Cognitive radio technology can significantly improve spectrum utilization efficiency via
enabling secondary users to access licensed spectrum dynamically without harmful …

The inherent scarcity of frequency spectrum, along with the fixed spectrum allocation
adopted policy, has led to a dire shortage of this indispensable resource. Furthermore, with …

In light of the increasing requirement for wireless communiqué services and the finite
amount of spectrum available, cognitive radio networks, or CRNs, have surfaced as a viable …

Cognitive radio technology is the vision of pervasive wireless communications that improves
the spectrum utilization and offers many social and individual benefits. The objective of the …

The objective of this special issue is to bring together the state-of-art research results,
designs, and industrial applications of cognitive radio (CR) networks and communications …

To overcome the current under-utilization of spectrum resources, the CR (Cognitive Radio)
paradigm has gained an increasing interest to perform the so-called Dynamic Spectrum …

Cognitive radio (CR) is a spectrum sharing technology that facilitates a hierarchal
coexistence between licensed and license-exempt users over licensed bands. One of the …

To cope up with drastically increasing demand for radio resources lead to raise a challenge
to the wireless community. The limited radio spectrum and fixed spectrum allocation strategy …

Cognitive radio (CR) is an emergent communication platform that offers solutions for
spectrum scarcity issues. Cognitive radio networks (CRNs) will offer increased bandwidth to …

Cognitive Radio (CR) has been offered as a possible option to increase connection, self-
adaptability, and spectrum efficiency. Cognitive radio is built on four key functionalities that …