无线双向信道下的物理层安全理论与传输方法研究

项目名称： 无线双向信道下的物理层安全理论与传输方法研究

项目编号： No.61471392

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 姚富强

作者单位： 中国人民解放军陆军工程大学

项目金额： 85万元

中文摘要： 物理层安全利用传输链路的动态物理特性，提供安全可量化、无需密钥共享的防窃听安全机制，是当前无线通信安全领域研究的热点。针对实用化双向通信技术- - 同时同频全双工快速发展和双向信道下的物理层安全研究不足的背景，本项目开展无线双向信道下的物理层安全理论和传输方法研究。通过联合信道分布的双向编码方案，利用双向信道理论和信息论安全理论，分析双向窃听信道和双向中继窃听信道的可达安全速率域和安全容量；在理论分析基础上，通过联合发送-接收端的人工噪声技术和基于天线选择、协同干扰的安全策略，利用博弈论和优化理论，探寻多种双向窃听信道场景下的最优物理层安全传输方法；在搭建同时同频全双工试验平台基础上，进行无线双向信道下的低复杂度物理层安全传输方法验证。本项目研究成果，不仅能深化双向信道下的物理层安全理论，而且能拓展双向信道下的物理层安全传输方法，对基于信道特征的无线物理层安全研究和应用具有积极而重要的意义。

中文关键词： 物理层安全；双向窃听信道；双向中继窃听信道；安全性能；安全传输

英文摘要： Physical-Layer Security exploits the inherent randomness of the physical medium (including noises and channel fluctuations due to fading) to limit the amount of information that can be extracted at the 'bit' level by an unauthorized receiver. it's a hot topic in the domain of wireless communication security. Under the backgrounds of the rapid development for the technology of co-time co-frequency full-duplex,and the insufficient for the research of physical-layer security in wireless two-way communications channels, the project develops the theories and transmission techniques for physical-layer security in wireless two-way communications channels, and the main points of the project are as follows: 1) the analysis of achievable secrecy rate regions for wireless two-way wire-tap and two-way relay wire-tap channels using two-way coding scheme with channel distribution based on the theories of two-way communication channel and information-theoretic security; 2) the proposed transmission techniques for security based on artificial noise with joint transmitter-receiver and based on transmit antenna selection with low complexity in wireless two-way communications channels; 3) the experiment of transmission techniques for physical-layer security in wireless two-way communications channels on the test platform of co-time co-frequency full-duplex. The project research conclutions could not only deepen the theories of information-theoretic security, but also could expand the applications of physical-layer security for two-way communications channels, and it has a positive and vital significance for physical-layer security technology, which is based on the characteristics of channel.

英文关键词： physical-layer security;two-way wiretap channel;two-way relay wiretap channel;secure performance;secure transmission