Cognitive radio networks for agile ubiquitous communications: fundamental analysis, enabling technologies, and service provisioning

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Enabled by regulatory changes and technology advances, cognitive radio (CR) is emerging as the promising solution for utilizing the radio spectrum in an efficient way to satisfy the increasing demands for spectrum access, and provide ubiquitous communications in the future generation of wireless systems. CR offers new perspectives for spectrum sharing opportunities. However, this can only be achieved by implementing intelligent, flexible and dynamic spectrum-sharing control and management between the different involved parties, e.g., service/content providers and users. This trend poses significant challenges, which range from defining the fundamental performance limits of this radio technology to designing communication strategies and protocols that ensure efficient deployment and operation of future cognitive radio networks (CRNs). In this context, the main goal of this research program is to advance fundamental contributions to enable essential functionalities in future CRNs. Our focus is on developing communication strategies and networking protocols that make the best use of the available resources and deliver ubiquitous communications and quality of service guarantee. To that end, we propose solutions built upon an agile architecture that provides the CRN with the most useful control capabilities and adaptation, and demonstrating an awareness of the environment and an ability to automatically react to changes and requirements. Our research program couples research and educational development closely, and will integrate communication theory and networking in a unique and natural fashion. We will introduce a quantitative, systematic and fundamental approach to CR networked communications. Our research will be in a leading position for providing smart and reliable communication schemes for these emerging environments. As such, significant technical and industrial impacts are expected from this research program. The new technologies to be developed will not only result in high-technology transfer, but will also contribute to placing Canada at a cutting-edge in the development of new wireless technologies. The research program will also provide leading-edge training for graduate students.