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Analysis of primary user duty cycle impact on spectrum sensing performance

By Kevin Chang, Yu Chieh Huang and Bouchra Senadji


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

Topics: 090600 ELECTRICAL AND ELECTRONIC ENGINEERING, cognitive radio, sensing detectors, primary user duty cycle, spectrum sensing performance
Year: 2010
DOI identifier: 10.1109/isita.2010.5649546
OAI identifier:

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