论文标题
瑞利褪色的建模和通道硬化，用于可重构智能表面
Rayleigh Fading Modeling and Channel Hardening for Reconfigurable Intelligent Surfaces
论文作者
论文摘要
对任何无线技术的现实性能评估都需要使用反映其主要特征的渠道模型。独立且分布相同的瑞利褪色通道模型是（现在仍然是）关于散射环境中多个天线技术的大多数理论研究的基础。这封信表明，当使用具有矩形几何形状的可重构智能表面（RIS）时，这种模型并未在物理上出现，并提供了一种替代性可行的雷利褪色模型，在评估RIS辅助通信时可以用作基线。该模型用于重新审视基本的RIS属性，例如，空间相关矩阵和通道硬化的等级。
A realistic performance assessment of any wireless technology requires the use of a channel model that reflects its main characteristics. The independent and identically distributed Rayleigh fading channel model has been (and still is) the basis of most theoretical research on multiple antenna technologies in scattering environments. This letter shows that such a model is not physically appearing when using a reconfigurable intelligent surface (RIS) with rectangular geometry and provides an alternative physically feasible Rayleigh fading model that can be used as a baseline when evaluating RIS-aided communications. The model is used to revisit the basic RIS properties, e.g., the rank of spatial correlation matrices and channel hardening.
