论文标题
RIS辅助NOMA系统的保密中断概率分析
Secrecy Outage Probability Analysis for RIS-Assisted NOMA Systems
论文作者
论文摘要
在本文中，研究了多用户方案中可重新配置的可重构智能表面（RIS）辅助的非正交多访问（NOMA）系统的物理层安全性（PLS），我们认为，我们认为窃听者还利用了RIS的优势。更具体地说，我们得出了保密中断概率（SOP）的分析结果。从数值结果中，我们观察到与传统的Noma系统相比，RIS的使用可以改善保密性能。但是，对于最坏的情况是，在窃听器中收到的信号来自RISS和Source，增加RIS上的智能元素数量对保密性能产生了负面影响。在高SNR下，系统的SOP趋于恒定。最后，可以通过小组选择来提高保密性能。
In this paper, the physical layer security (PLS) for a novel reconfigurable intelligent surface (RIS)-assisted non-orthogonal multiple access (NOMA) system in a multi-user scenario is investigated, where we consider the worst case that the eavesdropper also utilizes the advantage of the RISs. More specifically, we derive analytical results for the secrecy outage probability (SOP). From the numerical results, we observe that the use of RISs can improve the secrecy performance compared to traditional NOMA systems. However, for the worst case that the received signals at the eavesdropper comes from the RISs and source, increasing the number of intelligent elements on the RIS has a negative impact on the secrecy performance. At high SNRs, the system's SOP tends to a constant. Finally, the secrecy performance can be improved through the group selection.
