Cognitive radio (CR) technology is envisaged to solve the problems in wireless networks
resulting from the limited available spectrum and the inefficiency in the spectrum usage by …

The problem of spectrum scarcity and inefficiency in spectrum usage will be addressed by
the newly emerging cognitive radio paradigm that allows radios to opportunistically transmit …

Cognitive radio networks will provide high bandwidth to mobile users via heterogeneous
wireless architectures and dynamic spectrum access techniques. However, CR networks …

Cognitive radio (CR) technology enables the opportunistic use of the portions of the licensed
spectrum by the CR users, while ensuring low interference to the primary user (PU) activity …

Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access:
the policy that addresses the spectrum scarcity problem that is encountered in many …

Cognitive radio (CR) is an enabling technology to allow unlicensed (secondary) users to
exploit the spectrum allocated to licensed (primary) users in an opportunistic manner. CR is …

Cognitive radio ad hoc networks (CRAHNs) constitute a viable solution to solve the current
problems of inefficiency in the spectrum allocation, and to deploy highly reconfigurable and …

With the rapid deployment of new wireless devices and applications, the last decade has
witnessed a growing demand for wireless radio spectrum. However, the fixed spectrum …

Cognitive radio networks hold the key to achieving better radio bandwidth utilization and
improving the quality of wireless applications. The next step in this fast emerging paradigm …

The Cognitive Radio and the Cognitive Radio Networks have recently become one of the
most intensively studied paradigms in wireless communications. The main distinctive …