Performance analysis of switch-and-stay combining in two-way relay systems with analog network coding and time-division broadcast protocols

Xianfu Lei, Rose Qingyang Hu, Lisheng Fan, Pingzhi Fan, X. Wang, Trung Q. Duong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, weconsider switch-and-stay combining (SSC) in two-way relay systems with two amplify-and-forward relays, one of which is activated to assist the information exchange between the two sources. The system operates in either analog network coding (ANC) protocol where the communication is only achieved with the help of the active relay or timedivision broadcast (TDBC) protocol where the direct link between two sources can be utilized to exploit more diversity gain. In both cases, we study the outage probability and bit error rate (BER) for Rayleigh fading channels. In particular, we derive closed-form lower bounds for the outage probability and the average BER, which remain tight for different fading conditions. We also present asymptotic analysis for both the outage probability and the average BER at high signalto-noise ratio. It is shown that SSC can achieve the full diversity order in two-way relay systems for both ANC and TDBC protocols with proper switching thresholds. Copyright © 2014 John Wiley & Sons, Ltd.
Original languageEnglish
Number of pages19
JournalWireless Communications and Mobile Computing
Early online date06 Nov 2014
DOIs
Publication statusPublished - Nov 2014

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