Spectrum sensing is an integral part of medium access control (MAC) in cognitive radio (CR)
networks as its reliability determines the success of transmission. However, it is an energy …

Cognitive radio provides a promising solution to reliable and time-efficient wireless sensor
networks. However, cognitive capability brings a quite challenging issue to energy …

In this paper, we consider medium access control (MAC) protocol design for random-access
cognitive radio (CR) networks. A two-level opportunistic spectrum access strategy is …

In recent year, the most emerging and growing field of research and development is “Internet
of Things”(IoT). This is due to advancement in wireless sensor network (WSN) which operate …

Radio spectrum resource is of fundamental importance for wireless communication. Recent
reports show that most available spectrum has been allocated. While some of the spectrum …

Cognitive radio sensor networks (CRSNs) are multi-channel-capable networks that inherit
some of the challenges of traditional wireless sensor networks (WSNs), such as limited …

In cognitive radio (CR) networks, spectrum sensing is a crucial technique for discovering
spectrum opportunities for secondary users (SUs). The quality of spectrum sensing is …

Dynamic spectrum access in the form of cognitive radio (CR) has gained traction in wireless
sensor networks (WSN) because of a) scarcity caused by the proliferation of wireless …

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 …

A cognitive radio (CR) system exploits spectrum bands that primary users (PUs) are licensed
to use. The CR performs channel sensing to find spectrum opportunities. Conventional …