A Pair of Disjoint 3-GDDs of type g^t u^1

Yanxun Chang, Yeow Meng Chee, Junling Zhou

Pairwise disjoint 3-GDDs can be used to construct some optimal constant-weight codes. We study the existence of a pair of disjoint 3-GDDs of type $g^t{u}^1$ and establish that its n…