Performance Analysis of Distributed Coordinated Spectrum Sensing in Cognitive Radio Networks

This paper present the work on Cognitive Radio Networks (CRN) to improve the spectrum sensing performance. By using distributed coordinated spectrum sensing all the Secondary Users (SUs) are grouped into optimum number of clusters, selection of each cluster is based on the priority of predefined Cluster Heads(CHs) among secondary users. All the CHs collects the source information from the remaining nodes, then transmit decision to the common receiver. The proposed method provide dynamical clustering Distributed Coordinated Spectrum Sensing (DCSS) scheme with bandwidth constraints according to the inter and intra cluster channel conditions with reduced overhead and delay of sensing. DCSS provides preferable scalability and stability because of its low complexity under dynamic Primary Users (PUs) activity.