数字电视:使用涡轮码的分层频道编码

Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI:10.1109/ICC.1994.368902

C. Berrou, Pierre Combelles

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引用次数: 12

摘要

数字电视地面传输必须处理各种接收条件:无插头电视接收到的信号比有屋顶天线的电视接收到的信号低得多。因此，提供一种能传递两种信息的信号是很有趣的:一种是便携式接收器的“基本”图像，这种信息必须以最可靠的方式传输;为了获得更高清晰度的图像，需要在基本图像中加入额外的信息，这些保护程度较低的信息只能由固定的接收器解码。这意味着多保护或分层通道编码，包括非常有效的代码来保护基本图像。本文描述了一种分层信道编码和调制方案，该方案与一种新的二进制码族一起被认为可以设计出良好的分层传输系统。

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Digital television: hierarchical channel coding using turbo-codes

Digital television terrestrial transmission has to deal with various reception conditions: a plug-free TV set receives a much lower a signal thanone with a roof-top antenna. It is hence interesting to provide a signal that conveys two types of information: a "basic" picture for portable receivers, this information must be transmitted most reliably; and additional information to be added to the basic picture in order to get a higher definition picture, this lesser protected information can be decoded by fixed receivers only. This implies multi-protection-or hierarchical-channel coding, including very efficient codes to protect the basic picture. This article describes a hierarchical channel coding and modulation scheme that, together with a new family of binary codes, is believed to allow the design of good hierarchical transmission systems.<>

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Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications

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