Title :
Energy-Efficient Spectrum Sensing and Transmission for Cognitive Radio System
Author :
Wu, Yuan ; Tsang, Danny H K
Author_Institution :
Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China
fDate :
5/1/2011 12:00:00 AM
Abstract :
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.
Keywords :
cognitive radio; power consumption; cognitive radio system; energy consumption; energy-efficient spectrum sensing; optimal sensing; power consumption components; transmission durations; Cognitive radio; Energy consumption; Power demand; Sensors; Signal to noise ratio; Wireless sensor networks; Cognitive radio; energy efficiency; spectrum sensing and transmission;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.032811.110102
