A Review on Energy Efficient Cooperative Spectrum Sensing Techniques and Clustering Schemes in CRN

Abstract

In mobile communication systems, with the advancement of new industries, online businesses, medical facilities, and scientific technologies has increased the requirements of the spectrum. This could become possible by using a technique called Cognitive Radio (CR) which reduces the probability of false alarm in multi-fading networks. The CR is an intelligent technology which is used for spectrum detection. This technique senses the vacant channels and detects the availability of the Licensed User (LU). In this study, an overview of Energy efficient CSS techniques along with clustering schemes have been discussed. The overview of the CR network along with non-cooperative and cooperative spectrum sensing is also discussed. The paradigm of clustering is grouped to minimize the collisions and computational costs to enhance the detection performance. In fact, clustering orders nodes into groups, and clusters, to supply network better realization improvement. Clustering challenges are also discussed in this paper. In addition, a brief explanation of Cooperative Spectrum Sensing, Cluster-Based CSS, Fusion Schemes, Cooperative Spectrum Sensing, and Energy Efficiency are included. In the future, research can be related to different hybrid techniques for better communication systems in terms of time, codes, frequency, angle, and space.