On combined beamforming and OSTBC over the cognitive radio S-channel with partial CSI
2012 (English)In: Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012, IEEE , 2012, 30-35 p.Conference paper (Refereed)
A pair of secondary (cognitive, unlicensed) users is communicating in the presence of multiple primary (licensed) user pairs. The cognitive transceiver is implementing beamforming and orthogonal space-time block coding in the presence of external interference, induced by the primary system transmission, that has to be properly handled. Moreover, the cognitive link nodes, both the transmitter and the receiver, are supplied with different levels of network side information (NSI), i.e. primary messages and partial channel side information (CSI). We investigate how this side information can be taken into account in the cognitive system design and how interference affects the behaviour of the beamforming solution. Through numerical simulations, we illustrate the impact of partial CSI on system performance and discuss its implications on the feasibility of cognitive systems.
Place, publisher, year, edition, pages
IEEE , 2012. 30-35 p.
Time Block-Codes, Systems
IdentifiersURN: urn:nbn:se:kth:diva-91914DOI: 10.4108/icst.crowncom.2012.248344ISI: 000310377900006ScopusID: 2-s2.0-84869386487ISBN: 978-1-936968-55-8OAI: oai:DiVA.org:kth-91914DiVA: diva2:511526
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Ntworks and Communications, CROWNCOM 2012; Stockholm; 18 June 2012 through 20 June 2012
FunderEU, FP7, Seventh Framework Programme, INFSO-ICT-248303 QUASARICT - The Next Generation
QC 201212182012-03-212012-03-212013-04-15Bibliographically approved