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射线跟踪方法是研究室外微蜂窝小区电波传播的有效方法。基于入射及反弹射线法/镜像法对室外微小区环境中3.5GHz电波传播的路径损耗进行了仿真和分析,仿真结果与文献所给的结果一致性良好,验证了该方法的正确性。提出了一种新型的射线管判收方法,可有效判断到达接收机的所有射线管。分析了仿真中得到的接收功率、均方根时延扩展、波达方向等传播参数,并比较了视距传播(LOS)和非视距传播(NLOS)的传播特性,这些分析结果可为3.5GHz频段无线通信系统的覆盖提供相应的理论依据。
Ray tracing method is an effective method to study the radio propagation in outdoor microcells. The path loss of 3.5GHz radio propagation in outdoor microcell environment is simulated and analyzed based on incident and rebound ray method and image method. The simulation results are in good agreement with the results given in the literature, and the correctness of the method is verified. A new method of ray tube detection is proposed, which can effectively judge all the ray tubes arriving at the receiver. The propagation parameters such as received power, root mean square delay spread and direction of arrival in the simulation are analyzed and the propagation characteristics of LOS and NLOS are compared. The results of these analyzes are 3.5 GHz band wireless communication system coverage provide the appropriate theoretical basis.