The cognitive radio (CR) paradigm for designing next‐generation wireless communications
systems is becoming increasingly popular, and different aspects of it are being implemented …

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 …

The year 2009 marked the 10th anniversary of Mitola and Maguire Jr. introducing the
concept of cognitive radio. This prompted an outpouring of research work related to CR …

Due to the increasing demand for new wireless services and applications as well as the
increasing number of wireless users, the available spectrum is becoming increasingly …

This article provides a comprehensive survey of cognitive radio technology, focusing on its
application to dynamic spectrum access, especially from the perspective of realizing …

Cognitive radio (CR) has been considered as a potential candidate for addressing the
spectrum scarcity problem of future wireless networks. Since its conception, several …

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

Currently, the radio spectrum is statically allocated and divided between licensed and
unlicensed frequencies. Due to this inflexible policy, some frequency bands are growing in …

Under utilization of radio spectrum in traditional wireless communication systems [30], along
with the increasing spectrum demand from emerging wireless applications, is driving the …

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 …