On Physical Layer Security for Cognitive Radio Networks
نویسندگان
چکیده
منابع مشابه
The Security of Physical Layer in Cognitive Radio Networks
—Cognitive Radio (CR) is a novel technology that promises to solve the lack of spectrum by allowing secondary users to use licensed band, so that they can coexist with primary users without causing interference to their communications. With the development of CR, extending to the level of network, cognitive radio networks (CRNs) emerge as the times require. Nowadays the operational aspects of ...
متن کاملSecurity Aspects in Emerging Wireless Networks
Advances in wireless technologies provide both benefits and challenges when it comes to security. Communications over wireless channels are, by nature, insecure and easily susceptible to various kinds of threats. Despite the current efforts from academia and industry, the security paradigms protecting the confidentiality of wireless communications remain open issue. This paper seeks to provide ...
متن کاملCountermeasure Against Physical Layer Attack in Cognitive Radio Networks
A “Cognitive radio” is a latest technology aiming to solve the spectrum scarcity problem by allocating the spectrum to secondary users. It aims to improve the utilization of the radio spectrum by reducing the spectrum holes. The existing systems that have been proposed so far provided the solution for some attacks in the Physical layer of Cognitive radio with a limited number of nodes, evaluate...
متن کاملSecure Switch-and-Stay Combining with Multiple Antennas in Cognitive Radio Relay Networks
Eavesdropping is a major concern in Cognitive Radio relay systems, due to the broadcast nature of these systems. Physical Layer Security (PLS) has been seen as a good alternative to enhance the secrecy performance of these networks. Based on the concept of perfect secrecy, PLS uses an information-theoretic approach to prevent secondary transmissions from malicious attacks. In this paper, the Se...
متن کاملWireless Physical Layer Security with Imperfect Channel State Information: A Survey
Physical layer security is an emerging technique to improve the wireless communication security, which is widely regarded as a complement to cryptographic technologies. To design physical layer security techniques under practical scenarios, the uncertainty and imperfections in the channel knowledge need to be taken into consideration. This paper provides a survey of recent research and developm...
متن کامل