English

List-Decoding Capacity Implies Capacity on the q-ary Symmetric Channel

Information Theory 2024-10-29 v1 math.IT

Abstract

It is known that the Shannon capacity of the q-ary symmetric channel (qSC) is the same as the list-decoding capacity of an adversarial channel, raising the question of whether there is a formal (and black-box) connection between the two. We show that there is: Any linear code CFqnC\subseteq \mathbb{F}_q^n that has minimum distance dmin=ω(q3)d_{\min}=\omega(q^3) and achieves list-decoding capacity also achieves capacity on the qSC.

Keywords

Cite

@article{arxiv.2410.20020,
  title  = {List-Decoding Capacity Implies Capacity on the q-ary Symmetric Channel},
  author = {Francisco Pernice and Oscar Sprumont and Mary Wootters},
  journal= {arXiv preprint arXiv:2410.20020},
  year   = {2024}
}
R2 v1 2026-06-28T19:36:22.808Z