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On the asymptotic sum-rate of the relay-assisted amplify-and-forward cognitive MIMO channel
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Kommunikationsteori, Communication Theory)
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Kommunikationsteori, Communication Theory)
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Kommunikationsteori, Communication Theory)ORCID iD: 0000-0001-7182-9543
2012 (English)In: Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on, IEEE , 2012, 709-714 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper studies the asymptotic sum-rate of the primary network within the relay-assisted multi-antenna cognitive radio system performing amplify-and-forward relaying. The achievable sum-rates are derived in the large-system limit by means of the replica method. A closed-form expression for the sum-rate of the primary network is obtained for large antenna arrays as a function of parameters obtained by solving a set of fixed-point equations. Numerical simulations confirm the validity of the results even for systems with only a few antennas at each terminal.

Place, publisher, year, edition, pages
IEEE , 2012. 709-714 p.
Series
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, ISSN 2166-9570
Keyword [en]
Amplify-and-forward, Amplify-and-forward relaying, Closed-form expression, Fixed point equation, MIMO channel, Multi-antenna, Replica method, Sum-rate
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-103747DOI: 10.1109/PIMRC.2012.6362876ISI: 000312809400121Scopus ID: 2-s2.0-84871952681ISBN: 978-146732569-1 (print)OAI: oai:DiVA.org:kth-103747DiVA: diva2:561607
Conference
2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012; Sydney, NSW;9 September 2012 through 12 September 2012
Funder
Swedish Research CouncilICT - The Next Generation
Note

QC 20121219

Available from: 2012-10-19 Created: 2012-10-19 Last updated: 2013-04-19Bibliographically approved

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Rasmussen, Lars

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