This paper studies closed-form expression between detect probability and false alarm probability for centralized cooperative network in cognitive radio based on a fuzzy decision scheme. By introducing two thresholds and fuzzy logic values to represent the reliability of the decision results, a novel fuzzy decision scheme for cooperative spectrum sensing is proposed. Analysis and simulations show that the proposed scheme could improve the detect probability effectively under 'AND' and 'OR' fusion rules, and reduce the number of cooperating cognitive users which depends on Ae.
展开▼
