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Energy-Efficient Spectrum Sensing and Transmission for Cognitive Radio System

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2 Author(s)
Yuan Wu ; Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China ; Tsang, D.H.K.

We study energy-efficient spectrum sensing and transmission for Cognitive Radio (CR) which jointly determines its sensing and transmission durations. Our results quantify the impact of different power consumption components (i.e., sensing, transmission, and idling) on SU's optimal sensing and transmission durations. Our results also show that with a limited power capacity, SU has to strike a balance in energy consumption between sensing and transmission via appropriate idling.

Published in:

Communications Letters, IEEE  (Volume:15 ,  Issue: 5 )

Date of Publication:

May 2011

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