Class-Based Expurgation Attains Csisz\'ar's Expurgated Source-Channel Exponent
Information Theory
2025-09-16 v3 math.IT
Probability
Abstract
This paper studies expurgated error exponents for joint source-channel coding for discrete memoryless sources and channels. We consider a partition of the source messages into classes, where the codeword distributions depend on the class. We show that two carefully chosen classes suffice to achieve Csisz\'ar's expurgated exponent.
Cite
@article{arxiv.2507.03481,
title = {Class-Based Expurgation Attains Csisz\'ar's Expurgated Source-Channel Exponent},
author = {AmirPouya Moeini and Albert Guillén i Fàbregas},
journal= {arXiv preprint arXiv:2507.03481},
year = {2025}
}
Comments
This paper is scheduled to be presented at IEEE ITW 2025, Sydney, Australia