A two-stage sensing technique for dynamic spectrum access
IEEE Transactions on Wireless Communications
History of communications: carrier-wave telephony over power lines: early history
IEEE Communications Magazine
Ethernet passive optical network (EPON): building a next-generation optical access network
IEEE Communications Magazine
Emerging cognitive radio applications: A survey
IEEE Communications Magazine
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Cognitive radio based hierarchical communications infrastructure for smart grid
IEEE Network: The Magazine of Global Internetworking
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To meet the increasing challenges on global warming and customer demands, the current hierarchical structure of electric power grid is undergoing a rapid change by focusing on high efficiency, reliability and flexibility. To address such challenges, the new concept of smart grid with a sophisticated communication infrastructure has emerged. While power grid systems are based on traditional information architectures at present, the evolving smart grid has a strong need on communication connections among a huge amount of distributed elements, such as generators, substations, monitoring sensors and customers. However, the power industry is facing dilemma that communication resources are limited due to the lack of wireless spectrum resources and the restrictions of wired applications. This paper firstly provides the architecture of the wide-area monitoring system for smart grid by applying a spectrum sensing and sharing technique of cognitive radio, based on an overview of the current communication technologies. Afterwards, the paper presents the feasible application of cognitive communication architecture on the existing power quality monitoring system by combining long-term and short-term monitoring approaches.