毕业论文cdma无线网络优化.doc

摘要
通信技术的发展日新月异,移动业务蓬勃发展已经渗入了人们生活的方方面面,给人们生活带来了极大便利。随着移动网络的发展, CDMA无线网络建设规模逐渐扩大,它提供的各类业务在信号质量、安全性、功耗和可靠性等方面都表现出很强的技术优势。
但随着CDMA无线网络中用户的飞速上涨,网络的不断扩容,原有的网络设计及结构改变、话务量不断增加直接影响着CDMA无线网络的质量。因此CDMA无线网络进行优化就非常重要。
本文介绍了CDMA无线网络的基本原理,分析了目前CDMA无线网络现状,既原有网络由于话务量少基站建设少,现在话务提升,网络规模不断扩大,随之而来的网络规划,基站选址不合理,信号覆盖不好,或出现导频污染等降低网络质量的问题。本文结合实例,给出CDMA无线网络优化的系统流程,通过CQT测试和路测,网管话务统计,对网络关键指标如呼叫接通率、信道阻塞率、掉话率等进行了详细分析,找到了问题产生的原因,提出了解决问题的方法,从而提高了网络的服务质量。
关键字:移动通信;CDMA;网络规划;网络优化
Abstract
The rapid development munication technology, mobile services have been booming into every aspect of people's lives, it has brought great convenience to people's lives. With the development of works, CDMA work gradually expanded the scale of construction, which provides various services of business in the signal quality, safety, reliability, power consumption and have shown a strong technological advantage.
But with the users of CDMA work increase, the continuous expansion of work, the design and structure of the work changes, increasing traffic that directly affect the quality of the CDMA work. Therefore, optimizing the CDMA work is very important.
This article describes the basic principles of CDMA works, analyze of the current status of CDMA works, which is work traffic fewer, less base stations, but now traffic enhancing, network size expanding and followed by work planning and base station location unreasonable, poor signal coverage, or pilot frequency pollution and work quality issues. In this paper, examples are given, and it describes CDMA work optimization processes. By CQT test and road test, network traffic statistics, and analyzing the key targets such work call connection rates, the channel blocking rate, call drop rate, we have found the cause of the problems, proposed solutions to problems, thereby work quality of service has been improved.
Keyword : munication; CDMA; Network planning; Network optimization
目录
第1章绪论 6
引言 6
国内外发展现状 7
CDMA网络优化规划与优化面临挑战 8
第2章 CDMA原理及关键技术 9