A Cooperative Spectrum Sensing Scheme Based on Extension Theory forCognitive Radio Sensor Networks

摘要

This paper proposes a cooperative censoring spectrum sensing scheme based on dependent function of extensiontheory for Cognitive Radio Sensor Networks (CRSN). The scheme uses the dependent function of Extension theoryto identify the presence or absence of the licensed user's (LU) signal, and then calculate the related degree through dependentfunction to identify the initial test results of licensed users, and then send these results to the fusion center. Use atrust evaluation scheme based on noise jamming and channel attenuation for each node, and then this trust evaluation resultof each node is sent to the fusion center. The fusion center makes the final decision by the K-M rule. Simulation resultsshow that the proposed scheme could improve the detect probability effectively.