施云涛, 王玮, 蔡伟明. Research of TD-LTE reconstruction strategy for indoor distribute system based on active antenna[J]. 2012, 25(7): 41-44. DOI: 10.13992/j.cnki.tetas.2012.07.002.
Research of TD-LTE reconstruction strategy for indoor distribute system based on active antenna
摘要
本论文针对已有传统室内分布系统但双路改造难度较大的场景采用室分有源天线改造方案
该方案在RRU输出端利用控制器将两路LTE信号无损合并
合并后的信号通过原有的分布系统传输到室分天线
在天线前加装一个有源模块
该模块将原有的两路信号分离
并通过双极化天线发射出去
实现TD-LTE完整的MIMO特性。由于该方案无需新增一路通道便可实现完整的MIMO特性
大大降低了物业协调难度和工程改造量。
Abstract
In this paper
a technology of active antenna in indoor distribute system is used
a controller combines two signal in output of RRU
the combining signal transmission in indoor distribute system
an active module is installed in front of antenna
the module separates two signal which will be transmitted by the dualpolarized antenna.The scheme which reduces the engineered can implement MIMO technology without another channel.