Dear Colleagues, 

The present Special Issue, "Wireless Powered Cognitive Radio Sensor Networks", approaches the problem of spectrum management and optimal resource allocation in the context of fast-growing data and resource demand, with a twofold aim: to explore current implementations of cognitive radio sensor networks; to address the issue of wireless power delivery to ensure their continuous and seamless working cycle. The role of cognitive radios is becoming more and more important, since they are able to access the frequency spectrum in an opportunistic manner, thus exploiting the always-true paradox of highly allocated but poorly exploited frequency resources. In detail, a cognitive radio sensor network can be seen in two different ways: (i) the sensor network gathers measurement data from the field regarding a quantity of interest and adopts a cognitive radio paradigm to deliver the acquired information to a datacenter or a centralized cloud infrastructure; (ii) the sensor network is composed of spectrum sensors—which are able to acquire signals transmitted by several technologies in frequencies typically ranging from 0 to 6 GHz—and the gathered information is used to populate geographic databases where cognitive users can find information about real-time occupancy and therefore exploit spectrum holes to deliver their own data. 

Both approaches to the topic are welcomed for submission to this Special Issue; additionally, we invite research on techniques related to efficient power delivery techniques which can keep sensor networks running for prolonged durations. The presented content should have a strong measurement impact and address open issues in the field of novel communication paradigms, in both industrial and environmentally friendly applications.

Prof. Dr. Luigi Ferrigno
Dr. Gianni Cerro
Guest Editors

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