标题： 一种用于6G动态射线追踪信道建模的高效预处理方法 显示英文标题

标题： An Efficient Pre-Processing Method for 6G Dynamic Ray-Tracing Channel Modeling

摘要： 射线追踪常用于城市区域以实现高精度的信道建模，但在高移动性场景中会遇到显著的计算复杂性。 在本文中，我们提出了一种动态射线追踪的新型预处理方法，通过在预处理阶段之前添加交点判断，以减少高移动性场景中的计算负担。 所提出的方法生成一个互可见性矩阵，该矩阵考虑交点判断，在环境中的静态物体之间建立可见性关系。 此外，互可见性矩阵可用于为移动发射机和接收机创建互可见性表，这可以提高三维（3D）动态射线追踪方法构建图像树的效率。 结果表明，与传统方法相比，动态射线追踪中提出的预处理方法在保持相同精度的情况下具有显著的时间节省。 通过所提出方法计算的信道特性可以很好地匹配信道测量结果。 显示英文摘要

摘要： The ray-tracing is often employed in urban areas for channel modeling with high accuracy but encounters a substantial computational complexity for high mobility scenarios. In this paper, we propose a novel pre-processing method for dynamic ray-tracing to reduce the computational burden in high-mobility scenarios by prepending the intersection judgment to the pre-processing stage. The proposed method generates an inter-visibility matrix that establishes visibility relationships among static objects in the environment considering the intersection judgment. Moreover, the inter-visibility matrix can be employed to create the inter-visibility table for mobile transmitters and receivers, which can improve the efficiency of constructing an image tree for the three-dimensional (3D) dynamic ray-tracing method. The results show that the proposed pre-processing method in dynamic ray-tracing has considerable time-saving compared with the traditional method while maintaining the same accuracy. The channel characteristics computed by the proposed method can well match to the channel measurements.