Full-Duplex opportunistic relay selection in future spectrum-sharing networks

Mohammad Galal Khafagy, Mohamed-Slim Alouini, Sonia Aïssa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations


We propose and analyze the performance of full-duplex relay selection in primary/secondary spectrum-sharing networks. Contrary to half-duplex relaying, full-duplex relaying (FDR) enables simultaneous listening/forwarding at the secondary relay, thereby allowing for a higher spectral efficiency. However, since the source and relay simultaneously transmit in FDR, their superimposed signal at the primary receiver should now satisfy the existing interference constraint which can considerably limit the secondary network throughput. In this regard, relay selection can offer an adequate solution to boost the secondary throughput while satisfying the imposed interference limit. We first analyze the performance of opportunistic relay selection among a cluster of full-duplex decode-and-forward relays with self-interference by deriving the exact cumulative distribution function of its end-to-end signal-to-noise ratio. Second, we evaluate the end-to-end performance of relay selection with interference constraints due to the presence of a primary receiver. Finally, the presented exact theoretical findings are verified by numerical simulations.
Original languageEnglish (US)
Title of host publication2015 IEEE International Conference on Communication Workshop (ICCW)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781467363051
StatePublished - Jun 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01


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