期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2012
卷号：9
期号：4
出版社：IJCSI Press
摘要：Cognitive Radio is being intensively investigated by regulatory bodies as the enabling technology for opportunistic access to the TV white spaces. The successful deployment of Cognitive Radio Networks and the realization of their benefits depend on the assignment of essential security challenges to resist misuse of the systems. In this paper, we propose a primary user authentication scheme in the presence of attackers. Our system is based on the deployment of multiple stages of helper nodes, helper nodes in the first stage are fixed and close to primary user, while helper nodes in the next stages are placed within the primary users coverage area. Helper nodes are responsible for sensing the spectrum based on the received signal power detection scheme, and broadcasting the spectrum information to secondary users. Compared to prior work, our system can provide a stricter requirement for probability of false alarm and probability of missing.
关键词：Cognitive Radio Networks; Dynamic Spectrum Access; Opportunistic Spectrum Sensing; Primary User Emulation; Byzantine Failure.
