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请问下,为什么有些基站的每个小区有两个天线
提问者:mervynyoung   |  提问时间:2011-8-12 13:07
请问下,为什么有些基站的每个小区有两个天线
关闭所有答案回应     最佳答案
pxl888 (技术员二级)  的答案    ( 采纳时间:2012-5-6 17:08 )
不一定都是2个天线的 这个是有容量决定的,跟TRU的个数有关,并且相同的TRU用CDU-C+ 和CDU-D的个数是不一样的,这就造成天线个数是不一样的。
之前有个提问的
对于10/10/10容量配置的基站,如果使用分别使用CDU-C+及CDU-D,则各需要多少付单极化天线( 答案是18和6)
回应该答案 (1)  |  回答时间:2011-8-13 10:52
该答案得到 1 个回应   我要回应
mervynyoung  |  2012-5-6 17:08
谢谢,我没什么积分
其他答案 ( 6 条 )
这个由容量决定,也可以理解为由载频数目决定,如果容量高的话,或者说需要的载频数目多,就会有双极化天线来支撑容量
回应该答案 (0)  |  回答者:微光贝贝   |  2011-8-12 13:29
空间分集,复用多径原理,可以带来增益,提高容量
回应该答案 (0)  |  回答者:tjhwa   |  2011-8-12 13:31
不一定是两个啊,也许一个或更多。
回应该答案 (0)  |  回答者:张延考   (技术员二级)  |  2011-8-12 16:09
要看天线的种类,是单极化天线还是双极化天线?还要看拥到什么网络?GSM?WCDMA?TD?天写的接口数是不同的,主要使用原理同意楼上的,空间分集,复用多径原理,可以带来增益,提高容量,收发分级,空间分集,复用多径,多路接受,等等公用很多。
回应该答案 (3)  |  回答者:DONGJIE999   |  2011-8-18 17:05
该答案得到 3 个回应   我要回应
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像海面站,就有双发双收的天线
回应该答案 (0)  |  回答者:XIAOMUWU   |  2011-9-27 12:03
路过,学习下。。。。。
回应该答案 (0)  |  回答者:hcj34   |  2011-12-29 10:42
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