文档介绍：DS扩频通信系统抗窄带干扰及正弦波干扰性能研究
[摘要]人类社会进入到了信息社会,通信现代化是人类社会进入信息时代的重要标志。扩频通信就是现代通信系统中的一种新兴的通信方式,其较强的抗干扰、抗衰落和抗多径性能以及频谱利用率高、多址通信等诸多优点越来越为人们所认识,并且被广泛的应用于民用和军用通信,本文介绍的主要内容就与扩频通信相关。扩展频谱通信系统简称为扩频系统。本文通过对扩频技术基础理论的叙述以及DS 直接序列扩频通信系统基础理论和它的抗窄带干扰及正弦波干扰性能的介绍,运用数学分析、引用模型、MATLAB软件仿真的方法进行定性分析,并从仿真结果的图形直观说明DS系统的抗窄带及正弦波干扰性能。最后简单谈到了扩频通信的几种抗干扰技术。
[关键词]伪随机码、窄带干扰、干扰容限、处理增益
DS spread munication systems and narrow-band interference sinusoidal interference Properties research
Wang Hui
(Grade 03,Class 9,Major electronics and information engineering ,Electronics and information engineering Dept.,Shaanxi University of Technology ,Hanzhong 723000,Shaanxi)
Tutor: Chen Li
[Abstract]:Human society have entered the information society, the important signs of the human society having entered the information munications modernization. And the spread munication is the munications system as a new means munication, It’s strong anti-jamming and anti-fading and multi-path performance and high spectral efficiency、multi-munications and many other advantages increasingly gaining recognition,And has been widely used in civil and munications. in this paper the main elements related with spread munication. Spread munication system known as spread spectrum systems. Based on spread spectrum technology foundation of the narrative and DS direct sequence spread munication systems theory and the basis for its anti-narrow Sine Wave band jamming and interference with the performance of the briefing, Through the use of mathematical analysis, cited model, MATLAB simulation method for qualitative analysis, Simulation results from the graphic visual note DS system of narrow-band interference and the sine wave properties. On the end ,talking the spread munication of several anti-jamming technology.
[Key words]:pseudo-random code, narrowband interference, jamming margin, processing gain
引言 4
5
5
5
7
8
9
10