论文标题
基于RIS辅助通信的基于Copula的建模：中断概率分析
Copula-Based Modeling of RIS-Assisted Communications: Outage Probability Analysis
论文作者
论文摘要
在存在相位噪声的情况下，可重构智能表面（RIS）辅助式通信的信噪比（SNR）的统计表征是一个重要的开放问题。在这封信中，我们利用副群体建模的概念来捕获由于存在离散相位噪声而出现的非标准依赖性特征。特别是，我们考虑RIS系统在Rayleighfading通道中的中断概率，并提供联合分布以表征由于RIS在RIS处使用有限分辨率相变引起的依赖性。数值评估证实了中断概率的闭合形式表达的有效性，并激发了双变量copula进行进一步研究。
Statistical characterization of the signal-to-noise ratio (SNR) of reconfigurable intelligent surface (RIS)-assistedcommunications in the presence of phase noise is an important open issue. In this letter, we exploit the concept of copula modeling to capture the non-standard dependence features that appear due to the presence of discrete phase noise. In particular,we consider the outage probability of RIS systems in Rayleighfading channels and provide joint distributions to characterize the dependencies due to the use of finite resolution phase shifters at the RIS. Numerical assessments confirm the validity of closed-form expressions of the outage probability and motivate the use of bivariate copula for further RIS studies.
