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重庆邮电大学
毕业设计(论文)
设计(论文)题目:
基于Matlab的cdma2000前向业务信道仿真
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填表时间: 2013 年 6月
重庆邮电大学教务处制
摘要
在我们的日常生活中,移动通信扮演着相当重要的角色。随着互联网时代的到来,第二代移动通信系统已经不能满足人们的生活需求。同时,第三代移动通信系统的相关技术也应运而生。
本文的研究对象是cdma2000系统,目的在于理解cdma2000前向业务信道的实现过程。前向业务信道不仅用于传送用户业务数据,同时也传送信令信息。该信道包含有业务数据和功率控制子信道,前者传送用户信息和信令信息,后者用于传送功率控制信息。前向业务信道的信号需要经过以下几个步骤:卷积编码、符号重复、交织、数据加扰和Walsh码扩频。
此次仿真中,通过对cdma2000业务信道仿真进行了程序代码编写,完成相关模块及整个前向业务信道流程的仿真。此次仿真,加深了我对前向业务信道的理解,也为相关的通信信道仿真提供了一定的参考价值。
【关键词】cdma2000系统前向业务信道仿真
ABSTRACT
In our daily life, munications play a very important role. With the advent of the era of , the second generation munication system already cannot satisfy the demand of people's lives. At the same time, the relevant technology of the third generation munication system also arises at the historic moment.
This article's research object is cdma2000 forward traffic channel. The purpose of our study is to understand cdma2000 system before implementation process to the business channel. Forward Traffic Channel is used to transmit the user not only business data, but also transmit signaling information. The channel contains business data and power control sub-channels, which transmit the user information and signaling information, which is used to transmit power control information . Forward traffic channel signal takes the following steps: repeated convolution coding, symbols, interleaving, scrambling and Walsh code spread spectrum data.
This simulation, based on cdma2000 service channel simulation has carried on the Matlab code is written, pleting the related modules, and the whole process simulation to the business channel. The simulation deepened my understanding of business channel, prior to performance, as well as the relevant simulation provides a certain reference value.
【Key words】cdma2000 Forward Traffic Channel simulation
目录
前言 1
第一章 cdma2000概述 2
第一节 cdma2000标准演进 2
第二节 cdma2000系统优势 3
第三节课题研究内容及方法 4
第四节本章小结 5
第二章 cdma