In recent years, with the rapid development in wireless communication and 5G networks, the
rapid growth in mobile users has been accompanied by an increasing demand for the …

The rapid technological advancements in the current modern world bring the attention of
researchers to fast and real-time healthcare and monitoring systems. Smart healthcare is …

Cognitive radio networks enable the detection and opportunistic access to an idle spectrum
through spectrum-sensing technologies, thus providing services to secondary users …

Introducing collaborative relay and simultaneous wireless information and power transfer
(SWIPT) techniques into a cognitive wireless network, named the SWIPT-enabled cognitive …

Abstract Cognitive Radio Networks (CRNs) offer a promising solution to spectrum scarcity by
enabling secondary users (SUs) to utilize unused spectrum allocated to primary users (PUs) …

The secondary users can opportunistically utilize the spectrum holes left by the licensed
users (also called primary users PUs) with the help of cognitive radio (CR) technology. The …

The next generation (6G) wireless communication technology has super advantages in high
transmission rates scenarios. Internet of Things (IoT) has been applied in recent years due …

Traditional spectrum sensing schemes devised under the presumption of circular signals
may suffer from performance deterioration when non-circular (NC) signals are present. To …

Compared with the traditional frequency division duplex and time division duplex, the in-
band full-duplex (IBFD) technology can double the spectrum utilization efficiency and …

This article investigates the performance of cooperative spectrum sensing (CSS) in a
heterogeneous multihop cognitive radio (CR) system in which N secondary users (SUs) with …