Performance analysis of amplify-and-forward two-way relaying with co-channel interference and channel estimation error

Liang Yang, Khalid Qaraqe, Erchin Serpedin, Mohamed Slim Alouini

Research output: Contribution to journalArticle

47 Citations (Scopus)


In this paper, we consider the performance of a two-way amplify-and-forward relaying network (AF TWRN) in the presence of unequal power co-channel interferers (CCI). Specifically, we first consider AF TWRN with an interferencelimited relay and two noisy-nodes with channel estimation errors and CCI. We derive the approximate signal-to-interference plus noise ratio expressions and then use them to evaluate the outage probability, error probability, and achievable rate. Subsequently, to investigate the joint effects of the channel estimation error and CCI on the system performance, we extend our analysis to a multiple-relay network and derive several asymptotic performance expressions. For comparison purposes, we also provide the analysis for the relay selection scheme under the total power constraint at the relays. For AF TWRN with channel estimation error and CCI, numerical results show that the performance of the relay selection scheme is not always better than that of the all-relay participating case. In particular, the relay selection scheme can improve the system performance in the case of high power levels at the sources and small powers at the relays.

Original languageEnglish
Article number6493988
Pages (from-to)2221-2231
Number of pages11
JournalIEEE Transactions on Communications
Issue number6
Publication statusPublished - Jun 2013



  • Amplify-and-forward
  • Channel estimation error
  • Co-channel interference
  • Relay selection
  • Two-way relaying

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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