论文标题
在存在离散相移和多个窃听者的情况下，RIS辅助通信系统的Ergodic保密率
Ergodic Secrecy Rate of RIS-Assisted Communication Systems in the Presence of Discrete Phase Shifts and Multiple Eavesdroppers
论文作者
论文摘要
这封信研究了在存在离散相移和多个窃听器（EVES）的情况下，可重构智能表面（RIS）辅助通信系统的梯形保密率（ESR）。特别是，对于非批离和勾结的eves，得出了ESR的闭合形式近似。当RIS $ N $的反射元素数量较大时，分析结果被证明是准确的。提供了渐近分析以调查$ n $对ESR的影响，并证明ESR对非批评和核对eves均具有$ \ log_2 n $。提供数值结果以验证分析结果和获得的缩放定律。
This letter investigates the ergodic secrecy rate (ESR) of a reconfigurable intelligent surface (RIS)-assisted communication system in the presence of discrete phase shifts and multiple eavesdroppers (Eves). In particular, a closed-form approximation of the ESR is derived for both non-colluding and colluding Eves. The analytical results are shown to be accurate when the number of reflecting elements of the RIS $N$ is large. Asymptotic analysis is provided to investigate the impact of $N$ on the ESR, and it is proved that the ESR scales with $\log_2 N$ for both non-colluding and colluding Eves. Numerical results are provided to verify the analytical results and the obtained scaling laws.
