Spectrum sensing using single-radio switched-beam antenna systems

Elpiniki Tsakalaki, David Wilcox, Elisabeth De Carvalho, Constantinos B. Papadias, Tharmalingam Ratnarajah

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

19 Citations (Scopus)

Abstract

The paper describes spectrum sensing using single-radio switched-beam arrays with reactance-loaded parasitic elements. At a given frequency, the antenna's loading conditions (reactive loads) are optimized for maximum average beamforming gain in the beampattern look direction. Circular permutations of the reactive loads rotate the narrowband beampattern to different angular positions dividing the whole space around the cognitive receiver into several angular subspaces. The beampattern directionality leverages the performance of spectrum sensing algorithms like the energy detection by enhancing the receive signal-to-noise ratio. Moreover, the selection combining across the weakly correlated beampatterns gives rise to a diversity action further boosting the probability of detection.
Original languageEnglish
Title of host publicationProceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications : CrownCom 2012
Number of pages6
PublisherIEEE
Publication date2012
Pages118-123
ISBN (Print)978-1-4673-2976-7
ISBN (Electronic)978-1-936968-55-8
DOIs
Publication statusPublished - 2012
Event7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom) - Stockholm, Sweden
Duration: 18 Jun 201222 Jun 2012

Conference

Conference7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom)
Country/TerritorySweden
CityStockholm
Period18/06/201222/06/2012

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