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Novel approaches to determine the optimal operating point of spectrum sensing in overlay spectrum sharing

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Publication date2010
Host publication2010 IEEE 72nd Vehicular Technology Conference Fall
Place of PublicationNew York
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)9781424435746
ISBN (Print)9781424435739
Original languageEnglish
EventIEEE 72nd Vehicular Technology Conference Fall 2010 - Ottawa, Canada
Duration: 6/09/20109/09/2010

Conference

ConferenceIEEE 72nd Vehicular Technology Conference Fall 2010
CountryCanada
Period6/09/109/09/10

Publication series

NameIEEE VTS Vehicular Technology Conference Proceedings
PublisherIEEE
ISSN (Print)1090-3038

Conference

ConferenceIEEE 72nd Vehicular Technology Conference Fall 2010
CountryCanada
Period6/09/109/09/10

Abstract

In this paper we propose a novel approach to obtain the optimal operating point of the spectrum sensing in overlay spectrum sharing. The operating point of the spectrum sensing is specified by the receiver operating characteristic (ROC) curve which is a fundamental spectrum sensing behavior that relates its false alarm and missed detection probabilities. Our objective is to maximize the ergodic capacity of the secondary service in the presence of inaccurate spectrum sensing. We formulate an optimization problem to obtain the optimal transmission power strategy and ROC operating point of the spectrum sensing. Constraints of the considered optimization problem include the secondary service maximum transmission power as well as the maximum primary service collision probability. Two iterative sub-optimal schemes are then proposed to find the solutions of the optimization problem. Numerical results show that both proposed schemes quickly converge after a few iterations. Moreover, it is observed that the proposed schemes significantly outperform other conventional approaches.