Cognitive radio has become a promising technology in recent times as it facilitates the
opportunistic use of the frequency spectrum, a precious resource in the communications …

Cognitive radio (CR) technology is introduced to solve the problem of spectrum under-
utilization in wireless networks by opportunistically exploiting portions of the spectrum …

Cognitive radio ad hoc networks (CRAHNs) are a class of cognitive radio networks. In recent
years, they have gained popularity, and routing protocols have been proposed. Above all …

Cognitive radio (CR) technology enables the opportunistic use of the vacant licensed
frequency bands, thereby improving the spectrum utilization. However, the CR operation …

Routing in cognitive radio ad hoc networks (CRAHNs) is a daunting task owing to dynamic
topology, intermittent connectivity, spectrum heterogeneity, and energy constraints. Other …

Cognitive radio (CR) is viewed as the empowering innovation of the dynamic spectrum
access (DSA) model which is imagined to take care of the present spectrum scarcity issue by …

Advancement of Cognitive Radio technology can remedy the problems encountered from
bandwidth and spectrum access limitations. In Cognitive Radio Ad Hoc Networks routing is …

Ad hoc network is a collection of wireless mobile nodes that dynamically form a temporary
network without the use of any existing network infrastructure or centralized administration. A …

Cognitive radio ad hoc networks (CRAHNs) are active, self-organized, and dynamic
networks, in which cognitive users can communicate with each other in an ad hoc fashion …

Ad-hoc routing protocols with cognitive capabilities have been proposed which solves the
problem of spectrum scarcity. It does it by intelligently allowing the unlicensed devices to …