主要是数字调制系统、扩展频谱通信原理和直接序列扩频系统等内容。
It mainly contains the digital modulate system, the SS communication theory and the direct sequence spread spectrum (DSSS) system.
本文讨论直接序列扩展频谱通信系统中有关同步捕获和跟踪的问题。
In this paper, the theory of spread spectrum communication technology is presented, the structure and the operating principle of spread spectrum communication system are discussed.
扩展频谱通信是具有广阔发展前景的通信方式之一，并广泛应用于军事通信和民用通信中。
Spread Spectrum communication became one of the communication ways with wide developing prospect, and has being applied to military communication and civil communication extensively.
扩展频谱通信到目前为止已经成为比较成熟的一门技术，在个人通信方面，它具有独特的优点。
Spread spectrum communication is an accepted technique and has many special advantages. The chaos theory has been the focus of scientific research.
本文讨论直接序列扩展频谱通信系统中有关同步捕获和跟踪的问题。给出了直接扩频系统的滑动搜索自同步方案。
Contributed to the acquisition and Code tracing for the DS spread spectrum com munication systems, this paper presents the scheme of sliding search self-synchronization for a DS system.
直接系列扩频通信系统的频谱扩展是借助于扩频函数而实现的，典型的扩频函数就是伪随机序列码。
Spectra expanding of Spread spectrum communication system makes use of the spread spectrum function to realize, the typical spread spectrum function is pseudo random sequence code.
本文针对低轨卫星直接序列扩展频谱(DSSS)通信中的信号同步问题，提出了基于软件无线电平台的处理方法。
According to the signal synchronization of LEO's direct sequence spread spectrum (DSSS) communication, a method based on software radio platform was described.
所有这些参量对于在扩展频谱码分多址通信系统中，指导特征序列的选取有着极为重要的意义。
All of those are important for choice signature sequences in the spectrum code-division multiple-access communication systems.
扩频通信是指在发送端将信号的频谱扩展到一个很宽的频带上，在接收端通过相关接收，将信号恢复到信息带宽的一种系统。
The SS communication is a system that the spectrum of signal is spreaded in a wide frequency band when transmitted, and is recovered by the correlation reception when received.
随着移动用户的增多以及人们对移动通信业务的追求从单纯的语音业务扩展到多媒体业务，有限的频谱资源显得日趋紧张。
With the increasing of mobile users and the demands which are transforming from the pure voice service to multimedia service, the limited frequency spectrum resources are running short.
根据扩展频谱方式的不同，扩频通信系统分为：直接序列扩频、跳频扩频和混合扩频。
According to different ways of spread spectrum, spread spectrum communication systems are divided into: direct sequence spread spectrum, frequency-hopping spread spectrum and hybrid spread spectrum.
根据扩展频谱方式的不同，扩频通信系统分为：直接序列扩频、跳频扩频和混合扩频。
According to different ways of spread spectrum, spread spectrum communication systems are divided into: direct sequence spread spectrum, frequency-hopping spread spectrum and hybrid spread spectrum.
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