论文标题
剪辑的可见光系统中的人造噪声设计用于物理层安全性
Design of Artificial Noise for Physical Layer Security in Visible Light Systems with Clipping
论文作者
论文摘要
尽管可见光通信（VLC）系统包含在给定的房间中，但确保房间中用户的安全性至关重要。在本文中，在没有明确的振幅约束（例如多载波系统）的情况下研究了人工噪声（AN）以增强VLC系统中物理层安全性的设计。在这样的系统中，需要剪辑以在LED的有限线性范围内约束输入信号。但是，这种剪辑过程会导致非线性剪辑失真，必须将其纳入AN设计中。为了促进解决此问题的解决方案，使用Charnes-Cooper转换和凸 - 洞穴程序（CCP）提出了亚最佳设计方法。数值结果表明，剪辑失真显着降低了保密水平，并且在改善保密性能方面使用无方案是有利的。
Though visible light communication (VLC) systems are contained to a given room, ensuring their security amongst users in a room is essential. In this paper, the design of artificial noise (AN) to enhance physical layer security in VLC systems is studied in the context of input signals with no explicit amplitude constraint (such as multicarrier systems). In such systems, clipping is needed to constrain the input signals within the limited linear ranges of the LEDs. However, this clipping process gives rise to non-linear clipping distortion, which must be incorporated into the AN design. To facilitate the solution of this problem, a sub-optimal design approach is presented using the Charnes-Cooper transformation and the convex-concave procedure (CCP). Numerical results show that the clipping distortion significantly reduces the secrecy level, and using AN is advantageous over the no-AN scheme in improving the secrecy performance.
