通过40 GHz频段的多点视频分发系统（MVD）分发数字多节目电视（TV）/高清电视（HDTV）的调制和信道编码系统。本ETS中描述的系统基于ETS 300 421中描述的11/12 GHz卫星服务系统。当与适当频带的低噪声块（LNB）下变频器一起使用时，它允许将同一消费者集成接收机解码器（IRD）用于任一服务。根据建议T/R 52-01，已在CEPT内协调了40,5至42,5 GHz的频带。然而，该系统适用于10GHz以上的其他频带。 该系统采用四相移键控（QPSK）调制和基于卷积码和缩短里德-所罗门（RS）码的级联错误保护策略。该系统适用于不同的MVDS发射机带宽。提供了与运动图像专家组2（MPEG-2）编码电视服务（见ISO/IEC IS 13818-1）的兼容性，传输结构与分组复用同步。利用多路复用的灵活性，可以将传输容量用于各种电视服务配置，包括声音和数据服务。所有服务组件都在单个数字载波上进行时分复用（TDM）。

Modulation and channel coding system for the distribution of digital multi-programme Television (TV)/High Definition Television (HDTV) by Multipoint Video Distribution Systems (MVDS) in the 40 GHz band. The System described in this ETS is based on that described in ETS 300 421 for 11/12 GHz satellite services. It allows the same consumer Integrated Receiver Decoder (IRD) to be used for either service, when used with a Low Noise Block (LNB) down-converter for the appropriate frequency band. The frequency band 40,5 to 42,5 GHz has been harmonised within CEPT under Recommendation T/R 52-01. The System however, is applicable to other frequency bands above 10 GHz. The System uses Quaternary Phase Shift Keying (QPSK) modulation and concatenated error protection strategy based on a convolutional code and shortened Reed-Solomon (RS) code. The System is suitable for use on different MVDS transmitter bandwidths. Compatibility with Moving Pictures Experts Group-2 (MPEG-2) coded TV services (see ISO/IEC IS 13818-1), with a transmission structure synchronous with the packet multiplex, is provided. Exploitation of the multiplex flexibility allows the use of the transmission capacity for a variety of TV service configurations, including sound and data services. All service components are Time Division Multiplexed (TDM) on a single digital carrier.