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Opportunistic Network Decoupling with Virtual Full-Duplex Operation in Multi-Source Interfering Relay Networks
KTH, School of Electrical Engineering (EES), Automatic Control.
2017 (English)In: IEEE Transactions on Mobile Computing, ISSN 1536-1233, E-ISSN 1558-0660, Vol. 16, no 8, p. 2321-2333Article in journal (Refereed) Published
Abstract [en]

We introduce a new achievability scheme, termed opportunistic network decoupling (OND), operating in virtual full-duplex mode. In the scheme, a novel relay scheduling strategy is utilized in the K x N x K channel with interfering relays, consisting of K source-destination pairs and N half-duplex relays in-between them. A subset of relays using alternate relaying is opportunistically selected in terms of producing the minimum total interference level, thereby resulting in network decoupling. As our main result, it is shown that under a certain relay scaling condition, the OND protocol achieves K degrees of freedom even in the presence of interfering links among relays. Numerical evaluation is also shown to validate the performance of the proposed OND. Our protocol basically operates in a fully distributed fashion along with local channel state information, thereby resulting in relatively easy implementation.

Place, publisher, year, edition, pages
IEEE Computer Society, 2017. Vol. 16, no 8, p. 2321-2333
Keyword [en]
Degrees of freedom (DoF), half-duplex, interference, K x N x K channel, opportunistic network decoupling (OND), relay, virtual full-duplex (FD)
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:kth:diva-211326DOI: 10.1109/TMC.2016.2614979ISI: 000405069600018OAI: oai:DiVA.org:kth-211326DiVA, id: diva2:1129118
Note

QC 20170801

Available from: 2017-08-01 Created: 2017-08-01 Last updated: 2018-01-13Bibliographically approved

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