基于混合方法的室内毫米波传播特性研究

发布时间：2018-06-13 10:58

本文选题：射线跟踪 + 时域有限差分　；参考：《重庆邮电大学学报(自然科学版)》2014年01期

【摘要】：为了研究室内毫米波的传播特性,结合射线跟踪法(ray tracing,RT)和时域有限差分法(finite difference time domain,FDTD)各自的优点,提出了一种基于射线跟踪法和时域有限差分法的混合方法。介绍了混合方法的基本思想,给出了混合方法建模步骤,利用射线跟踪法分析较为空旷的区域,而对于射线跟踪法不能准确预测的含有复杂间断点区域,用时域有限差分法进行了分析。探讨了发射信号频率为60 GHz,室内和室外到室内2种仿真环境下接收信号场强随距离变化的分布以及某一定点接收信号的时延信息。仿真结果可知,复杂环境下混合方法比射线跟踪法的精度高;在接收点的计算量上,混合方法比时域有限差分方法的计算量少。由此表明,混合方法是一种行之有效的方法,能够准确地预测毫米波的传播特性。
[Abstract]:In order to study the propagation characteristics of indoor millimeter-wave, a hybrid method based on ray tracing and finite-difference time-domain method (FDTD) is proposed, which combines the advantages of ray tracing method and finite difference time-domain method (FDTD). The basic idea of the hybrid method is introduced, and the modeling steps of the hybrid method are given. The ray-tracing method is used to analyze the open area, but for the region with complex discontinuity, which can not be accurately predicted by the ray tracing method, The finite difference time domain (FDTD) method is used to analyze the problem. In this paper, the distribution of the field strength of the received signal along with the distance under the emulation environment of 60 GHz, indoor and outdoor to indoor simulation environment, and the time delay information of the received signal at a certain fixed point are discussed. The simulation results show that the accuracy of the hybrid method is higher than that of the ray-tracing method in complex environment, and the computational complexity of the hybrid method is less than that of the finite-difference time-domain method. It is shown that the hybrid method is an effective method and can accurately predict the propagation characteristics of millimeter wave.
【作者单位】：东北电力大学信息工程学院;
【分类号】：TN928

【参考文献】