An Efficient Relay Selection and Clustering Technique for Spectrum Sharing Network

When we consider a spectrum sharing networks it have primary user and secondary user. Spectrum share by the first user is called primary user. Primary user used the allocated spectrum without affected any interference. But in the case of secondary user used the primary user spectrum it has much interference occur, also need more emitted power. xG networks are envisioned to provide opportunistic access to the licensed spectrum using unlicensed users. This setting enables multiple systems being deployed in overlapping locations and spectrum.so primary user and secondary user speed also decreases. In our project above problem should be overcome by using proper relay selection and clustering technique. Here used distributed relay selection and clustering to improve the secondary rate and also reduced the secondary emitted power.