Spectrum sensing optimisation for dynamic primary user signal

Chang, Kevin & Senadji, Bouchra (2012) Spectrum sensing optimisation for dynamic primary user signal. IEEE Transactions on Communications, 60(12), pp. 3632-3640.

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We propose a multi-layer spectrum sensing optimisation algorithm to maximise sensing efficiency by computing the optimal sensing and transmission durations for a fast changing, dynamic primary user. Dynamic primary user traffic is modelled as a random process, where the primary user changes states during both the sensing period and transmission period to reflect a more realistic scenario. Furthermore, we formulate joint constraints to correctly reflect interference to the primary user and lost opportunity of the secondary user during the transmission period. Finally, we implement a novel duty cycle based detector that is optimised with respect to PU traffic to accurately detect primary user activity during the sensing period. Simulation results show that unlike currently used detection models, the proposed algorithm can jointly optimise the sensing and transmission durations to simultaneously satisfy the optimisation constraints for the considered primary user traffic.

Impact and interest:

10 citations in Scopus
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8 citations in Web of Science®

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75 since deposited on 08 May 2013
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ID Code: 59802
Item Type: Journal Article
Refereed: Yes
Keywords: radio spectrum management;random processes;signal detection;telecommunication traffic;duty cycle based detector;dynamic primary user signal;dynamic primary user traffic;multilayer spectrum sensing optimisation;optimal sensing;optimisation constraint;rando
DOI: 10.1109/TCOMM.2012.091712.110856
ISSN: 0090-6778
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 IEEE
Copyright Statement: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible
Deposited On: 08 May 2013 21:56
Last Modified: 24 Aug 2016 21:51

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