The State of the Art in Cognitive Radio Networks in 5G Hetergeneous Networks

Abstract

This chapter addresses cognitive radio systems (CRSs) in the 5G network and presents the existing, emerging, and potential applications employing CRS capabilities and the related enabling technologies, including the impacts of CRS technology on the use of spectrum from a technical perspective. The description of such technologies, operational elements, and their challenges are also presented. Furthermore, this chapter provides high level characteristics, operational and technical requirements related to CRS technology, their performances, and potential benefits. Finally, factors related to the introduction of CRS technologies and corresponding migration issues are discussed.