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 …

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 …

Abstract The Spectrum Channel Noise is a pseudorandom or random computational
process in a manner that allows the security competence of the available spectrum …

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 …

With the rapid proliferation of new technologies and services in the wireless domain,
spectrum scarcity has become a major concern. The allocation of the Industrial, Medical and …

Wireless networks with their ubiquitous applications have become an indispensable part of
our daily lives. Wireless networks demand more and more spectral resources to support the …

Internet of things (IoT) paradigm poses new challenges to the communication technology as
numerous heterogeneous objects will need to be connected. To address these issues new …

Dynamic spectrum policies combined with software defined radio are powerful means to
improve the overall spectral efficiency allowing the development of new wireless services …

This paper provides an overview of cognitive radio (CR) networks, with focus on the recent
advances in resource allocation techniques and the CR networks architectural design. The …

In cognitive radio (CR) networks, identifying the available spectrum resource through
spectrum sensing, deciding on the optimal sensing and transmission times, and …