无线通信物理层安全技术研究

无线通信天然的多径时变的特性，为其在物理层进行保密传输提供了可能性。文章分析了物理层安全技术的技术背景和研究现状，对于其理论基础，以及关键技术进行了重点的介绍，并对比分析了其中的一些技术方案。近年来，物理层安全技术已经逐步成为研究的热点，在编码技术，协作干扰，密钥产生等研究方向上已经有了相当程度的进展，正在逐步从理论走向应用。

Physical Layer Security in Wireless Communication

Security is one of the key issues in wireless communication. It is critical to send confidential data to legitimate user rather than intruders in an open space. In recent years, physical layer security attracts much research interest. This article offers a tutorial on several new methods to ensure security at physical layer in wireless communication. The introduction includes several aspects, from the theoretical base of the physical layer security, secure code design, cooperative jamming, to secret key generation, and comparing of the different techniques. Finally we make a view on the future works in this area.