On the Minimum Energy of Sending Correlated Sources Over the Gaussian MAC

被引：11
|
作者：
Jiang, Nan [1 ]
Yang, Yang [1 ]
Host-Madsen, Anders [2 ]
Xiong, Zixiang [1 ]
机构：
[1] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77840 USA
[2] Univ Hawaii Manoa, Dept Elect Engn, Honolulu, HI 96813 USA
来源：
IEEE TRANSACTIONS ON INFORMATION THEORY | 2014年 / 60卷 / 10期
基金：
美国国家科学基金会;
关键词：
Correlated sources; hybrid digital/analog transmission; the MAC; the minimum energy; separate source and channel coding; uncoded transmission; RATE-DISTORTION FUNCTION; CHANNEL; BROADCAST; REGION; TRANSMISSION; CAPACITY;
D O I：
10.1109/TIT.2014.2348573
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we investigate the minimum energy of transmitting correlated sources over the Gaussian multiple-access channel. Compared to other works on joint source-channel coding, we consider the fundamental problem of the minimum transmission energy, where the source and channel bandwidths are not naturally matched. Different models of correlated sources are studied. We first treat lossy transmission of Gaussian sources, including multiterminal sources and CEO sources. We then consider lossless transmission of correlated binary sources. In all cases, we lower bound the minimum energy using a cut-set argument that couples transmission energy and the distortions for the Gaussian cases (or source entropy for the discrete case). For the achievable schemes, separate source and channel coding and uncoded transmission are studied as benchmarks. In addition, we show that hybrid digital/analog transmission achieves the best known energy efficiency.
引用
收藏
页码：6254 / 6275
页数：22
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