Universal Quantization for Separate Encodings and Joint Decoding of Correlated Sources

作     者：Reani, Avraham Merhav, Neri 

作者机构：Technion Israel Inst Technol Dept Elect Engn IL-32000 Haifa Israel 

出 版 物：《IEEE TRANSACTIONS ON INFORMATION THEORY》 (IEEE Trans. Inf. Theory)

年 卷 期：2015年第61卷第12期

页      面：6465-6474页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Israeli Science Foundation [208/08] 

主　　题：Multi-terminal source coding dithered quantization universal source coding scalar quantization Slepian-Wolf coding 

摘      要：We consider the multi-user lossy source-coding problem for continuous alphabet sources. In a previous work, Ziv proposed a single-user universal coding scheme which uses uniform quantization with dither, followed by a lossless source encoder (entropy coder). In this paper, we generalize Ziv s scheme to the multi-user setting. For this generalized universal scheme, upper bounds are derived on the redundancies, defined as the differences between the actual rates and the closest corresponding rates on the boundary of the rate region. For the mean-square error distortion measure, it is shown that this scheme can achieve redundancies of no more than 0.754 b per sample for each user. These bounds are obtained without the knowledge of the multi-user rate region, which is an open problem in general. As a direct consequence of these results, the inner and outer bounds on the rate-distortion achievable region are obtained.