SHARED COOPERATIVE SPECTRUM SENSING METHOD, SENSING NODES AND FUSION CENTER IN COGNITIVE RADIO NETWORKS

摘要

A shared cooperative spectrum sensing method, local sensing nodes and fusion center in cognitive radio networks are provided in the embodiments of the present invention. According to the present invention, the sensing information collected from the sensing nodes in different cognitive radio networks is shared in shared cooperative spectrum sensing. At the fusion center, the spectrum decision is made based on the sensing information not only from its own sensing nodes but also from the adjacent sensing nodes who share their sensing information. Sharing sensing information among co-located cognitive radio networks is equivalent to extending the number of cooperative sensing nodes but it does not cause extra sensing overhead. Thus, the overall sensing performance is significantly improved.