无线数据广播系统的软件同步

Software Synchronization in RDS System

无线数据广播系统中 ,由于数据编码格式多采用无帧间隔的同步方式 ,这给接收机解码工作带来一定困难。因此 ,如何确定同步并区别误同步就是一个需要认真讨论的问题。文中在目前现有的硬件同步方式的基础上 ,针对某些小系统的应用 ,提出一种以软件形式解决无帧间隔同步机制的方式 ,它充分利用现有微处理器的高速和高性能 ,有效地减小了小系统组成的硬件成本 ,并增加了系统实现同步和区别误同步的提高抗干扰能力和灵活性 。

In the Radio Broadcast Data System,it brings much difficulty for decoding in the receiver that the synchronization method of frameless interval is used in data format.Therefor,it becomes a problem that must be discussed carefully how to distinguish if the data is synchronized or mistakenly synchronized.This paper put forward a new software method to solve frameless interval synchronization,which is based on the hardware synchronization method.The software method may fully use the high performance of the microprocessor to decrease hardware cost and increase system capability of anti jamming and adaptability for some small system.It is useful to the research of the Radio Broadcast Data System.