Cognitive radio (CR) is a promising wireless technology that provides efficient spectral
usage. Medium Access Control (MAC) has an important role in several cognitive radio …

We consider a multichannel Cognitive Radio Network (CRN), where secondary users
sequentially sense channels for opportunistic spectrum access. In this scenario, the Channel …

Abstract Cognitive Radio Network (CRN) is an intelligent wireless communication system
that adapts itself to variations in the incoming radio frequency stimuli by modifying the …

With the rapid increase of the wireless applications, the cognitive radio network as a
promising solution has attracted a lot of researches in recent years. One of the critical issues …

In cases where the licensed radio spectrum is underutilized, cognitive radio technology
enables cognitive devices to sense and then dynamically access this scarce resource …

The rapidly increasing number of wireless applications are making the wireless spectrum
scarcity a serious problem. Cognitive MAC protocols have emerged as a promising solution …

Cognitive networking deals with using cognition to the entire network protocol stack to
achieve stack-wide, as well as network-wide performance goals; unlike cognitive radios that …

In the overlay medium access control (MAC) of cognitive radio networks, secondary user
(SU) uses the spectrum portion which is assigned to primary user (PU), when PU is not …

The authors propose Markovian‐based spectrum sensing policies in a cognitive radio
system that leverages past sensing outcomes of several cooperating secondary users (SUs) …

This paper presents an energy efficient cognitive radio multichannel medium access control
(MAC) protocol called ECR-MAC for battlefield communications. ECR-MAC requires only a …