Abstract

Spectrum sensing technology is the foundation of the cognitive radio, and cooperative spectrum sensing can also improve the detection performance of the system. But this kind of collaborative way will decrease the cognitive radio network sensitivity and bring new security danger. In order to solve this problem, in this study, a credibility-based cooperative spectrum sensing technology in cognitive radio network was proposed, which compared the second user's local sensing results and the base station final decision to calculate the credibility of the second users, and then applied it to cooperative spectrum sensing. The simulation results showed that when the malicious node or fault node existed, the proposed approach in this paper can get better detection performance than the traditional test methods.

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