DATA FALSIFICATION LENIENT SECURE SPECTRUM SENSING BY COGNITIVE USER RELIABILITY VERIFICATION

Cognitive radio network’s primary challenge is sensing of primary user signal and efficiently handling the spectrum availability. Spectrum sensing is the way ahead and vital for Dynamic Spectrum Access, where malicious users deploy Spectrum Sensing Data Falsification (SSDF) attacks. This paper discusses the technique to calculate the importance of using nodes for primary as well as secondary users. It prevents spectrum problems to primary users from Spectrum Sensing Data Falsification by secondary users and also shields secondary users from unauthorized primary users. Simulation runs of the novel approach using usual network conditions and SSDF attacks greatly bought down the error rate of spectrum decision and at the same time improved the detection rate of malicious cognitive nodes.