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Virtual full-duplex buffer-aided relaying - Relay selection and beamforming
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-3599-5584
2013 (English)In: 2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), IEEE , 2013, 1748-1752 p.Conference paper (Refereed)
Abstract [en]

In this paper, we study virtual full-duplex (FD) buffer-aided relaying to recover the multiplexing loss of half-duplex (HD) relaying in a network with multiple buffer-aided relays, each of which has multiple antennas, through opportunistic relay selection and beamforming. The main idea of virtual FD buffer-aided relaying is that a source and a relay simultaneously transmit their own information to another relay and a destination, respectively. In this network, inter-relay interference (IRI) is a crucial problem which has to be resolved like self-interference in the FD relaying. In contrast to previous work that neglected the IRI, we propose two buffer-aided relay selection and beam-forming schemes taking the IRI into consideration. Numerical results show that our proposed relay selection scheme with zero-forcing beamforming (ZFB)-based IRI cancellation approaches the average end-to-end capacity of IRI-free upper bound as the numbers of relays and antennas increase.

Place, publisher, year, edition, pages
IEEE , 2013. 1748-1752 p.
Keyword [en]
Full-duplex, buffer-aided relaying, inter-relay interference, relay selection, beamforming
National Category
URN: urn:nbn:se:kth:diva-136424DOI: 10.1109/PIMRC.2013.6666425ScopusID: 2-s2.0-84893325797ISBN: 978-1-4673-6235-1OAI: diva2:676057
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013; London; United Kingdom; 8 September 2013 through 11 September 2013

QC 20131318

Available from: 2013-12-05 Created: 2013-12-05 Last updated: 2014-04-09Bibliographically approved

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Kim, Su MinBengtsson, Mats
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Signal ProcessingACCESS Linnaeus Centre

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