Spectrum Sensing Cluster Techniques in Cognitive Radio Networks

Group Average defines cluster proximity to be the average pairwise length of edges from different clusters. All the Secondary Users(SUs)in the clusters send the source information to their Cluster Head(CH) through the available common channel at this location. Each cluster in the CHs transmit decision to the common receiver. the proposed method provide dynamical Hierarchical clustering scheme with bandwidth constraints according to the inter and intra user cluster channel conditions with reduce overhead and delay of sensing. Clusters based Channel Sensing provides preferable stability and scalability because of its low complexity under dynamic Primary Users(PUs) activity.