Outage Analysis of Dual-Hop Relaying Communications with Co-channel Interference over Nakagami-m Fading Channels

Kostas PEPPAS  Christos DATSIKAS  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.8   pp.2414-2418
Publication Date: 2011/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2414
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
co-channel interference,  dual-hop relaying,  Nakagami-m fading,  outage probability,  power allocation,  

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In this letter, a study on the end-to-end outage performance of dual-hop non-regenerative relaying in the presence of co-channel interference is presented. We assume that both the desired and the interfering signals are subjected to Nakagami-m fading. Exact analytical expressions, as well as tight lower bounds of the end-to-end outage probability, are derived. An asymptotic expression for the outage probability at high values of Signal-to-Interference Ratio is also presented. Furthermore, we also propose the optimal power allocation for high values of Signal-to-Interference Ratio. Extensive numerically evaluation and computer simulation results are presented to verify the validity and the accuracy of the proposed analysis.