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TD中的智能天線和LTE中的MIMO有何區(qū)別，能否融合？

提問者: elocutionist 提問時間: 2009-01-13

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智能天線通常也稱作自適應天線陣列，可以形成特定的天線波束，實現(xiàn)定向發(fā)送和接收，主要用于完成空間濾波和定位。從本質(zhì)上看，它利用了天線陣列中各單元之間的位置關系，即利用了信號的相位關系克服多址干擾及多徑干擾，這是它與傳統(tǒng)分集技術(shù)的本質(zhì)區(qū)別。

　　MIMO系統(tǒng)是指在發(fā)射端和接收端同時使用多個天線的通信系統(tǒng)，其有效地利用隨機衰落和可能存在的多徑傳播來成倍地提高業(yè)務傳輸速率。其核心技術(shù)是空時信號處理，即利用在空間中分布的多個時間域和空間域結(jié)合進行信號處理。因此，可以被看作是智能天線的擴展。

智能天線可以理解為對天線應用與今后演進的LTE（MIMO的雙天線），這樣今后中國移動發(fā)展LTE時，現(xiàn)有的智能天線仍然可以使用 <span style='display:none'>1%$#(*$#什21K:JFD()$#_*(本文來自移動通信網(wǎng)m.gg1fic3.cn,版權(quán)所有</span><br><span style='display:none'>4f8e34K:JFD(本文來自移動通信網(wǎng)m.gg1fic3.cn,版權(quán)所有</span><br> </div> <br /> <div id="wohy872" class="f13 gray" align="left"> 回答者： <a href="./member.php?uid=66718" target="_blank"><u>tigermarx</u></a> 回答時間：<span id="uxq37zs" class="greenBG">2009-01-13 17:28</span> </div> <br /> <a href="javascript:;" onclick="dl()"> <img src="./images/ding.gif" border="0" width="24" height="24" align="absmiddle" /> 3</a> <a href="javascript:;" onclick="dl()"> <img src="./images/cai.gif" width="24" height="24" border="0" align="absmiddle" /> 0 </a> <a href="javascript:;" onclick="dl()">  <br /> <div id="3pqkc3f" class="f12"> <hr size=1 color="#cccccc" width="99%"> </div> </div> </div> <div class="gm82y3k" id="footerad" style="width:100%;border:#CCCCCC 1px solid;"> <script type="text/javascript"> var cpro_id = "u1940304"; 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