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pxl888 (技术员二级)
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( 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)
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
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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持容量
空间分集,复用多径原理,可以带来增益,提高容量
不一定是两个啊,也许一个或更多。
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。
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像海面站,就有双发双收的天线
路过,学习下。。。。。
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