Unlocking the Full Potential of Spectrum: A Comprehensive Review of Cognitive Radio Technology

Abstract

Wireless networks are confronted with enormous challenge because of the limited availability of radio spectrum, which has culminated in spectrum congestion and ineffective utilization of the spectrum's resources. This has led to a great deal of innovation in both communication and mobile devices that enable the delivery of high-quality multimedia content from various sources. However, despite these advances, there is still a need to find new ways to utilize existing frequency bands. Recent years have witnessed an awful research on cognitive radio (CR) based networks development. This review paper provides a comprehensive overview of CR technology, its capabilities, and its various applications in wireless communications. It not only provides an understanding of CR technology, its capabilities, and its potential applications; but also serves as a useful resource for researchers, practitioners and students interested in wireless communications and cognitive radio technology.