Abstract
The van Lint-Wilson AB-method yields a short proof of the Roos bound for the minimum distance of a cyclic code. We use the AB-method to obtain a different bound for the weights of a linear code. In contrast to the Roos bound, the role of the codes A and B in our bound is symmetric. We use the bound to prove the actual minimum distance for a class of dual BCH codes of length q2 - 1 over Fq. We give cyclic codes [63, 38, 16] and [65, 40, 16] over F8 that are better than the known [63, 38, 15] and [65, 40, 15] codes.
Original language | English (US) |
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Pages (from-to) | 1677-1688 |
Number of pages | 12 |
Journal | Journal of Combinatorial Theory. Series A |
Volume | 113 |
Issue number | 8 |
DOIs | |
State | Published - Nov 2006 |
Keywords
- Cyclic code
- Dual BCH code
- Minimum distance bound
- Roos bound
ASJC Scopus subject areas
- Theoretical Computer Science
- Discrete Mathematics and Combinatorics
- Computational Theory and Mathematics