Cooperative Spectrum Sensing in Cognitive Radio Network Using Selective Soft-Information Fusion Scheme

This paper examines the effectiveness of a cognitive radio (CR) network using a conventional energy detector and the selective soft-information fusion rule when confronted with faulty control channels. Using a selective soft-information fusion scheme, we have formulated a mathematical expression that provides a closed-form solution for both the probability of a false alarm and the probability of a missed detection. Several new and extant results are presented as special scenarios in the proposed solution. We also investigate optimal values of the selective soft fusion's threshold and spectrum-aware CR users by minimizing the CR network's average error rate. Subsequently, numerical results illustrate the proposed CR network's theoretical findings.