Cognitive radio technology has the potential to address the shortage of available radio
spectrum by enabling dynamic spectrum access. Since its introduction, researchers have …

Due to the under-utilization problem of the allocated radio spectrum, cognitive radio (CR)
communications have recently emerged as a reliable and effective solution. Among various …

Cognitive radio has emerged as one of the most promising candidate solutions to improve
spectrum utilization in next generation cellular networks. A crucial requirement for future …

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)-based Internet of Things (IoT) system is an effective step toward a
world of smart technology. Many frameworks have been proposed to build CR-based IoT …

Spectrum sensing is a key function of cognitive radio to prevent the harmful interference with
licensed users and identify the available spectrum for improving the spectrum's utilization …

In cognitive radio systems, the ability to accurately detect primary user's signal is essential to
secondary user in order to utilize idle licensed spectrum. Conventional energy detector is a …

The ever-increasing demand for higher data rates in wireless communications in the face of
limited or underutilized spectral resources has motivated the introduction of cognitive radio …

Cognitive radio is widely expected to be the next Big Bang in wireless communications.
Spectrum sensing, that is, detecting the presence of the primary users in a licensed …

A cooperative approach to the sensing task of wireless cognitive radio (CR) networks is
introduced based on a basis expansion model of the power spectral density (PSD) map in …