Spectrum sensing error optimisation in cognitive radio networks

B. A. Jayawickrama*, E. Dutkiewicz, G. Fang

*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

In this paper, we analyse the spectrum sensing error in cognitive radio networks that use energy detection to determine the presence of primary users. We present a theoretical framework to show the existence of a minimum in the spectrum sensing error for an optimally selected energy detection threshold. We apply our analysis to both cooperative and non-cooperative sensing network scenarios. In the cooperative configuration, we present upper and lower bounds for the optimum energy detection threshold and in the non-cooperative configuration, we present a closed form expression for the optimum energy detection threshold. We also investigate the sensitivity of the sensing error to the detection threshold at different PU signal levels. We validate our analysis against empirical data obtained from a cognitive radio testbed based on the Universal Software Radio Peripheral hardware platform.

Original languageEnglish
Title of host publication2012 International Symposium on Communications and Information Technologies, ISCIT 2012
Place of PublicationPiscataway, N.J.
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages787-792
Number of pages6
ISBN (Print)9781467311571
DOIs
Publication statusPublished - 2012
Event2012 International Symposium on Communications and Information Technologies, ISCIT 2012 - Gold Coast, QLD, Australia
Duration: 2 Oct 20125 Oct 2012

Other

Other2012 International Symposium on Communications and Information Technologies, ISCIT 2012
CountryAustralia
CityGold Coast, QLD
Period2/10/125/10/12

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  • Cite this

    Jayawickrama, B. A., Dutkiewicz, E., & Fang, G. (2012). Spectrum sensing error optimisation in cognitive radio networks. In 2012 International Symposium on Communications and Information Technologies, ISCIT 2012 (pp. 787-792). [6381009] Piscataway, N.J.: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ISCIT.2012.6381009