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将室内无线信道仿真中常用的几何光学和射线追踪技术,引入到对客机机舱内部的超宽带(Ultra-WideBand,UWB)信道研究当中。信道仿真的主要算法基于一种称为射线密度归一化(RayDensityNormalization,RDN)的方法。该方法使用射线密度的概念来计算每条射线对接收点处总信号强度的贡献。为了验证方法的有效性,实验构建了一个Boeing737-200客机机舱模型进行仿真。仿真将接收机设置在每个座位的顶部、扶手和底部,以研究不同水平高度信道的差别。仿真中对路径损耗和均方根(RMS)时延扩展两类大尺度信道参数进行了统计和分析,部分仿真结果与国外实测结果进行了对比。对比结果证明了仿真结果的保真度以及现有仿真工具的有效性。
The commonly used techniques of geometrical optics and ray tracing in indoor wireless channel simulation are introduced into the study of Ultra-WideBand (UWB) channels inside the passenger cabin. The main algorithm for channel simulation is based on a method called Ray Denseness Normalization (RDN). This method uses the concept of ray density to calculate the contribution of each ray to the total signal strength at the receiving point. In order to verify the effectiveness of the method, a Boeing737-200 passenger cabin model was constructed for simulation. Simulation Set the receiver at the top, armrest, and bottom of each seat to study the differences in the channel at different levels. In the simulation, two types of large-scale channel parameters such as path loss and root mean square (RMS) delay spread were statistically analyzed and analyzed. Some simulation results were compared with the measured data from abroad. The comparison results demonstrate the fidelity of the simulation results and the effectiveness of the existing simulation tools.