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Outage Probability of Joint Relay Selection and Power Allocation for Two-Way Relay Networks over Rayleigh Fading Channels

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4 Author(s)
Zheng Ren ; Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China ; Yongyu Chang ; Yongliang Zhang ; Dacheng Yang

This paper investigates the outage probability of joint relay selection and power allocation for two- way relay networks over Rayleigh Fading channels. Firstly, a tight lower bound of outage probability with equal power allocation is derived. Furthermore, a joint relay selection and optimum power allocation scheme is proposed, which minimizes the outage probability, then, a lower bound of outage probability is also obtained. Based-on the closed-form outage probabilities, we obtain a relay selection strategy, which requires only a single integer parameter to be broadcasted to all relays. The analysis is verified by using Monte-Carlo simulations.

Published in:

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Date of Conference:

6-9 May 2012