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The Journal of The Korea Institute of Intelligent Transport Systems Vol.7 No.6 pp.101-109
클러스터링 기반의 CR시스템에서 가중치 협력 스펙트럼 센싱 기술의 개선연구
Improved Weighted-Collaborative Spectrum Sensing Scheme Using Clustering in the Cognitive Radio System
Abstract
In this paper, we introduce clustering scheme to calculate probability of detection which is practically required for conventional weighted-collaborative sensing technique. We also propose an improved weighted-collaborative spectrum sensing scheme using new weight generation algorithm to achieve better performance in Cognitive Radio systems. We calculate Pd in each cluster which is a CR users group with similar channel situation. New weight factor is generated using square sum of all cluster's Pds. Simulations under slow fading show that we can get better total detection probability and lower false alarm rate when PU (Primary User) suddenly terminates their transmission.
