【正文】 Mobile TelemunicationsAdvanced are anticipated. TDSCDMA standards and technologies will take a homemade evolution path in China, aiming at a smooth migration to the nextgeneration mobile munication system. This article provides a brief description of the evolution strategies of both the standards and key technologies, in which the evolution is divided into three phases. The state of the art of TDSCDMA evolution is surveyed, and its technologies and standards in different evolution phases are characterized. Single and multicarrier highspeed packet access is specified in the first evolution phase for guaranteeing the high transmission bit rate of packet services. Meanwhile, broadcast services are supported, and the HSPA evolution is also incorporated in this phase. Long Term Evolution is defined in the second evolution phase for approaching similar performance as mobile WiMAX, where channelreciprocitybased multiple antenna techniques are utilized. The last phase is the revolution to the IMTAdvanced system and being one alternative standard in beyond 3G systems,which is based on the evolution of TDLTE. The difference of standardizations between 3GPP and local standard releases are introduced. Some challenging work and open issues in different evolution phases are discussed as well. 【 Key words】 The Mobile Communication System Smooth Migration High Speed Packet Access Mobile WiMAX TDLTE 重慶郵電大學(xué)本科畢業(yè)設(shè)計(jì)（論文） III 目 錄 前 言 .................................................................................................................................................. 1 第一章 移動(dòng)通信系統(tǒng)概述 .............................................................................................................. 2 第一節(jié) 移動(dòng)通信的發(fā)展 歷史 ................................................................................................... 2 第二節(jié) 移動(dòng)通信技術(shù)發(fā)展的趨勢(shì)和特點(diǎn) ............................................................................... 3 一、 總體趨勢(shì) ........................................................................................................................ 3 二、 多種技術(shù)共存和融合是大勢(shì)所趨 ................................................................................ 4 第 三 節(jié) 本章小結(jié) ....................................................................................................................... 4 第二 章 2G 到 4G 各自典型制式簡(jiǎn)介 ............................................................................................. 5 第一節(jié) GSM 移動(dòng)系統(tǒng)簡(jiǎn)介 ..................................................................................................... 5 一、 GSM 系統(tǒng)的發(fā)展歷史 .................................................................................................. 5 二、 GSM 系統(tǒng)的基本特點(diǎn) .................................................................................................. 6 三、 GSM 系統(tǒng)的組成 .......................................................................................................... 6 （ 3） 網(wǎng)絡(luò)交換子系統(tǒng) NSS ................................................................................................ 8 （ 4）操作維護(hù)子系統(tǒng) .......................................................................................................... 8 第二 節(jié) TDSCDMA 移動(dòng)通信系統(tǒng)簡(jiǎn)介 ................................................................................... 9 一、 TD 趨勢(shì) ......................................................................................................................... 9 第三節(jié) TDLTE 移動(dòng)通信系統(tǒng)簡(jiǎn)介 ...................................................................................... 10 一、 LTE 的初步需求 .......................................................................................................... 11 二、現(xiàn)有系統(tǒng)做出的相應(yīng)改變 .......................................................................................... 11 三、 LTE 作為準(zhǔn) 4G 主流通信技術(shù) ................................................................................... 12 第四節(jié) 本章小結(jié) ..................................................................................................................... 16 第 三 章 三種典型制式的物理層結(jié)構(gòu) ............................................................................................ 17 第一節(jié) GSM 系統(tǒng)物理層結(jié)構(gòu) ............................................................................................... 17 一、 GSM 系統(tǒng)技術(shù)規(guī)范 .................................................................................................... 17 二、 GSM 系統(tǒng)結(jié)構(gòu) .......................................................................................................... 18 第二節(jié) TDSCDMA 物理層結(jié)構(gòu) ........................................................................................... 24 一、物理層功能 .................................................................................................................. 24 二、物理層向上層提供的服務(wù) .......................................................................................... 25 三、物理信道 ...................................................................................................................... 26 四、傳輸信道與物理信道的映射關(guān)系 .............................................................................. 30 五、物理層的信道編碼、復(fù)用、擴(kuò)頻、調(diào)制 .................................................................. 31 重慶郵電大學(xué)本科畢業(yè)設(shè)計(jì)（論文） IV 六、編碼組合傳輸信道（ CCTrCH） ............................................................................... 35 七、物理過(guò)程 ....................................................................................................................... 36 第三節(jié) TDLTE 物理 層結(jié)構(gòu) .................................................................................................. 41 一、時(shí)域的總體結(jié)構(gòu) .......................................................................................................... 41 二、下行鏈路傳輸方案 ...................................................................................................... 42 三、 上行傳輸方案 .......................................................................