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	<div class="tt">移动通讯技术简介</div>
	<div class="txt2 txtimg"><p><span style="color: rgb(255, 0, 0); font-size: 24px;"><strong>移动通讯带来的改变</strong></span></p><p><br/></p><p>我们生活在一个互联网和智能手机的时代，大家对2G/3G/4G/5G网络并不陌生.但是很多人对这些概念认识估计就不是很清楚.简单科普一下吧&nbsp; &nbsp;2G/3G/4G/5G，这里的G,指的是Genaration，也就是“代”的意思. 其中这里的2G/3G/4G定义，主要是区别于业务类型，速率，传输时延还有各种切换成功率角度给出具体实现的技术不同.而5G NR的更是专注下面三大项目发展</p><p><span style="color: rgb(255, 0, 0);">●</span>增强型行动宽带(eMBB)</p><p><span style="color: rgb(255, 0, 0);">●</span>超可靠低延迟(uRLLC)</p><p><span style="color: rgb(255, 0, 0);">●</span>大规模机器类型通讯(mMTC)</p><p><br/></p><hr/><p><span style="color: rgb(255, 0, 0);"><strong>移动通讯常见的测试项目</strong></span></p><p><span style="color: rgb(255, 0, 0);">●</span>最大发射功率</p><p><span style="color: rgb(255, 0, 0);">●</span>发射频谱</p><p><span style="color: rgb(255, 0, 0);">●</span>发射杂散</p><p><span style="color: rgb(255, 0, 0);">●</span>发射最小功率</p><p><span style="color: rgb(255, 0, 0);">●</span>接收邻近通道选择</p><p><span style="color: rgb(255, 0, 0);">●</span>接收阻塞</p><p><span style="color: rgb(255, 0, 0);">●</span>接收杂散响应</p><p><span style="color: rgb(255, 0, 0);">●</span>接收互调特性</p><p><span style="color: rgb(255, 0, 0);">●</span>接收杂散</p><p><span style="color: rgb(255, 0, 0);">●</span>接收参考灵敏度</p><p><span style="color: rgb(255, 0, 0);">●</span>发射邻近通道泄漏功率</p><p><br/></p><p><strong><span style="color: rgb(255, 0, 0);">移动通讯射频所需认证领域&nbsp;</span></strong></p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301 511/ETSI TS 151.010 /3GPP TS 51.010</p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301908-2/ETSI TS 134.121-1/3GPP TS 34.121-1</p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301908-13/ETSI TS 136.521-1/3GPP TS 36.521-1</p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301908-25/ETSI TS 138.521-1/3GPP TS 38.521-1</p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301908-25/ETSI TS 138.521-2/3GPP TS 38.521-2</p><p><span style="color: rgb(255, 0, 0);">●</span>EN 301908-25/ETSI TS 138.521-3/3GPP TS 38.521-3</p><p><span style="color: rgb(255, 0, 0);">●</span>PLMN01/PLMN08/PLMN10/PLMN11</p><p><span style="color: rgb(255, 0, 0);">●</span>FCC Part 22H/Part 24E/Part 27/Part 90/Part 96</p><p><span style="color: rgb(255, 0, 0);">●</span>AS/CA S042.1&nbsp;</p><p><span style="color: rgb(255, 0, 0);">●</span>AS/ACIF S042.3&nbsp;</p><p><span style="color: rgb(255, 0, 0);">●</span>AS/CA S042.4</p><p><br/></p></div>
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