai Mingjun,
Wang Hui,
Lin Xiaohui,
Zhang Shengli,
Chen Bin
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.0029
Subject(s) - linear network coding , relay , computer science , fading , multiplexing , computer network , coding (social sciences) , outage probability , algorithm , topology (electrical circuits) , decoding methods , telecommunications , mathematics , statistics , power (physics) , physics , quantum mechanics , network packet , combinatorics
A pair of terminals exchanging information via a layer of parallel relay nodes under slow fading is considered. Two protocols are proposed based on the combination of opportunistic relaying (OR) with analogue network coding (ANC), named ORANC, or with digital network coding (DNC), named ORDNC, respectively. Two schemes/versions of ORDNC, including 2‐phase ORDNC (2P‐ORDNC) and 3‐phase ORDNC (3P‐ORDNC) are proposed. Their outage performances are investigated. ORANC and 2P‐ORDNC are proved to achieve optimal diversity‐multiplexing tradeoff (DMT), whereas 3P‐ORDNC is proved to be suboptimal. However, from diversity viewpoint only, all the above schemes are proven to achieve full diversity order. Simulation results verify the analysis, and show that 3P‐ORDNC and ORANC shows advantage at low‐ and high‐data rate regions, respectively.