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时分多址扩谱通信系统中,一个最基本的任务就是实现本机的伪随机信号与接收的伪随机信号同步。本文给出了一种采用声表面波卷积器作为接收机的可编程匹配滤波器,实现时分多址直接序列扩谱信号的快速粗同步方法。文中阐述了同步捕获的工作原理以及粗同步调整的必要性,分析了这种同步方法的捕获性能以及粗同步时基调整所需的时间。
Time Division Multiple Access spread spectrum communication system, one of the most basic task is to achieve the machine’s pseudo-random signal and received pseudo-random signal synchronization. This paper presents a programmable matched filter using SAW convolvers as a receiver to achieve a fast coarse synchronization method for time-division multiple access direct sequence spread spectrum signals. This paper describes the working principle of synchronization acquisition and the necessity of coarse synchronization adjustment. The acquisition performance of this synchronization method and the time required for coarse synchronization timing adjustment are analyzed.