Abstract—Cognitive radio technology has drawn much attention since it is a promising
candidate to efficiently utilize the scarce radio resources. However, cognitive radio …

Cognitive radio networks hold the key to achieving better radio bandwidth utilization and
improving the quality of wireless applications. In this paper we design a scenario for …

Cognitive radio ad hoc networks (CRAHNs) were developed to improve the utilization ratio
of licensed spectrum. Since spectrum opportunities for users are varied over time and …

Cognitive Radio (CR) technology has been introduced to solve the problems of spectrum
underutilization and spectrum scarcity caused by improper spectrum management policies …

Routing is one of the most important issues in multihop ad hoc networks. In the routing for
mobile cognitive radio (CR) networks, the constraints on residual energy of each user and …

Cognitive radio ad hoc networks (CRAHNs) are multi-hop, dynamic and self-configurable
networks, which can communicate without any infrastructure support. Most of the research in …

Cognitive radio has recently emerged as a promising technology to promote the utilization
efficiency of the existing radio spectrums allocation. In cognitive radio ad hoc networks …

Cognitive radio networks (CRNs) have emerged as a paradigm addressing the problem of
limited spectrum availability and the spectrum underutilization in wireless networks by …

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 …

Cognitive radio networks improve spectrum utilization by‎ sharing licensed spectrum with
cognitive radio devices. In‎ cognitive radio ad hoc networks the routing protocol is one‎ of the …