td-scdma网络中的干扰问题分析及优化机制研究(含开题+任务书).doc

TD-SCDMA网络中的干扰问题分析及优化机制研究(含开题+任务书)


页数：49 字数：17137


摘 要
本文先介绍TD-SCDMA的发展历程，再熟悉TD系统的基础上了解TD-SCDMA的关键技术。接着对干扰问题的分析方法做了细致的分析。文章接着研究了网络的优化机制，最后用案例分析做细致的分析和总结。TD-SCDMA（时分同步码分多址，Time Division Synchronous Code Division Multiple Access）是一项由我国提出来的通信标准，在物理层核心技术上拥有自主知识产权。目前在多个大型城市建立实验网，实验结果优势突出。但由于自身的特点也存在一定的问题，例如不同制式系统的邻频干扰、时隙干扰等问题，有些系统自身可以克服的，如多址干扰，但有些如与PHS系统共存问题，就需要在网络规划、优化中根据实际情况采用不同方法解决。无论哪种制式系统，干扰一定存在，只是干扰类型不同而已，作者将着重分析TD-SCDMA的干扰问题，以及讨论网络优化方法。所以本文就有别于其他系统干扰问题进行分析提高该系统的运营质量。
TD-SCDMA系统虽然采用了多项核心技术，克服了许多其他制式系统无法克服的干扰，例如符号间干扰和多址干扰，但其本身也有一些缺点，如系统内部干扰复杂、时隙业务动态分配出现交叉时隙干扰等。现阶段，各种系统外和系统内的干扰对TD-SCDMA网络性能造成了较为严重的影响，因此，干扰的优化成为了TD-SCDMA无线网络优化工作中的一个重要环节。本文首先对TD-SCDMA系统作详细分析，在熟悉系统关键技术的基础上，来分析TD-SCDMA的网络干扰问题接着分析网络的优化机制。最后通过具体的优化案例对TD-SCDMA网络的干扰优化做了进一步的分析。

【关键词】：TD-SCDMA 网络优化 干扰



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 录

前 言 1
第一章TD-SCDMA系统概述 2
第一节 移动通信的发展历程 2
第二节 TD-SCDMA系统的基本特点 4
第三节 TD-SCDMA的关键技术 5
第二章 干扰的分类 12
第一节 干扰的基本原理 12
第二节 ．TD-SCDMA网络中干扰的分类 13
第三章 ．干扰的分析方法与优化 15
第一节．干扰的分析方法 15
第二节 干扰的优化方法 18
第四章 干扰案例分析 21
第一节 干扰情况分析 21
第二节 干扰源定位 22
第五章 总结与展望 26
致 谢 27
参考文献 28