With the rapid development of wireless communications technologies, radio spectrum has
become a type of extremely scarce resources in meeting the increasing demands for …

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 …

A cognitive radio (CR) network should be able to sense its environment and adapt
communication to utilize the unused licensed spectrum without interfering with licensed …

In cognitive radio (CR) networks, medium access control (MAC) protocols play an important
role to exploit the spectrum opportunities, manage the interference to primary users (PUs) …

Real-time systems are becoming increasingly complex. A modern car, for example, requires
a multitude of control tasks, such as braking, active suspension, and collision avoidance …

Cognitive radio is viewed as a disruptive technology innovation to improve spectrum
efficiency. The deployment of coexisting cognitive radio networks, however, raises a great …

Collaborative spectrum sensing in cognitive radio networks mitigates the negative
propagation effects of the wireless channel and increases the sensing reliability …

A Multi-Channel Cognitive MAC Protocol for adhoc cognitive networks that uses a
distributed learning reinforcement scheme is proposed in this paper. The proposed protocol …

Designing a medium access control (MAC) protocol is a key for implementing any practical
wireless network. In general, a MAC protocol is responsible for coordinating users in …

The limitation of spectrum has become a major bottleneck of the development of next
generation radio system. One of the key challenges of the emerging opportunistic cognitive …