Combined orthogonal physical‐layer network coding over fading two‐way relay channels. (14th August 2013)

• Record Type: Journal Article
• Authors: Li, Bo; Chong, Peter Han Joo; Wang, Gang; Yang, Hongjuan; Guan, Yongliang
• Is Part Of: International journal of communication systems. Volume 27:Number 12(2014:Dec.)
• Page Start: 4265
• Page End: 4279
• Publication Date: 2013-08-14
• Subjects: Telecommunication systems -- Periodicals; 621.382
• DOI: 10.1002/dac.2610
• Languages: English
• ISSNs: 1074-5351

Abstract

<abstract abstract-type="main"> <title>SUMMARY</title> <p>This paper proposes a new physical‐layer network coding (PNC) scheme, named combined orthogonal PNC (COPNC), for fading two‐way relay channels. The scheme is based on orthogonal PNC (OPNC). In the scheme, the two source nodes employ orthogonal carriers, and the relay node makes an orthogonal combining of the two information bits rather than exclusive or (XOR), which is employed in most PNC schemes. The paper also analyzes the bit error rate (BER) performance of PNC, OPNC, and COPNC for Rayleigh fading model. Simulation results for Rayleigh and Nakagami‐<italic>m</italic> fading channels show that COPNC can provide outstanding BER performance compared with PNC and OPNC, especially when the uplink channel conditions are asymmetric. The results in Nakagami‐<italic>m</italic> channels also imply that COPNC will provide higher BER gain with more severe fading depth. Potential works about COPNC are also presented in this paper. Copyright © 2013 John Wiley &amp; Sons, Ltd.</p> </abstract>