Physical‐layer network coding with multi‐antenna transceivers in interference limited environments. Issue 4 (1st March 2016)

• Record Type: Journal Article
• Authors: Phan, Hoc; Zheng, Fu‐Chun; Chu, Thi My Chinh
• Is Part Of: IET communications. Volume 10:Issue 4(2016)
• Page Start: 363
• Page End: 371
• Publication Date: 2016-03-01
• Subjects: network coding -- radio transceivers -- relay networks (telecommunication) -- amplify and forward communication -- array signal processing -- cochannel interference -- antenna arrays -- resource allocation -- channel capacity; physical layer network coding -- multiantenna transceivers -- interference limited environments -- beamforming amplify‐and‐forward networks -- two‐way relay networks -- cochannel interference -- multiple surrounding terminals -- associated power allocation -- two‐way communications -- symbol error rate -- ergodic channel capacity -- signal‐to‐noise ratio -- asymptotic outage probability -- power constraint; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2015.0299
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : In this study, the authors first analyse system performance of beamforming amplify‐and‐forward two‐way relay networks with physical‐layer network coding under the impact of co‐channel interference from multiple surrounding terminals and then propose the associated power allocation strategies. The performance of the two‐way communications in terms of outage probability, symbol error rate (SER), and total ergodic channel capacity of the system is quantified. Asymptotic performance analysis for sufficiently high signal‐to‐noise ratio is also provided to obtain further valuable insights into system designs. Based on the analysis, power allocation strategies to minimise the asymptotic outage probability and SER as well as to maximise the ergodic channel capacity under the total power constraint are developed. The numerical results show that the proposed power allocation approaches outperform equal power allocation given the same total power budget and other system parameters.