摘要
扩频通信技术由于具有抗干扰能力强,信号隐蔽性好,容易实现多址传输等优点而在卫星通信、数据传输、移动通信、无线数据通信等领域的应用日益广泛。其中直扩通信技术是目前使用的最典型扩频工作方式,弄清楚扩频和解扩处理过程的机制,是理解直接扩频通信技术本质的关键所在。首先介绍了直扩通信系统的基本工作原理,其次结合构建的系统模型,对其扩频和解扩的机制进行了详尽分析,提出了采用直扩技术通信的优势。最后给出了直扩技术在国内外的应用现状。
Spread spectrum communication is used more and more widely in satellite communication, data transmission, mobile communication and wireless data communication for its high keeping secrets and anti- jamming. In addition,it is very easy to implement multiple access transmission. At present, DSSS system is a typical spread spectrum mode, the principle of spread spectrum and despreading is very important to us,in favor of understanding the essence of DSSS. The paper introduces the hasic working principle and builds up system model of DSSS, and spread spectrum and despreading is analyzed in detail. DSSS technology＇s advantages are presented. At last,the application of DSSS technology at home and abroad is also given.
出处
《现代电子技术》
2007年第23期25-27,共3页
Modern Electronics Technique
