Location-based resource allocation for OFDMA cognitive radio systems

Haewoon Nam, Mahdi Ben Ghorbel, Mohamed-Slim Alouini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

In cognitive radio systems, in order for the secondary users to opportunistically share the spectrum without interfering the primary users, an accurate spectrum measurement and a precise estimation of the interference at the primary users are necessary but are challenging tasks. Since it is impractical in cognitive radio systems to assume that the channel state information of the interference link is available at the cognitive transmitter, the interference at the primary users is hard to be estimated accurately. This paper introduces a resource allocation algorithm for OFDMA-based cognitive radio systems, which utilizes location information of the primary and secondary users instead of the channel state information of the interference link. Simulation results show that it is indeed effective to incorporate location information into resource allocation so that a near-optimal capacity is achieved.
Original languageEnglish (US)
Title of host publicationProceedings of the 5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications
PublisherEuropean Alliance for Innovation n.o.
ISBN (Print)9781424458868
DOIs
StatePublished - 2010

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