One of the important trends which is supposed to have more attention in the system of
cognitive radio is wireless security models. Security requirements for CRNs are the same as …

Cognitive radio is a recent technology that enhances the usage of spectrum resources.
Efficient assignment of unused spectrum to unlicensed users is an important problem …

Cognitive radios have been identified as a solution to the crowded spectrum issue. With the
realization of cognitive radio networks came the recognition that both new and old security …

Cognitive radio is a relatively new technology that improves spectrum utilization. The
efficient assignment of unlicensed users to unused spectrum is a major issue. Spectrum …

Security is a critical issue in Cognitive Radio Networks CRN. And in order to implement
appropriate security mechanisms, various possible attacks on (CRN) must be identified. This …

Cognitive radio (CR) has been introduced to accommodate the steady increment in the
spectrum demand. Wireless security in CR network (CRN) is a challenging technical area …

The exponential growth in the Internet of Things (IoT) devices for the Internet of Everything
(IoE) services demands more operating spectrum. Utilizing the unlicensed spectrum by a …

In cognitive radio networks (CRNs), secondary users (SUs) can flexibly access primary
users'(PUs') idle spectrum bands, but such spectrum opportunities are dynamic due to PUs' …

Cognitive radio (CR) has been introduced to accommodate the steady increment in the
spectrum demand. In CR networks, unlicensed users, which are referred to as secondary …

Cognitive radio technology can be utilized to make optimal use of spectrum. Spectrum
allocation is a critical operation for assigning appropriate idle-free frequency bands to the …