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In today's world, we rely on the wireless radio technologies for a wide range of services. However, wireless spectrum that delivers these technologies is a limited commodity, hence efficient spectrum utilization is an issue that has been inviting a lot of interest and research in recent times. Spectrum sensing is a key step towards efficient spectrum usage. Energy detection is a fast and simple method...
Partial discharge (PD) is one of the predominant factors to be controlled to ensure reliability and undisrupted functions of power generators, motors, Gas Insulated Switchgear (GIS) and grid connected power distribution equipment, especially in the future smart grid. The emergence of wireless technology has provided numerous opportunities to optimise remote monitoring and control facilities that can...
Cognitive radio (CR) is a critical issue to solve the spectrum scarcity and to improve frequency spectrum utilization in wireless communication. Spectrum sensing is the first step for cognitive radio and it needs to detect signals presence under strict requirement such that secondary users (unlicensed users) can use the licensed spectral band without interfering primary users (licensed users). In...
Cognitive radios is emerging as a promising wireless paradigm, which will integrate benefits of software defined radio with a complete aware communication behavior. By detecting environments in real time and extracting interference characteristic in frequency spectrum, it can use flexible spectrum assign strategy for adaptive communications. To reach this goal many issues remain still open, such as...
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