基于多墙环境的IEEE802.11室内传播模型研究与仿真

Research and simulation of indoor propagation model based on multi-wall environment for IEEE802.11 Networks

为了保证室内无线网络的通信质量,需要对建筑物进行合理的网络部署规划,其中一个有效的方法就是建立信道仿真系统。本文针对一个具体的建筑物内部三维环境,提出了一种改进的多墙模型,并将该模型同多墙模型以及JCT室内损耗模型进行比较,发现改进多墙模型有更好的效果。接着,基于此改进多墙模型,文章设计了一款无线设备布置仿真软件。该软件在MATLAB平台上搭建而成,它以图形用户界面接口的形式实现了室内三维空间中信号覆盖强度的分析与显示,同时可在室内选取一个或多个特定位置点进行信号强度的计算。

To ensure the communication quality of wireless system in indoor environments, it is essential to make a reasonable network deployment.An effective method for it is to build a channel simulation system.In the paper, an improved multi-wall model was proposed for a specific 3D environment of a building and a comparison study of improved multi-wall model, multi-wall model and JCT indoor loss model was given.The study results show that the multi-wall model presents the best effect for the specific indoor environment.Then a simulation software for wireless device layout based on the improved multi- wall model on the platform of MATLAB was designed.The software provides a graphical user interface, and realizes analysis and display of signal coverage intensity in 3D space.Meanwhile, it provides the function of signal intensity calculation for some specific points within buildings.