Abstract
The purpose of this paper is to construct nontrivial MDS self-dual codes over Galois rings. We consider a building-up construction of self-dual codes over Galois rings as a GF(q)-analogue of (Kim and Lee, J Combin Theory ser A, 105:79-95). We give a necessary and sufficient condition on which the building-up construction holds. We construct MDS self-dual codes of lengths up to 8 over GR(32,2), GR(33,2) and GR(34,2), and near-MDS self-dual codes of length 10 over these rings. In a similar manner, over GR(52,2), GR(53,2) and GR(72,2), we construct MDS self-dual codes of lengths up to 10 and near-MDS self-dual codes of length 12. Furthermore, over GR(112,2) we have MDS self-dual codes of lengths up to 12.
| Original language | English |
|---|---|
| Pages (from-to) | 247-258 |
| Number of pages | 12 |
| Journal | Designs, Codes, and Cryptography |
| Volume | 45 |
| Issue number | 2 |
| DOIs | |
| State | Published - Nov 2007 |
Bibliographical note
Funding Information:Acknowledgments The authors thank the anonymous referees for comments and suggestions which helped to improve the paper. J.-L. Kim was supported in part by a Project Completion Grant from the University of Louisville and Y. Lee was supported by NSERC.
Keywords
- Galois ring
- MDS code
- Self-dual code