基于TDMA的自组网系统跳频同步研究

Research on Frequency Hopping Synchronization of Ad-hoc Network System Based on TDMA

自组织网络动态的分布形式以及无中心节点的网络结构特性使得跳频的频率同步成为其核心问题之一。本文主要讨论完成跳频同步的前提条件,介绍了几种常见的跳频同步方法,并提出了一种基于同步字头法的频率同步方法,详细介绍了其特殊帧结构及同步序列的选取,并完成了该方法同步性能的仿真,该方法可适应于自组网传输系统,具有抗阻塞式干扰能力且同步可靠性高。

The distribution form of the ad-hoc network system and the structure characteristic of the network without central nodes make frequency synchronization of frequency hopping one of its core problems.The premise of frequency hopping synchronization and several common frequency hopping synchronization methods are firstly discussed,and a frequency synchronization method based on synchronous-head approach is proposed.In this method,the special frame structure and the synchronization sequence selection are introduced in detail,and the simulation of its synchronization performance is conducted.The simulation is suitable for the ad-hoc network system,characterized by anti-blocking interference function and highly reliable sychronization.