LMDS系统雨衰特性研究  

The Characteristic Analysis of Rain Attenuation in LMDS System

作　　者：赵庆平[1] 耿博[1] 张朋[2] 

机构地区：[1]淮北煤炭师范学院物理与电子信息学院,安徽淮北235000 [2]淮北煤炭师范学院信息学院,安徽淮北235000

出　　处：《淮北煤炭师范学院学报（自然科学版）》2009年第3期25-28,107,共4页Journal of Huaibei Coal Industry Teachers College(Natural Science edition)

摘　　要：部署LMDS系统的目的在于突破对高速接入的限制,为最后1km带来高容量及传输多种业务的能力,针对LMDS系统在传播路径中信号由于频率的升高而导致降雨衰落加大,分析雨衰的计算方法并对雨衰与距离和雨衰与降雨强度的关系进行了仿真,提出有效的抗雨衰方法,将其对系统链路信号质量的影响降到最低,对下一步LMDS系统规划和软件开发具有重要意义.The purpose of the deployment of LMDS systems is to break through the restrictions on high - speed access, which bring high capacity and the capacity of transmising a variety of business activities for last mile. As to the dissemination of LMDS system in the signal path as a result of the increased frequency of decline caused by increased rainfall, this paper give analysis of the methods of calculation for rain attenuation and give the simulation of the relationship between rain attenuation and the distance and the relationship between rain attenuation and rainfall intensity, propose an effective method of Rain Fade , minimize the impact of the quality of the system link signal. It has a great importance for the next step of planning of LMDS system and software development.

关 键 词：LMDS 雨衰 抗雨衰 

分 类 号：TN915.6[电子电信—通信与信息系统]