TD-SCDMA網(wǎng)絡(luò)中的干擾問(wèn)題分析及優(yōu)化機(jī)制研究(含開題+任務(wù)書)


頁(yè)數(shù)：49 字?jǐn)?shù)：17137


摘 要
本文先介紹TD-SCDMA的發(fā)展歷程，再熟悉TD系統(tǒng)的基礎(chǔ)上了解TD-SCDMA的關(guān)鍵技術(shù)。接著對(duì)干擾問(wèn)題的分析方法做了細(xì)致的分析。文章接著研究了網(wǎng)絡(luò)的優(yōu)化機(jī)制，最后用案例分析做細(xì)致的分析和總結(jié)。TD-SCDMA（時(shí)分同步碼分多址，Time Division Synchronous Code Division Multiple Access）是一項(xiàng)由我國(guó)提出來(lái)的通信標(biāo)準(zhǔn)，在物理層核心技術(shù)上擁有自主知識(shí)產(chǎn)權(quán)。目前在多個(gè)大型城市建立實(shí)驗(yàn)網(wǎng)，實(shí)驗(yàn)結(jié)果優(yōu)勢(shì)突出。但由于自身的特點(diǎn)也存在一定的問(wèn)題，例如不同制式系統(tǒng)的鄰頻干擾、時(shí)隙干擾等問(wèn)題，有些系統(tǒng)自身可以克服的，如多址干擾，但有些如與PHS系統(tǒng)共存問(wèn)題，就需要在網(wǎng)絡(luò)規(guī)劃、優(yōu)化中根據(jù)實(shí)際情況采用不同方法解決。無(wú)論哪種制式系統(tǒng)，干擾一定存在，只是干擾類型不同而已，作者將著重分析TD-SCDMA的干擾問(wèn)題，以及討論網(wǎng)絡(luò)優(yōu)化方法。所以本文就有別于其他系統(tǒng)干擾問(wèn)題進(jìn)行分析提高該系統(tǒng)的運(yùn)營(yíng)質(zhì)量。
TD-SCDMA系統(tǒng)雖然采用了多項(xiàng)核心技術(shù)，克服了許多其他制式系統(tǒng)無(wú)法克服的干擾，例如符號(hào)間干擾和多址干擾，但其本身也有一些缺點(diǎn)，如系統(tǒng)內(nèi)部干擾復(fù)雜、時(shí)隙業(yè)務(wù)動(dòng)態(tài)分配出現(xiàn)交叉時(shí)隙干擾等。現(xiàn)階段，各種系統(tǒng)外和系統(tǒng)內(nèi)的干擾對(duì)TD-SCDMA網(wǎng)絡(luò)性能造成了較為嚴(yán)重的影響，因此，干擾的優(yōu)化成為了TD-SCDMA無(wú)線網(wǎng)絡(luò)優(yōu)化工作中的一個(gè)重要環(huán)節(jié)。本文首先對(duì)TD-SCDMA系統(tǒng)作詳細(xì)分析，在熟悉系統(tǒng)關(guān)鍵技術(shù)的基礎(chǔ)上，來(lái)分析TD-SCDMA的網(wǎng)絡(luò)干擾問(wèn)題接著分析網(wǎng)絡(luò)的優(yōu)化機(jī)制。最后通過(guò)具體的優(yōu)化案例對(duì)TD-SCDMA網(wǎng)絡(luò)的干擾優(yōu)化做了進(jìn)一步的分析。

【關(guān)鍵詞】：TD-SCDMA 網(wǎng)絡(luò)優(yōu)化 干擾



Abstract
This article first describes the development process of TD-SCDMA, TD-familiar system based on the understanding of the key TD-SCDMA technology.Then the analysis of the interference made detailed analysis.Research paper then the network optimization mechanisms, and finally to do detailed case study analysis and summary.TD-SCDMA (Time Division Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) is a proposed communication by our standards, in the physical layer core technology with independent intellectual property rights. Currently several large cities in the experimental network, the experimental results highlight the advantages. However, there are some features of its own problems, such as adjacent channel interference of different standard systems, slot interference and other issues, some of the system itself can be overcome, such as multi-access interference, but some, such as coexistence with the PHS system, we need to network planning, optimization based on the actual situation of different solutions. Whatever the standard system, interference must exist, but a different type of interference, the author analyzes the TD-SCDMA will be interference problems, and discuss methods of network optimization. So this is different from other systems on the interference analysis to improve the quality of the system's operation.
TD-SCDMA system, although a number of core technologies used to overcome a number of other standard system can not overcome the interference, such as ISI and multiple access interference, but it also has some disadvantages, such as interference within the system complex, dynamic allocation of slot operations there cross-slot interference. This stage, the various systems and systems outside interference within the TD-SCDMA network performance impact of causing more serious, therefore, interfere with the optimization has become a TD-SCDMA wireless network optimization is an important part of the work. This article first TD-SCDMA system for detailed analysis of key technologies in a familiar system, based on years of TD-SCDMA network interference and then analyze the network optimization mechanisms. Finally, the optimization of the specific case of the TD-SCDMA network interference optimization done further analysis.

【Keywords】：TD-SCDMA Network Optimization Interference


目 錄

前 言 1
第一章TD-SCDMA系統(tǒng)概述 2
第一節(jié) 移動(dòng)通信的發(fā)展歷程 2
第二節(jié) TD-SCDMA系統(tǒng)的基本特點(diǎn) 4
第三節(jié) TD-SCDMA的關(guān)鍵技術(shù) 5
第二章 干擾的分類 12
第一節(jié) 干擾的基本原理 12
第二節(jié) ．TD-SCDMA網(wǎng)絡(luò)中干擾的分類 13
第三章 ．干擾的分析方法與優(yōu)化 15
第一節(jié)．干擾的分析方法 15
第二節(jié) 干擾的優(yōu)化方法 18
第四章 干擾案例分析 21
第一節(jié) 干擾情況分析 21
第二節(jié) 干擾源定位 22
第五章 總結(jié)與展望 26
致 謝 27
參考文獻(xiàn) 28