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随着数字广播的发展,数字广播的应用领域已由单一的数字电视向多业务方向发展。文中提出了一种利用DVB-S信道传输综合业务的数据广播系统,系统提供了数字电视、流媒体、文件和消息四种基本业务载体,用户可以在这四种业务载体的基础上实现其应用。文中还介绍了系统的架构和传输协议,并从理论和数值上分析了系统的传输性能,得出了影响系统性能的主要因素。
With the development of digital broadcasting, the application field of digital broadcasting has evolved from a single digital television to multi-service. This paper presents a data broadcasting system using DVB-S channels to transmit integrated services. The system provides four basic service carriers: digital television, streaming media, files and messages. Users can implement their applications based on these four kinds of service carriers . The paper also introduced the architecture and transmission protocol of the system, analyzed the transmission performance of the system theoretically and numerically, and obtained the main factors that affect the system performance.