认知蜂窝网络中物理层信息安全传输技术研究

项目名称： 认知蜂窝网络中物理层信息安全传输技术研究

项目编号： No.61471393

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： 杨炜伟

作者单位： 中国人民解放军陆军工程大学

项目金额： 82万元

中文摘要： 物理层安全技术为保障认知蜂窝网络中信息安全传输提供了新的思路。针对安全敏感业务的传输问题，本项目深入研究面向下一代移动应用的认知蜂窝网络中物理层安全信息理论，揭示安全性和可靠性、有效性、能效性之间的折衷关系，建立以安全性为中心兼顾其它性能的安全传输理论框架，在此指导下，探寻增强物理层安全性能的通信信号处理和无线资源管理方法。借鉴干扰对准思想，高效管理和利用主、次网络之间的相互干扰及协同人工干扰，设计优化的预编码/波束赋形方案来增强物理层安全性能；针对认知蜂窝网络大规模、多层、异构混合的组网特点和节点位置、信道以及用户行为的动态变化特征，基于异构博弈模型和随机变分不等式设计能兼顾存在性、唯一性和帕累托最优性的多层资源分配方案，以改善认知蜂窝网络物理层安全性能。

中文关键词： 认知蜂窝网络；物理层安全；性能分析；信号处理；资源管理

英文摘要： Physical layer security techniques provide a new perspectiveto solve the information security problem in cognitive cellular networks. This proposal studies the physical layer security information theory in cognitive cellular networks for next generation mobile applications, analyses the tradeoff among security, reliability, effectiveness and energy efficiency, and establishes the theoretical framework forsecuretransmission which considers mainly the security performance and takes into account other performance. Under the guidance of these results, communication signal processing and radio resource management methods are investigated to enhance the physical layer security performance. Using interference alignment for reference, the mutual interference between primary network and the secondary network, and cooperative jamming will be efficiently managed and utilized, and the optimal precoding/beamforming schemes will be designed to enhance the physical layer security performance. Considering the fact that cognitive cellular networks are large scale，heterogeneous and have multiple tiers, and that the characteristics of node location，channel fading and strategic action changes dynamically, we adopt the hierarchical game model and stochastic differential inequality to analyze the existence, uniqueness and Pareto optimality of the stochastic equilibrium. Based on the achieved theoretic results, we then design the optimal dynamic and hierarchical resource allocation schemes to improve the network security performance.

英文关键词： Cognitive Cellular Networks;Physical Layer Security;Performance Analysis;Signal Processing;Resource Management