Energy-Efficient Cooperative Spectrum Sensing with QoS Guarantee in Cognitive Radio Networks

Hang HU  Youyun XU  Ning LI  

IEICE TRANSACTIONS on Communications   Vol.E96-B    No.5    pp.1222-1225
Publication Date: 2013/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.1222
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
cooperative spectrum sensing,  soft information fusion,  hard information fusion,  QoS guarantee,  

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A novel and energy-efficient algorithm with Quality-of-Service (QoS) guarantee is proposed for cooperative spectrum sensing (CSS) with soft information fusion and hard information fusion. By weighting the sensing performance and the consumption of system resources in a utility function that is maximized with respect to the number of secondary users (SUs), it is shown that the optimal number of SUs is related to the price of these QoS requirements.