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1、第頁I移動通信室內分布系統(tǒng)的分析與設計移動通信室內分布系統(tǒng)的分析與設計摘要摘要:根據最新統(tǒng)計,在第三代通信網絡中大約75%以上的話務量是發(fā)生在室內的,且其增值業(yè)務也絕大多數也發(fā)生在室內。所以移動運營商品牌形象將重要體現在3G室內覆蓋上面,這也是運營商吸引更多用戶的重要因素。從GSM網絡優(yōu)化理論來看,為了在高層建筑物內保證無線信號的連續(xù)覆蓋,建立分布式系統(tǒng)是必要的。本文將主要從室內分布系統(tǒng)的技術指標,設計原則,勘測原則,設計依據等幾個方面
2、來系統(tǒng)的介紹室內分布系統(tǒng)的設計要點和技術要求。本文主要解決的問題是在復雜情況下對直放站信源選取上的標準和實際調測中的問題的解決。設計的依據和要求主要是參考中國移動2007年印發(fā)的《TDSCDMA室內覆蓋工程技術方案指導原則》以及中國聯通2008年《WCDMA室內覆蓋》的施工設計要求來完成的。以六安市白云商廈為實施對象進行的設計。這次設計中主要考慮覆蓋的形式,電磁環(huán)境的測量,技術方案的實施,以及對設計方案分析話務量分析,切換掉話分析,下行
3、增益的確定,上行噪聲分析,上下行平衡分析等有關數據的測試和系統(tǒng)的設定。為以后的類似的設計提供了借鑒的模版。關鍵字關鍵字:噪聲,功率,增益,直放站第頁III目錄前言...........................................................................................................................................
4、........................1第一章移動通信室內分布系統(tǒng)的定義與要求.......................................................................................................31、室內分布式系統(tǒng)類型定義...........................................................
5、................................................................31.1射頻有源分布系統(tǒng)...............................................................................................................................31.2射頻無源分布系統(tǒng).....
6、.........................................................................................................................31.3泄漏電纜分布系統(tǒng).......................................................................................
7、........................................41.4光纖分布系統(tǒng).......................................................................................................................................52、網絡性能指標定義........................
8、...............................................................................................................63、信源方式的選取...................................................................................................
9、........................................73.1、信源選取要求....................................................................................................................................73.2、不同信源對機房的要求......................
10、..............................................................................................93.3、分布系統(tǒng)的選取..................................................................................................................
11、..............93.4、綜合選取信源方式與分布系統(tǒng)......................................................................................................104、無源器件及有源設備指標.......................................................................
12、..................................................114.1、干線放大器的選取..........................................................................................................................114.2、無源器件的選取.....................
13、.........................................................................................................115分布系統(tǒng)技術指標........................................................................................................
14、...............................115.1、室內分布系統(tǒng)設計技術指標應滿足以下要求:..........................................................................115.2、天饋線系統(tǒng)的駐波比要求........................................................................
15、......................................125.3、天線端口的最大發(fā)射功率..............................................................................................................125.4、室內信號的外泄電平........................................
16、..............................................................................125.5、上下行鏈路平衡..............................................................................................................................12第
17、二章設計實例.....................................................................................................................................................121、概述...........................................................
18、..................................................................................................121.1、自然環(huán)境................................................................................................................
19、..........................121.2、電磁環(huán)境..........................................................................................................................................132、技術方案......................................
20、...............................................................................................................142.1各種相關文件標準................................................................................................
21、.............................142.2邊緣場強.............................................................................................................................................152.3設計技術指標..............................
22、.......................................................................................................152.4模擬測試............................................................................................................
23、.................................153、設計思路.....................................................................................................................................................153.1施主天線位置的確定................
24、.........................................................................................................153.2信源的確定.........................................................................................................
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