Elsevier

Discrete Applied Mathematics

Volume 217, Part 2, 30 January 2017, Pages 144-150
Discrete Applied Mathematics

Nonexistence of a few binary orthogonal arrays

https://doi.org/10.1016/j.dam.2016.07.023Get rights and content
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Abstract

We develop and apply combinatorial algorithms for investigation of the feasible distance distributions of binary orthogonal arrays with respect to a point of the ambient binary Hamming space utilizing constraints imposed from the relations between the distance distributions of connected arrays. This turns out to be strong enough and we prove the nonexistence of binary orthogonal arrays of parameters (length, cardinality, strength)=(9,96,4), (10,192,5), (10,112,4), (11,224,5), (11,112,4) and (12,224,5), resolving the first cases where the existence was undecided so far. For the existing arrays our approach allows substantial reduction of the number of feasible distance distributions which could be helpful for classification results (uniqueness, for example).

Keywords

Binary Hamming space
Orthogonal arrays
Krawtchouk polynomials
Distance distributions
Nonexistence

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