arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.2864cs.ITmath.IT
收藏

在解码器处具有边信息的两个信源乘积的率失真函数

The Rate-Distortion Function for Product of Two Sources with Side-Information at Decoders

Shun Watanabe

摘要:

本文研究了两个译码器可以分别获得各自边信息的有损信源编码问题。相关的来源是两个组件相关的来源的产品,我们专门调查的情况下,每个组件被降级。我们给出了这种情况下的率失真函数,并给出了以下观察结果。当分量按匹配顺序退化时,乘积源的率失真函数等于分量级率失真函数之和。另一方面,前者是严格小于后者时,分量源退化的失配顺序。不匹配情况的逆证明是由用于广播信道的增强技术激发的。对于二进制汉明和高斯的例子,我们评估率失真函数。

英文摘要:

This paper investigates a lossy source coding problem in which two decoders can access their side-information respectively. The correlated sources are a product of two component correlated sources, and we exclusively investigate the case such that each component is degraded. We show the rate-distortion function for that case, and give the following observations. When the components are degraded in matched order, the rate distortion function of the product sources is equal to the sum of the component-wise rate distortion functions. On the otherhand, the former is strictly smaller than the latter when the component sources are degraded in mismatched order. The converse proof for the mismatched case is motivated by the enhancement technique used for broadcast channels. For binary Hamming and Gaussian examples, we evaluate the rate-distortion functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑