LMDS固定无线接入网的网络设计

在分析LMDS(Local Multi-point Distribution Service)固定无线接入系统的一般构架、组网和频率配置原则的基础上,通过对系统容量、组网、覆盖范围、链路预测和频率规划,特别是对扩容、组网方案、自由空间损耗模型、雨衰等与无线网络设计有关内容及实例的分析,讨论了无线网络设计的主要概念和无线电波传播的特点,给出了一个适合于新的无线宽带通信业务接入网的设计方法.该方法对未来固定宽带无线接入系统的网络规划、工程设计和工程建设具有一定的指导意义.

Network design of LMDS fixed wireless access network

The technology of broadband wireless access at present has become the focus of people's attention. The common frame and principle of network organizing and frequency collocating of LMDS(Local Multi-point Distribution Service) fixed wireless access systems was introduced. The concepts of wireless network design and the characteristics of radio wave transmission were discussed, and the design method for wireless broadband communication service access network was given by thoroughly analyzing the system capacity, mode of network organizing, coverage area, chain forecasting, frequency planning, and other related contents about wireless network design, especially the expanded capacity and upgrade, scheme of network organizing, model of attenuation in the free space, rainy attenuation, and illustrating the practice example, This paper has a certainty guide significance to the network planning, project design, project construction of fixed broadband wireless access systems.