English

Construction for both self-dual codes and LCD codes

Information Theory 2021-08-31 v1 Combinatorics math.IT

Abstract

From a given [n,k][n, k] code CC, we give a method for constructing many [n,k][n, k] codes CC' such that the hull dimensions of CC and CC' are identical. This method can be applied to constructions of both self-dual codes and linear complementary dual codes (LCD codes for short). Using the method, we construct 661 new inequivalent extremal doubly even [56,28,12][56, 28, 12] codes. Furthermore, constructing LCD codes by the method, we improve some of the previously known lower bounds on the largest minimum weights of binary LCD codes of length n=26,28n40n=26,28 \le n \le 40.

Keywords

Cite

@article{arxiv.2108.12544,
  title  = {Construction for both self-dual codes and LCD codes},
  author = {Keita Ishizuka and Ken Saito},
  journal= {arXiv preprint arXiv:2108.12544},
  year   = {2021}
}
R2 v1 2026-06-24T05:29:13.848Z