NDLI: An empirical study on the performance of a spectrum sensing scheme for cognitive radio

Content Provider	IEEE Xplore Digital Library
Author	Barela, Mary Claire Marciano, Joel S.
Copyright Year	2014
Description	Author affiliation: Wireless Communications Engineering Laboratory, Electrical and Electronics Engineering Institute, University of the Philippines - Diliman, Philippines (Barela, Mary Claire; Marciano, Joel S.)
Abstract	This paper describes the implementation and the experimental performance of a spectrum sensing scheme, based on a Constant False Alarm Rate (CFAR) algorithm, for cognitive radio in TV white space (TVWS) operation. We use various signal profiles, representing an incumbent or primary user (PU) in the channel, along with a physical testbed to experimentally measure the detection of a PU signal over the following parameters: (1) sample size or frequency resolution, (2) noise estimate and (3) time variability (“burstiness” or “duty cycle”) of the PU signal, including using actual IEEE802.11 packets for the primary user. The measured results validate the behavior of the CFAR energy detector scheme on the number of samples and noise value estimate used. We also note that the accuracy of the spectrum sensing scheme, which depends on the signal energy exceeding a threshold according to the CFAR algorithm, degrades at smaller duty cycles of the PU for a given detection window duration and resolution bandwidth.
Starting Page	474
Ending Page	479
File Size	897651
Page Count	6
File Format	PDF
ISBN	9789860334074
ISSN	18825621
DOI	10.1109/WPMC.2014.7014865
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-07
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	National Institute of Information and Communicatio
Subject Keyword	IEEE 802.11 Standards Spectrum sensing Energy detection Noise Cognitive radio testbed TV white space Detectors Bandwidth Cognitive radio
Content Type	Text
Resource Type	Article

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