Energy-Efficient Spectrum Sensing and Transmission for Cognitive Radio System
Yuan Wu, Danny H. K. Tsang · IEEE Communications Letters · 2011
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.