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近年来,随着移动通信的发展,对于频谱资源利用率的要求越来越高,从而使微蜂窝、微微蜂窝系统得到了广泛应用,这些系统的小区不再符合统计相似关系.使用射线跟踪模型分析了渥太华市区的无线信道分布情况.在寻找收发机之间的传输路径时采用了量化射线追踪与虚拟镜像源树两种算法.在此基础上建立等效基带分析模型,用统计学的方法研究各传输路径的信号干涉问题.最后,利用射线跟踪模型中得到的路径信息,用数值分析的方法验证了模型的正确性.
In recent years, with the development of mobile communication, the requirements for the utilization of spectrum resources are getting higher and higher, so that the micro-cell and the pico-cell system have been widely used, and the cells of these systems no longer meet the statistical similarity relationship.Using ray tracing model This paper analyzes the distribution of wireless channel in downtown Ottawa.When looking for the transmission path between the two transceivers, we use two methods: quantitative ray tracing and virtual image source tree algorithm.An equivalent baseband analysis model is established based on this, Method to study the signal interference problem of each transmission path.Finally, the correctness of the model is verified by numerical analysis using the path information obtained from the ray-tracing model.