Capacity Analysis of Dual-Hop Amplify-and-Forward MIMO Multiple-Access Channels
2012 (English)In: Wireless Communications & Signal Processing (WCSP), 2012 International Conference on, IEEE , 2012, 6542852- p.Conference paper (Refereed)
Relay channels have been heavily studied during the last decades as a means of improving spectral efficiency, availability and coverage in combination with multiple antenna transceivers. Relay channels can comprise many hops but the most practical approach at the time being would be a dual-hop system. In addition, the simplest method of relaying in terms of complexity is amplify and forward. In this direction, we investigate the ergodic capacity of a dual-hop amplify-and-forward MIMO MAC and we derive asymptotic closed-form expressions based on the principles of free probability theory. We extend the current literature by proposing a analytical model which can accommodate variance-profiled Gaussian matrices. Numerical results are utilized to verify the accuracy of the derived closed-form expressions and evaluate the effect of the channel parameters.
Place, publisher, year, edition, pages
IEEE , 2012. 6542852- p.
Amplify-and-forward, Capacity analysis, Channel parameter, Closed-form expression, Free-probability theory, Multiple access channels, Multiple-antenna transceivers, Spectral efficiencies
IdentifiersURN: urn:nbn:se:kth:diva-107585DOI: 10.1109/WCSP.2012.6542852ScopusID: 2-s2.0-84881046164ISBN: 978-146735829-3OAI: oai:DiVA.org:kth-107585DiVA: diva2:576776
2012 International Conference on Wireless Communications and Signal Processing, WCSP 2012; Huangshan; China; 25 October 2012 through 27 October 2012
FunderICT - The Next Generation
QC 201212182012-12-132012-12-132013-09-18Bibliographically approved