大气波导通信技术对TD-LTE产生的干扰及优化方案研究

Study on the Interference and Optimization of TD-LTE by Atmospheric Waveguide Communication Technology

大气波导是一种由于对流层中存在逆温或水汽随高度急剧变小的层次,在该层中超短电波形成超折传播,使得大部分电磁波被限获在这一层内传播的现象,发生大气波导传播以后,使TD-LTE网络超出了TDD系统的上下行保护间隔致使产生远距离同频干扰,造成用户不能与系统实现同步,导致用户注册不成功或者用户掉线,严重影响客户感知,本文对大气波导现象形成进行了分析,以及对TD-LTE的干扰特性进行说明,介绍了几种规避方案,并进行优劣对比。

Atmospheric duct is a sharp decrease with height due to the inversion or water vapor in the troposphere levels in super fold spread form the layer of ultrashort wave,making the most of the electromagnetic wave is limited by spreading a layer of the phenomenon,after the occurrence of atmospheric duct propagation,the TD-LTE network beyond the TDD system.The interval distance downside protection resulting in same frequency interference caused by synchronization of user and system can lead to success or not,the user registered users dropped,seriously affect the customer perception,this paper analyzed the formation of atmospheric duct phenomenon,and interference characteristics of TD-LTE are described,introduces several mitigation programs,and compared the.