Analysis of primary user duty cycle impact on spectrum sensing performance

Chang, Kevin, Huang, Yu Chieh, & Senadji, Bouchra (2010) Analysis of primary user duty cycle impact on spectrum sensing performance. In 2010 International Symposium on Information Theory and its Applications and 2010 International Symposium on Spread Spectrum Techniques and Applications (ISITA2010/ISSSTA2010), 17-20 October 2010, Taichung, Taiwan.

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Spectrum sensing is considered to be one of the most important tasks in cognitive radio. Many sensing detectors have been proposed in the literature, with the common assumption that the primary user is either fully present or completely absent within the window of observation. In reality, there are scenarios where the primary user signal only occupies a fraction of the observed window. This paper aims to analyse the effect of the primary user duty cycle on spectrum sensing performance through the analysis of a few common detectors. Simulations show that the probability of detection degrades severely with reduced duty cycle regardless of the detection method. Furthermore we show that reducing the duty cycle has a greater degradation on performance than lowering the signal strength.

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8 citations in Scopus
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ID Code: 34338
Item Type: Conference Paper
Refereed: No
Keywords: cognitive radio, sensing detectors, primary user duty cycle, spectrum sensing performance
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 Please consult the authors.
Deposited On: 06 Sep 2010 06:24
Last Modified: 29 Feb 2012 14:24

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