In this paper, the problem of dynamic spectrum sensing and aggregation is investigated in a
wireless network containing N correlated channels, where these channels are occupied or …

Cooperative routing and spectrum aggregation are two promising techniques for Cognitive
Radio Ad-Hoc Networks (CRAHNs). In this paper, we propose a spectrum aggregation …

In cognitive radio (CR) networks, spectrum resource that can be shared by secondary users
(SUs) is always restricted by primary users (PUs). Although channel aggregation (CA) …

We propose wide-band spectrum sensing scheduling solutions for cognitive radios that are
equipped with reconfigurable RF front-ends. The wide frequency spectrum of interest is …

In Cognitive Radio (CR) networks, it is common that the spectrum holes are too narrow to
support high-speed communications. Discontinuous Orthogonal Frequency Division …

The main processes of a cognitive radio system include spectrum sensing, spectrum
decision, spectrum sharing, and spectrum conversion. Experimental results show that these …

The Cognitive Radio Sensor Network (CRSN) is considered as a viable solution to enhance
various aspects of the electric power grid and to realize a smart grid. However, several …

Cognitive radio is one of the technologies promoting flexible and efficient use of radio
frequency spectrum, thus solving spectrum scarcity problem. Frequency assignment is an …

Spectrum aggregation provides a promising approach to improve the network capacity for
Cognitive Radio Ad-Hoc Networks (CRAHNs). Resource allocation for spectrum …

In cognitive radio networks, the available spectrum holes are usually discontinuous. Hence,
it is hard to exploit these spectrum holes because the bandwidth of an individual one may …