The increasing demand of usable spectrum range startled the world of serious shortage in
coming years. Cognitive Radio technology emerged to solve this problem by allowing …

Cognitive Radio emerged as a solution to solve the spectrum scarcity by allowing
unlicensed user to exist with the licensed users of the network whenever the licensed users …

Cognitive Radio (CR) is a potential solution for radio spectrum limitation problem. It is a
promising technology for the ever-developing wireless networks in order to efficiently utilize …

In cognitive radio network, secondary users (without license) are allowed to access the
licensed spectrum if primary users (having license) are not present. A serious threat in …

In this paper, we study the denial-of-service (DoS) attack on secondary users in a cognitive
radio network by primary user emulation (PUE). Most approaches in the literature on primary …

Modern society heavily depends on wireless spectrum for communication purposes. With
the rapid increase in mobile devices and Internet of Things (IoT), the need for wireless …

Cognitive Radio (CR) can ease the problem of spectrum scarcity by allowing secondary
users to coexist with incumbent users in licensed spectrum bands, while it causes no …

Recently, cognitive radio (CR) has recently emerged as a useful technology to improve the
efficiency of spectrum utilization. However, wireless networks are accompanied with an …

Cognitive radio (CR) is a flexible wireless network that can solve the scarcity and
underutilization problem of the spectrum by permitting unlicensed users to access licensed …