论文标题
基于FDTD的扩散散射和传输模型，用于毫米波通信系统的射线追踪
FDTD-Based Diffuse Scattering and Transmission Models for Ray-Tracing of Millimeter-Wave Communication Systems
论文作者
论文摘要
在毫米波频率下，从粗糙表面散射是一个重要的传播机制。在无线电传播建模工具（例如射线追踪）中包括这种机制是实现5G和超越系统的准确传播模型的关键步骤。我们建议解决这个问题的两个阶段解决方案。首先，使用FDTD方法，我们通过粗糙的平板（例如门，墙壁和窗户）建模反射和传输。我们的结果表明粗糙度的影响以及这种影响是否可以测量，可以降低反射和透射波的大小，或者（最重要的是）产生弥散的散射成分。在后一种情况下，表面有效地充当次要来源，其模式是通过全波分析计算的。然后，将此模式嵌入在射线跟踪器中，从而实现了弥漫性散射场成分的计算和追踪。我们在对28 GHz室内环境的射线追踪分析中证明了这种方法。
At millimeter-wave frequencies, diffuse scattering from rough surfaces is an important propagation mechanism. Including this mechanism in radio propagation modeling tools,such as ray-tracing, is a key step towards realizing accurate propagation models for 5G and beyond systems. We propose a two-stage solution to this problem. First, we model reflection and transmission through rough slabs, such as doors, walls and windows with the FDTD method. Our results indicate the influence of roughness and whether this influence is measurable, either reducing the magnitude of the reflected and transmitted waves, or (most importantly) generating diffuse scattering components. In the latter case, the surface effectively acts as a secondary source, whose pattern is computed by full-wave analysis. Then, this pattern is embedded in a ray-tracer, enabling the computation and tracing of diffuse scattering field components. We demonstrate this approach in the ray-tracing analysis of a 28 GHz indoor environment.
