预编码EWF码用于可扩展视频的不等错误保护

Proceedings of the 5th International Mobile Multimedia Communications Conference Pub Date : 2009-09-07 DOI:10.4108/ICST.MOBIMEDIA2009.7407

D. Vukobratović, V. Stanković, L. Stanković, D. Sejdinovic

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引用次数: 6

摘要

无速率码是在任意擦除统计量的擦除信道上具有线性编解码复杂度和渐近容量逼近性能的前向纠错(FEC)码。它们最近被认为是一种简单而有效的解决方案，用于在具有数据包擦除的网络上进行分组视频传输。然而，为了使无速率码的纠错能力适应可扩展视频的不平等重要性，提出了非等错误保护(UEP)无速率码作为标准无速率码的替代方案。在本文中，我们扩展了我们最近的工作，称为扩展窗口喷泉(EWF)码的UEP无速率码，以提高其UEP性能。我们研究了预编码EWF码的设计，其中使用高速率低密度奇偶校验(LDPC)码进行预编码，遵循Raptor码设计中应用的类似推理。所得结果在EWF码的UEP纠错性能的背景下给出，并应用于可扩展视频编码(SVC)在擦除网络上的传输。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Precoded EWF codes for unequal error protection of scalable video

Rateless codes are forward error correcting (FEC) codes of linear encoding-decoding complexity and asymptotically capacity-approaching performance over erasure channels with any erasure statistics. They have been recently recognized as a simple and efficient solution for packetized video transmission over networks with packet erasures. However, to adapt the error correcting capabilities of rateless codes to the unequal importance of scalable video, unequal error protection (UEP) rateless codes are proposed as an alternative to standard rateless codes. In this paper, we extend our recent work on UEP rateless codes called Expanding Window Fountain (EWF) codes in order to improve their UEP performance. We investigate the design of precoded EWF codes, where precoding is done using high-rate Low-Density Parity-Check (LDPC) codes, following the similar reasoning applied in the design of Raptor codes. The obtained results are presented in the context of UEP error correcting performance of EWF codes and applied on scalable video coded (SVC) transmission over erasure networks.

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Proceedings of the 5th International Mobile Multimedia Communications Conference

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