Abstract

Let K be a set of positive integers and let G be an additive group. A (G,K,1) difference packing is a set of subsets of G with sizes from K whose list of differences covers every element of G at most once. It is balanced if the number of blocks of size k∈K does not depend on k. In this paper, we determine a balanced (Z4u×Z8v,{4,5},1) difference packing of the largest possible size whenever uv is odd. The corresponding optimal balanced (4u,8v,{4,5},1) optical orthogonal signature pattern codes are also obtained.

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