基于自适应分组的预警信息发布系统

Research on the early warning information transmitting system based on adaptive packet

介绍了DAB(数字音频广播)主业务信息通道的传输结构及其作用,提出了一种应用于DAB发射机在主业务信息通道传输文字模块的设计方案.该设计针对现有DAB发送文字信息所需的多样性、实时性和经济性的要求,基于MOT(多媒体对象传输)协议传输规范,利用自适应分组模式传输机制提高了DAB发射系统发送文本信息(气象预警信息、交通信息等)的灵活性和子信道容量的利用率.该方案已通过自适应分组编码软件实现.

This title describes the primary business information DAB and function of the transmission channel, presents a design module which is used in DAB transmitters to transport the text messages in main business informa- tion channel. Because of the demand of diversity, real-time and economy when transmitting text messages by DAB, we utilize adaptive packet mode transport mechanisms that is based on the MOT protocol transmission specification to improve the DAB transmitting system to send text messages （weather warning information, traffic information, etc. ） flexibility and capacity utilization of sub-channels. Currently, the program has been achieved by the adaptive block coding software.