直序扩频系统中扩频码同步技术的研究

针对扩频通信中伪随机序列的快速捕获问题,文中提出了扩频信号快速捕获方法,来解决低信噪比条件下伪码序列的捕获问题.首先对直接扩频通信系统的基础理论做了探讨,而后重点研究了两种基带扩频信号同步捕获方案--序列相位搜索捕获法和不连续相位滑动相关法,序列相位搜索捕获法主要适用于m序列码周期较短的情况,而不连续滑动相关法则克服了...

Study on synchronous technology of spread spectrum code synchronous technology in directly spread spectrum system

In the spread spectrum communication system,capturing PN sequence rapidly is very important,this paper proposes spread spectrum signal rapidly capturing method to solve capturing PN code the in low SNR.Firstly,the basic theory of direct spread spectrum communication systems are discussed,and then mainly researching two baseband spread spectrum signal timing acquisition methods-sequence phase search capture method and discontinuous phase glide correlation method,the first method is mainly suitable for m sequ...