An Enhanced Covering Lemma for Multiterminal Source Coding

An enhanced covering lemma for a Markov chain is proved in this paper, and then the distributed source coding problem of correlated general sources with one average distortion criterion under fixed-length coding is investigated. Based on the enhanced lemma, a sufficient and necessary condition for determining the achievability of rate-distortion triples is given.Comment: To appear in Proc. 2006 IEEE Information Theory Workshop, October 22-26, 2006, Chengdu, China. (5 pages

On the Performance of Lossless Joint Source-Channel Coding Based on Linear Codes

A general lossless joint source-channel coding scheme based on linear codes is proposed and then analyzed in this paper. It is shown that a linear code with good joint spectrum can be used to establish limit-approaching joint source-channel coding schemes for arbitrary sources and channels, where the joint spectrum of the code is a generalization of the input-output weight distribution.Comment: To appear in Proc. 2006 IEEE Information Theory Workshop, October 22-26, 2006, Chengdu, China. (5 pages, 2 figures