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Relay Selection with Imperfect CSI in Bidirectional Cooperative Networks

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4 Author(s)
Taghiyar, M.J. ; Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada ; Muhaidat, S. ; Jie Liang ; Dianati, M.

We study the performance of bidirectional multi-relay cooperative networks in the presence of imperfect channel state information by means of the correlation coefficient of the estimated channel gains and their actual values, where the max-min relay selection is used. We show that the performance is determined by the average performance of the two links and neither of them dominates it individually. We also present a power allocation scheme that minimizes the outage probability.

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Communications Letters, IEEE  (Volume:16 ,  Issue: 1 )