On self-dual double circulant codes
Adel N. Alahmadi, Funda Basaran Özdemir, Patrick Solé · arXiv (Cornell University) · 2016
Self-dual double circulant codes of odd dimension are shown to be dihedral in even characteristic and consta-dihedral in odd characteristic. Exact counting formulae are derived for them and used to show they contain families of codes with relative distance satisfying a modified Gilbert-Varshamov bound.