Multiuser MIMO Concept for Physical Layer Security in Multibeam Satellite Systems
Periodicals(2021)
摘要
AbstractIn satellite communication downlinks, physical layer security is challenging to achieve due to their broadcasting nature and Line-of-Sight channel characteristics. This paper provides a precoding algorithm to secure the downlinks of multiple users against multiple eavesdroppers with optimization of the minimum secrecy capacity. By the use of artificial noise, a positive secrecy capacity is achievable even if the number of eavesdroppers is higher than the number of beams. We demonstrate that a multiple-reflector antenna design provides a significantly higher secrecy and throughput performance when compared to a single-reflector design due to additional degrees of freedom, exhibited by the signal phases. The total vulnerability region is introduced as a new figure of merit with respect to unidentified eavesdroppers.
更多查看译文
关键词
Satellite antennas, Array signal processing, Precoding, Satellite broadcasting, Physical layer security, Downlink, Throughput, Anti-eavesdropping, multiuser MIMO, physical layer security, precoding, satellite communications
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要