文档介绍：摘要
扩频通信与常规的通信系统相比,具有很强的抗人为干扰,抗窄带干扰,抗多经衰落的能力,并具有信息隐蔽、多址保密通信等特点。从50年代中期开始到现在,扩频技术迅速发展,并得到了越来越广泛的应用,在通信、数据传输、信息保密等诸多方面显示了它极强的生命力。
SystemView是一种基于Windows平台对系统进行设计、仿真和分析的EDA软件。它采用图形编码方式,提供了广泛的分析环境,并可以和硬件的开发工具连接起来进行仿真。
本文主要讨论SystemView软件的应用及直接序列扩频通信的原理,并运用SystemView图形模块构建直接序列扩频系统,用分析窗和信号计算器对直接序列系统进行仿真和分析。
关键词
SystemView ; 扩频通信;直接序列扩频;仿真
Abstract
The spread spectrum(munication system has stronger ability of resisting jamming, narrow band, and multipath interference than that of the munication because of its lower transmitting power spectrum, it also has the characteristics of low probability intercept and multiple access munication. The SS technology has been developing rapidly and has more and prehensive applications from the middle of the 50’s to nowadays. It has shown strong vitality on the side munication, data transmission and munication.
SystemView is the leading Windows design , simulation and analysis software for Electronic Design Automaton . It features an intuitive block diagram interface ,provides prehensive analysis environment , and links to hardware development tools for simulation .
This thesis primarily discussed that a system of direct Sequence Spread Spectrum was designed , simulated and analysed within SystemView using token ,analysis window and sink calculator.
Keywords
SystemView ; Spread munication ; DSSS ; simulation
目录
摘要.......................................................................Ⅰ
Abstract...................................................................Ⅱ
第一章 SystemView的功能与使用简介 1
引言 1
SystemView 简介 1
SystemView的用户环境 2
图标库 2
系统定时 4
5
第二章扩频通信系统的基本理论 6
6
6
7
8
8
8
9
直扩系统的调制和解调 10
11
第三章直接序列扩频通信的仿真 12
仿真框图 12
14
结论 15
致谢 16
参考文献 17
第一章 SystemView的功能与使用简介
引言
80年代以来,通信和信号处理系统越来越复杂,各种新技术的发展对通信系统的实现起着重大的影响。通信系统复杂性的增加使得