卫星数字多节目电视/高清晰度电视服务的调制和信道编码基线系统将用于FSS和BSS频段的卫星数字电视的一次和二次分配基线系统旨在为消费者集成接收机解码器（IRD）以及集合天线系统（SMATV）和有线电视前端提供直接到家（DTH）服务具有再调制可能性的电台。基线系统使用QPSK调制和基于卷积码和缩短里德-所罗门码的级联错误保护策略。基线系统适用于不同的卫星转发器带宽。提供与MPEG-2编码电视服务的兼容性，传输结构与分组复用同步。多路复用的灵活性允许将传输容量用于各种电视服务配置，包括声音和数据服务。 所有服务组件都在一个数字载波上进行时间多路复用（TDM）。

Baseline System for modulation and channel coding for satellite digital multi-programme TV/HDTV services to be used for satellite digital TV for primary and secondary distribution in FSS and BSS bands The Baseline System is intended to provide Direct-to-Home (DTH) services for consumer Integrated Receiver Decoders (IRDs) as well as collective antenna systems (SMATV) and cable television head-end stations with a likelihood of remodulation. The Baseline System uses QPSK modulation and concatenated error protection strategy based on a convolutional code and a shortened Reed-Solomon code. The Baseline System is suitable for use on different satellite transponder bandwidths. Compatibility with MPEG-2 coded TV services, with a transmission structure synchronous with the packet multiplex, is provided. The multiplex flexibility allows the use of transmission capacity for a variety of TV service configurations, including sound and data services. All service components are time multiplexed (TDM) on a single digital carrier.