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DVB-S2 ACM modes for IP and MPEG unicast applications

机译:DVB-S2 ACM模式,用于IP和MPEG单播应用

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The DVB-S2 standard (ETSI: EN 302 307. Digital Video Broadcasting (DVB): second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2)) has been conceived for several satellite broadband applications: Television Broadcast Services, Interactive Services including Internet Access by consumers, Professional Applications such as Digital Satellite News Gathering (DSNG) and TV distribution, data trunking. This paper focuses on the profiles supporting interactive type of services, for which Adaptive Coding and Modulation (ACM) has been included in the new generation of the standard. Following the DVB-S2 specifications, a number of modem configurations and tools are made available for implementing ACM in interactive systems. However, the different approaches have important impacts on the design of the system architecture and of the scheduling/resource management algorithms. The aim of the present contribution is providing a first discussion on the critical issues at system and MAC level, which need to be addressed when implementing a DVB-S2 ACM system. A general introduction to ACM is also provided, as well as an illustration of the key elements included in the DVB-S2 standard for supporting physical layer adaptivity.
机译:DVB-S2标准(ETSI:EN 302307。数字视频广播(DVB):第二代帧结构,用于广播,交互式服务,新闻收集和其他宽带卫星应用的信道编码和调制系统(DVB-S2))为以下几种卫星宽带应用而构思:电视广播服务,包括消费者互联网访问在内的交互式服务,数字卫星新闻采集(DSNG)和电视分发等专业应用,数据中继。本文重点介绍支持交互式服务类型的配置文件,在新一代标准中已将自适应编码和调制(ACM)包含在其中。遵循DVB-S2规范,提供了许多调制解调器配置和工具,可用于在交互式系统中实现ACM。但是,不同的方法对系统体系结构和调度/资源管理算法的设计有重要影响。本文稿的目的是提供有关系统和MAC级别的关键问题的首次讨论,在实现DVB-S2 ACM系统时需要解决这些问题。还提供了ACM的一般介绍,并说明了DVB-S2标准中包含的用于支持物理层适应性的关键元素。

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