Performance Comparison of Centralized Cooperative Spectrum Sensing Based on Voting Rules in Cognitive Radio

Samrat Chandrakant Shinde, Ajitsinh N Jadhav

spectrum sensing, cognitive radio, Energy detection, cooperative sensing, fusion rule.

In this paper we focus on optimizing the spectrum sensing capability of cognitive radio network. Cognitive users are allowed to share the licensed spectrum allotted to the primary user, when kept unutilized by it. Here energy detection technique is used for spectrum sensing of the radio environment. To overcome the individual sensing difficulties, the cooperative centralized spectrum sensing is introduced where multiple cognitive radios actively participate to enhance the sensing capability of cognitive radio environment. To optimize further the centralized cooperative sensing the decision fusion rules such as AND rule, OR rule & Majority rule are implemented under various different conditions.