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Outage Probability of Switch and Stay Combining in Two-Way Amplify-and-Forward Relay Networks

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5 Author(s)
Mao Yan ; Southwest Jiaotong Univ., Chengdu, China ; Qingchun Chen ; Xianfu Lei ; Duong, T.Q.
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In this letter, a switch-and-stay combining (SSC) in two-way amplify-and-forward (AF) networks with two relays is proposed and analyzed. In particular, the closed-form expression of the outage probability for the proposed scheme over Rayleigh fading channels is derived. Asymptotic performance analysis for high signal-to-noise ratio (SNR) is also presented. It is shown that the SSC scheme is capable of realizing full diversity order, and even achieving the same outage performance as the best-relay selection (BRS), when reasonable switching thresholds are set. Simulations are provided to corroborate the theoretical analysis.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 4 )