On q-ary codes with two distances d and d+1

06/23/2019
by   P. Boyvalenkov, et al.
0

The q-ary block codes with two distances d and d+1 are considered. Several constructions of such codes are given, as in the linear case all codes can be obtained by a simple modification of linear equidistant codes. Upper bounds for the maximum cardinality of such codes is derived. Tables of lower and upper bounds for small q and n are presented.

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