解析如下:
1、WCDMA 是英文Wideband Code Division Multiple Access(宽带码分多址)的英文简称,是一种第三代无线通讯技术。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0bd162d9f2d3572c0f96571a8113632763d0c384?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、WCDMA的Band就是3G无线通讯技术占据的频段范围。可见下表:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0823dd54564e92584b0a4c289782d158ccbf4e3e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、各频段上下行的频率区间可见下表:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/3c6d55fbb2fb43164015b0bc2ba4462308f7d3ea?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、在中国和大部分欧洲国家都使用I号频带,即核心工作频段:上行1920MHz~1980MHz、下行2110MHz~2170MHz。5MHz的频带带宽,200kHz的频率间隔,即各运营商如果同时使用WCDMA的频率,中心频点至少要间隔200kHz。