A study analysis of cooperative spectrum sensing in cognitive radio network

Abstract

Spectrum sensing is one of the most mandatory mechanisms of Cognitive Radio (CR) to find the unused Spectrum. Spectrum sensing has renewed on a very active scrutiny area over recent years. As it is one of the most important tasks performed using cognitive radio and the implementation of the other functions of the cognitive radio is based on the spectrum sensing. So it is mandatory for cognitive radio to perform this task very decisively. This paper presents an overview of spectrum sensing, CR architecture, techniques on the basis of research, discusses the characteristics and challenges related to its different aspects of a CR. Multipath routing based spectrum sensing has been proposed and used widely since it doesn't require dispatched signal properties, channel information, or even the type of modulation.