On the asymptotic sum-rate of the relay-assisted amplify-and-forward cognitive MIMO channel
2012 (English)In: Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on, IEEE , 2012, 709-714 p.Conference paper (Refereed)
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.
, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, ISSN 2166-9570
Amplify-and-forward, Amplify-and-forward relaying, Closed-form expression, Fixed point equation, MIMO channel, Multi-antenna, Replica method, Sum-rate
IdentifiersURN: urn:nbn:se:kth:diva-103747DOI: 10.1109/PIMRC.2012.6362876ISI: 000312809400121ScopusID: 2-s2.0-84871952681ISBN: 978-146732569-1OAI: oai:DiVA.org:kth-103747DiVA: diva2:561607
2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012; Sydney, NSW;9 September 2012 through 12 September 2012
FunderSwedish Research CouncilICT - The Next Generation
QC 201212192012-10-192012-10-192013-04-19Bibliographically approved