Cocco, GiuseppeGuillén i Fábregas, A. (Albert)Font-Segura, Josep2025-06-042025-06-042024Cocco G, Guillén i Fàbregas A, Font-Segura J. A refinement of expurgation. IEEE Trans Inf Theory. 2024 Dec;70(12):8419-22. DOI: 10.1109/TIT.2024.33885630018-9448http://hdl.handle.net/10230/70609We show that for a wide range of channels and code ensembles with pairwise-independent codewords, with probability tending to 1 with the code length, expurgating an arbitrarily small fraction of codewords from a randomly selected code results in a code attaining the expurgated exponent.application/pdfeng© 2024 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/.info:eu-repo/semantics/articlehttp://dx.doi.org/10.1109/TIT.2024.3388563Reliable communicationsError exponentsExpurgated error exponentRandom code ensemblesRandom codinginfo:eu-repo/semantics/openAccess