Fixed channel allocation technique, used in traditional wireless network implies to assign
planned set of frequency channels to each node of the network. Alternately, Cognitive Radio …

The cognitive radio (CR) nodes in a cognitive radio network (CRN) do not have license to
use specific spectrum band. Instead, they use the spectrum bands of the licensed primary …

To resolve the issue of efficient spectrum allocation, a precious resource in communication
systems, Cognitive Radio Adhoc Networks were proposed. Cognitive Radio Networks …

In this paper, we propose a spectrum map aided routing protocol for a distributed cognitive
radio network. We assume the presence of dedicated sensors that capture the spatio …

Cognitive Radio is an emerging technology to overcome the problem of spectrum scarcity
and underutilization. The vital requirement of Cognitive Radio Networks is quick route …

Cognitive radio network (CRN) is an emerging field of research in wireless communication
environment. The basic entities involve primary user (PU), secondary user (SU), and vacant …

The Cognitive Radio Network (CRN) has been developed to fulfill the high needs of future
wireless communication systems (5G). Rapid use of wireless communication services has …

A new communication paradigm is necessary for efficient utilization of existing radio
spectrums as bandwidths are limited and spectrum consumptions are inefficient. Sensor …

Cognitive radio networks that allow dynamic spectrum access are considered spectrally
more efficient than networks using fixed spectral allocation. These networks are …

Cognitive radio improves spectrum utilization by allowing secondary users to transmit on
vacant spectrum band allocated to licensed users without affecting their activity on that …