Radio frequency (RF) energy transfer and harvesting techniques have recently become
alternative methods to power the next-generation wireless networks. As this emerging …

Wireless sensor networks (WSNs) use the unlicensed industrial, scientific, and medical
(ISM) band for transmissions. However, with the increasing usage and demand of these …

A cognitive radio wireless sensor network is one of the candidate areas where cognitive
techniques can be used for opportunistic spectrum access. Research in this area is still in its …

Wireless sensor networks (WSNs) consist of autonomous and resource-limited devices. The
devices cooperate to monitor one or more physical phenomena within an area of interest …

We consider a cognitive radio network with an energy-harvesting secondary transmitter to
improve both energy efficiency and spectral efficiency. The goal of this paper is to determine …

Spectrum efficiency and energy efficiency are two critical issues in designing wireless
networks. Through dynamic spectrum access, cognitive radios can improve the spectrum …

A green-energy-powered cognitive radio (CR) network is capable of liberating the wireless
access networks from spectral and energy constraints. The limitation of the spectrum is …

Wireless energy harvesting is regarded as a promising energy supply alternative for energy-
constrained wireless networks. In this paper, a new wireless energy harvesting protocol is …

Spectrum sensing is one of the essential tasks to have a cognitive radio system, which will
allow an unlicensed user, called secondary user, to utilize the spectrum while the licensed …

In recent years, the excessive energy consumption in wireless communication systems has
been increasingly critical, and environmental and financial considerations have motivated a …