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首页> 外文会议>Annual Allerton Conference on Communication, Control, and Computing; 20040929-1001; Monticello,IL(US) >Multiterminal Source Code Design Based on Slepian-Wolf Coded Quantization
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Multiterminal Source Code Design Based on Slepian-Wolf Coded Quantization

机译：基于Slepian-Wolf编码量化的多终端源代码设计

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摘要

Multiterminal (MT) source coding refers to separate lossy encoding and joint decoding of multiple correlated sources. This paper presents two practical MT coding schemes under the same general framework of Slepian-Wolf coded quantization (SWCQ) for both direct and indirect quadratic Gaussian MT source coding problems with two encoders. The first asymmetric SWCQ scheme relies on quantization and Wyner-Ziv coding, where a quantized source is compressed using asymmetric Slepian-Wolf coding (with side information at the decoder). It is implemented via source splitting with one classical source coding component and two Wyner-Ziv coding components. In the second symmetric SWCQ scheme, the two quantized sources are compressed using symmetric Slepian-Wolf coding. We show that each scheme can potentially achieve any point on the inner bound of the rate region for both direct and indirect MT coding problems. Practical designs based on entropy-coded TCQ for classic source coding and LDPC code based asymmetric Slepian-Wolf coding of TCQ indices for Wyner-Ziv coding in the first scheme, and arithmetic code and turbo code based symmetric Slepian-Wolf coding of TCQ indices in the second scheme perform only 0.29 bit per sample away from the inner bound of the rate region. This work thus represents a major step towards limit-approaching MT code designs.
机译：多终端（MT）源编码是指对多个相关源进行单独的有损编码和联合解码。本文针对两个编码器的直接和间接二次高斯MT源编码问题，在相同的Slepian-Wolf编码量化（SWCQ）通用框架下，提出了两种实用的MT编码方案。第一种非对称SWCQ方案依赖于量化和Wyner-Ziv编码，其中使用非对称Slepian-Wolf编码（在解码器处附带信息）压缩量化源。它通过使用一个经典源编码组件和两个Wyner-Ziv编码组件的源拆分来实现。在第二个对称SWCQ方案中，两个量化源使用对称Slepian-Wolf编码进行压缩。我们表明，对于直接和间接MT编码问题，每种方案都可能在速率区域的内边界上实现任何一点。在第一方案中，基于经典源编码的熵编码TCQ和基于WQ编码的LDP编码的不对称Slepian-Wolf编码用于Wyner-Ziv编码的实用设计，以及基于算术代码和基于Turbo码的TCQ索引的对称Slepian-Wolf编码的实用设计第二种方案是每个样本在速率区域内边界以外仅执行0.29位。因此，这项工作代表了朝着接近极限的MT代码设计迈出的重要一步。

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