A Derivation of the Source-Channel Error Exponent using Non-identical Product Distributions
Information Theory
2014-02-19 v2 math.IT
Abstract
This paper studies the random-coding exponent of joint source-channel coding for a scheme where source messages are assigned to disjoint subsets (referred to as classes), and codewords are independently generated according to a distribution that depends on the class index of the source message. For discrete memoryless systems, two optimally chosen classes and product distributions are found to be sufficient to attain the sphere-packing exponent in those cases where it is tight.
Keywords
Cite
@article{arxiv.1303.6249,
title = {A Derivation of the Source-Channel Error Exponent using Non-identical Product Distributions},
author = {Adrià Tauste Campo and Gonzalo Vazquez-Vilar and Albert Guillén i Fàbregas and Tobias Koch and Alfonso Martinez},
journal= {arXiv preprint arXiv:1303.6249},
year = {2014}
}
Comments
Submitted to IEEE Transactions on Information Theory