Characterization of the Secrecy Region of a Single Relay Cooperative System

Abstract—Security is an important aspect for the future wireless networks. Since the number of network nodes increases constantly, and, in addition, the networks are decentralized and adhoc in nature, it becomes more challenging to apply the current cryptographic methods that require exchange of keys between the communicating parties. Information-theoretic secrecy is an emerging security field that explores the possibility of achieving perfect secrecy data transmission between the intended network nodes, while possible malicious nodes (also called eavesdroppers) are kept ignorant of the transmitted information. In other words, that is the ability of the physical layer to provide security (beside the reliability) of the transmitted (broadcasted) data. For that reason, it is often called physical layer security. In this paper we observe how a simple cooperative network with one relay node can improve the physical layer security by decreasing the area in which the eavesdropper can resi...

• Type: Journal
• Year: 2010
• Where: WCNC
• Authors: Ninoslav Marina, Are Hjørungnes
• Keywords: Computer Networks, Physical Layer, Physical Layer Security, WCNC 2010, Wireless Network