On the covering radii of extremal doubly even self-dual codes
Masaaki Harada, Akihiro Munemasa · Advances in Mathematics of Communications · 2007
In this note, we study the covering radii of extremal doubly even self-dual codes. We give slightly improved lower bounds on the covering radii of extremal doubly even self-dual codes of lengths 64, 80 and 96. The covering radii of some known extremal doubly even self-dual [64, 32, 12] codes are determined.