Abstract

Nguyen, Gyorfi and Massey (see IEEE Trans. Inform. Theory, vo1.38, no.3, p.940-9, 1992) presented a new construction method for binary constant-weight cyclic codes. By slightly modifying this method, we could construct new constant-weight codes (not necessarily cyclic). Furthermore, two classes of binary optimum constant-weight codes could be constructed by using this modified method. In general, we show that binary optimum constant-weight codes, which achieve the Johnson bound, could be constructed from codes over GF(q) which achieve the Plotkin bound.

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