paper

Class-Based Expurgation Attains Csiszár's Expurgated Source-Channel Exponent

arXiv:2507.03481

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 Csiszár's expurgated exponent.

This paper is scheduled to be presented at IEEE ITW 2025, Sydney, Australia

Class-Based Expurgation Attains Csiszár's Expurgated Source-Channel Exponent · wovepaper