mimo信道模型的實(shí)現(xiàn)畢業(yè)論文-資料下載頁(yè)
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【正文】 參考文獻(xiàn) [1] 3GPP, TS , “Evolved Universal Terrestrial Radio Access (EUTRA)。 Physical Channels and Modulation (Release 8)”. [2] 袁崇義 . Petri 網(wǎng)原理 . 北京：電子工業(yè)出版社 . 1998. [3] 李建中 , 李金寶 , 石勝飛 . 傳感器網(wǎng)絡(luò)及其數(shù)據(jù)管理的概念、問(wèn)題與進(jìn)展 . 軟 件學(xué)報(bào) . 2020, 14(10): 17171727. [4] Snyder A.. Encapsulation and Inheritance in ObjectOriented Programming Languages. In Proceedings of Annual ACM SIGPLAN Conferences on ObjectOriented Programming, Systems, Languages, and Applications (OOPSLA’86). 1986. 3845. [5] Goguen J. A.. Parameterized Programming. IEEE Transactions on Software Engineering. 1984, 10(5): 528543. [6] Online Computer Library Center, Inc. History of OCLC[EB/OL]. [202001 08]. 山東大學(xué)本科畢業(yè)設(shè)計(jì)論文 17 附錄 ：英文材料及譯文 英文材料可以是原文 pdf 文件粘貼到此處或 word 格式?。?！ Chapter3 System Architecture Based on 3GPP SAE Atte L228。nsisalmi and Antti Toskala When the evolution of the radio interface started, it soon became clear that the system architecture would also need to be evolved. The general drive towards optimizing the system only for packet switched services is one reason that alone would have set the need for evolution, but some of the radio interface design goals – such as removal of soft handover – opened up new opportunities in the architecture design. Also, since it had been shown by High Speed Packet Access (HSPA) that all radio functionality can be efficiently colocated in the NodeB, the door was left open for discussions of flatter overall architecture. Discussions for System Architecture Evolution (SAE) then soon followed the radio interface development, and it was agreed to schedule the pletion of the work in Release 8. There had been several reasons for starting this work, and there were also many targets. The following lists some of the targets that possibly shaped the oute the most: Functionally the UE is a platform for munication applications, which signal with the work for setting up, maintaining and removing the munication links the end user needs. This includes mobility management functions such as handovers and reporting the terminals location, and in these the UE performs as instructed by the work. Maybe most importantly, the UE provides the user interface to the end user so that applications such as a VoIP client can be used to set up a voice call. 山東大學(xué)本科畢業(yè)設(shè)計(jì)論文 18 當(dāng)無(wú)線空中接口的演進(jìn)啟動(dòng)時(shí)，人們意識(shí)到系統(tǒng)架構(gòu)的演進(jìn)同樣是必須的。優(yōu)化設(shè)計(jì)僅提供分組交換服務(wù)的系統(tǒng)本身已足以成為系統(tǒng)結(jié)構(gòu)演進(jìn)的理由，此外一些無(wú)線空中接口的設(shè)計(jì)要求 —— 比如軟交換功能的 移除 —— 為系統(tǒng)架構(gòu)設(shè)計(jì)提供了新的機(jī)遇。另外， HSPA 已經(jīng)證明了所有的無(wú)線電相關(guān)功能均可有效地在NodeB 中實(shí)現(xiàn)，更為扁平化的整體系統(tǒng)架構(gòu)值得進(jìn)一步探討。 圍繞系統(tǒng)架構(gòu)演進(jìn) (SAE)的討論繼無(wú)線空中接口的討論進(jìn)行，與會(huì)者同意將這部分工作在 Release 8 中完成。啟動(dòng)這項(xiàng)工作有若干項(xiàng)理由和很多目標(biāo)。以下列出了可能對(duì)結(jié)果影響最大的一些目標(biāo)： 其中的許多目標(biāo)要求系統(tǒng)架構(gòu)的扁平化。含有更少節(jié)點(diǎn)的扁平系統(tǒng)架構(gòu)能夠減少延遲并改善性能。 Release 7 中已經(jīng)開(kāi)始了向這個(gè)目標(biāo)的努力，比如，直通隧道(direct tunnel)的概念允許用戶平層繞過(guò) SGSN；將 RNC 的功能集中到 NodeB 中。圖 展示了演進(jìn)的步驟，以及這些步驟在高層次的 SAE 架構(gòu)中的體現(xiàn)。 一些其它的目標(biāo)則要求系統(tǒng)架構(gòu)向完全不同的方向發(fā)展。比如，對(duì)與不同的無(wú)線接入網(wǎng)絡(luò)互聯(lián)進(jìn)行優(yōu)化，要求引入一系列新的功能，甚至可能需要引入新的接口，以分別支持各種網(wǎng)絡(luò)不同的協(xié)議。這些要求與簡(jiǎn)化系統(tǒng)架構(gòu)的要求不一致。因此，鑒于現(xiàn)實(shí)中這一架構(gòu)的鋪設(shè)很可能不必支持所有潛在可能的互聯(lián)場(chǎng)景， 3GPP 系統(tǒng)架構(gòu)規(guī)范被分為兩條路線 。
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