Analysis, design and optimization of robust and secure wireless communication systems

稳健且安全的无线通信系统的分析、设计和优化

• 批准号: RGPIN-2017-04191
• 负责人: Loyka, Sergey
• 金额: $ 2.4万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=658009
• 关键词: Analysis; design; optimization; robust; secure

Wireless communications are an essential part of modern society and the way it functions at different layers. Wide availability of multi-media content puts a great demand on the supported rates and quality-of-service. A large number of sensitive transactions require a high degree of security offered by such systems. A high mobility of users makes the wireless propagation channel highly dynamic/unpredictable and hence dictates an adaptive and robust design of systems. These 3 key challenges will be addressed in the proposed project. Specifically, methods for analysis, design and optimization of secure and robust wireless communication systems will be studied.***To address the requirement for high rates, wireless multiple-input multiple-output (MIMO, or multi-antenna) systems are widely adopted by academia and industry due to their high spectral efficiency. The broadcast nature of wireless channels stimulated significant interest in their security aspects. While cryptography provides valuable tools for ensuring the secrecy of communications, it also comes with a number of drawbacks (leaked keys etc.). Physical-layer security has recently emerged as a powerful approach, which is complementary to cryptography and which allows to address a number of the shortcomings of the latter. Hence, the physical-layer security approach to MIMO channels will be studied using the tools of information and communication theory. In particular, optimal (adaptive and robust) transmission techniques will be developed, which will provide high data rates over highly-variable channels ensuring the secrecy of the transmitted data at the same time. Real-world (non-stationary, non-ergodic) nature of the wireless propagation channel as well as its estimation inaccuracy will be taken into account. The powerful tools of convex optimization will be used.******Overall, the project will address three key and inter-related aspects of secure wireless communications: its information-theoretic foundations, optimal signaling strategies and practical implementation issues (e.g. robustness to channel uncertainty).*****

无线通信是现代社会及其在不同层次的运作方式的重要组成部分。多媒体内容的广泛可用性对支持率和服务质量的需求很大。大量敏感交易需要此类系统提供的高度安全性。用户的高移动性使无线传播通道高度动态/不可预测，因此决定了系统的适应性和强大的设计。这三个主要挑战将在拟议的项目中解决。具体而言，将研究用于分析，设计和优化安全和稳健无线通信系统的方法。无线渠道的广播性质激发了对其安全方面的重大兴趣。尽管密码学提供了确保通信保密的有价值的工具，但它也带有许多缺点（泄漏的密钥等）。物理层安全性最近已成为一种强大的方法，这是对密码学的补充，并且可以解决后者的许多缺点。因此，将使用信息和通信理论的工具来研究MIMO渠道的物理层安全方法。特别是，将开发最佳（自适应和健壮）传输技术，该技术将在高度变化的通道上提供高数据速率，以确保同时发送传输数据的保密。无线传播渠道的真实世界（非平稳，非共生性）性质以及其估计不准确性将考虑在内。 ******总体而言，该项目将解决安全无线通信的三个关键和相互关联的方面：其信息理论基础，最佳信号策略和实际实现问题（例如，对渠道不确定性的鲁棒性）。*************************************