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On the optimal relay design for multi-antenna cognitive two-way AF relay networks
KTH, School of Electrical Engineering (EES), Communication Theory.
2015 (English)In: Conference Record: Asilomar Conference on Signals, Systems and Computers, 2015, Vol. 2015-April, 1579-1583 p.Conference paper (Refereed)
Abstract [en]

Cognitive relaying is an efficient method for tackling the problem of spectrum scarcity by serving new (secondary) users, while keeping the existing (primary) users satisfied with their service. Moreover, additional gains can be attained from employment of the two-way relaying with multiple-antenna relays within the secondary network. In this paper, we consider an underlay two-way cognitive network and propose an efficient algorithm for computing a (nearly) optimal relay precoder matrix subject to the interference constraint towards the primary network. The efficiency of the proposed solution is highlighted by means of numerical simulations.

Place, publisher, year, edition, pages
2015. Vol. 2015-April, 1579-1583 p.
Keyword [en]
Algorithms, AF relay networks, Cognitive network, Interference constraints; Multi antennas; Multiple-antenna relay
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-174648DOI: 10.1109/ACSSC.2014.7094731ScopusID: 2-s2.0-84940499258ISBN: 978-147998297-4OAI: diva2:875520
48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 ; Conference Date: 2 November 2014 Through 5 November 2014

QC 20151201

Available from: 2015-12-01 Created: 2015-10-07 Last updated: 2015-12-01Bibliographically approved

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Girnyk, Maksym
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