块源编码与顺序编码

2019 IEEE Information Theory Workshop (ITW) Pub Date : 2019-08-01 DOI:10.1109/ITW44776.2019.8989296

Hamid Ghourchian, Photios A. Stavrou, T. Oechtering, M. Skoglund

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引用次数: 1

摘要

我们引入了可实现的累积速率分布函数(CRDF)的概念，以表征顺序编码过程，确保使用非因果解码器进行平均失真的无损或有损重建。利用多数化理论的工具，我们得到了给定IID源的CRDF的充分必要条件。结果表明，可实现的最优畸变水平可以充分表征CRDF的凹壳。

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Block Source Coding with Sequential Encoding

We introduce the concept of achievable cumulative rate distribution functions (CRDF) to characterize sequentially encoding processes that ensure a lossless or lossy reconstruction subject to an average distortion using a non-causal decoder. Utilizing tools from majorization theory, we derive necessary and sufficient conditions on the CRDF for a given IID source. It turns out that the optimal achievable distortion level can be adequately characterized by the concave-hull of the CRDF.

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2019 IEEE Information Theory Workshop (ITW)

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