多载波频率分集扩展频谱通信的同步原理分析

多载波频率分集扩展频谱通信系统（ＦＤ／ＳＳＭＡ）是基于多载波传输技术上的一种新的扩展频谱多址系统。本文分析研究该系统的同步原理，其中包括接收机参考信号与所接收信号的定时同步的识别、定时同步的跟踪、载波频率跟踪及载波相位跟踪。分析表明，通过三个误差信号，即定时同步误差信号、载波频率误差信号及载波相位误差信号的获取及它们对系统的控制，从原理上解决了ＦＤ／ＳＳＭＡ系统的同步问题

Analysis of the Principle of Synchronization in the FD/SSMA System

The frequency diversity spread spectrum multiple access (FD/SSMA) is a new spread spectrum system, which is based on the theory of parallel data transmission. The basic principle of synchronization of the FD/SSMA system is studied in this paper, where recognizing and tracking of timing synchronization between the local reference signal and the received signal, tracking and locking of the frequency and phase of carrier are included. It is shown that the principle of synchronization of the FD/SSMA is given on the basis of controlling to the receiver by three error signals, i.e., the timing synchronization error, the carrier frequency error and the carrier phase error.