扩频技术及其应用  

Spread Spectrum Technology and Its Application

作　　者：胡文江[1] 徐潇潇[1] 方磊[1] 

机构地区：[1]重庆邮电学院通信与信息工程学院,重庆400065

出　　处：《信息安全与通信保密》2006年第8期168-170,共3页Information Security and Communications Privacy

摘　　要：扩频技术是充分利用有限频谱资源,提高无线信息传输效率的一种新技术,文章介绍了扩频通信工作原理及其系统模型,详细阐述了扩频通信的两种主要技术:直接序列扩频和跳频扩频,解释其工作原理,并将这二者的性能进行比较。另外介绍了扩频与数字水印技术的结合,利用扩频原理的数字水印技术具有很高的健壮性和安全性。The technology of spread spectrum fully makes use of the limited spectrum resource, and improves the efficiency of wireless information transferring. This paper introduces the spread spectrum communication＇s working principle and its system model, and the two main technologies, DS and FH, making a comparison between them. In addition, we introduce the integration of the spread spectrum technology and the digital watermark technology, so this digital technology has a strong haleness and safety.

关 键 词：扩频技术 直接序列扩频 跳频扩频 数字水印 

分 类 号：TN914.42[电子电信—通信与信息系统]