Computer Science – Information Theory
Scientific paper
2010-11-16
Computer Science
Information Theory
13 pages, 7 figures
Scientific paper
This paper provides a comprehensive review of the domain of physical layer security for wireless communications. The essential premise of physical-layer security is to enable the exchange of confidential messages over a wireless medium in the presence of unauthorized eavesdroppers. This can be achieved primarily in two ways: without the need for a secret key by intelligently designing transmit coding strategies, or by exploiting the wireless communication medium to develop secret keys over public channels. We begin with an overview of the foundations dating back to the pioneering work of Shannon and Wyner on information-theoretic security. We then describe the evolution of secure transmission strategies from point-to-point channels to multiple-antenna systems, followed by generalizations to multiuser broadcast, multiple-access, interference, and relay networks. Subsequently, we evaluate secret-key establishment protocols based on physical layer mechanisms, along with an overview of practical secrecy-preserving code design.
Fakoorian Ali. S. A.
Huang Jing
Mukherjee Amitav
Swindlehurst Lee A.
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