Some ternary and quaternary codes and associated sphere packings
- 1 March 1992
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 38 (2), 227-246
- https://doi.org/10.1109/18.119683
Abstract
Tables of good ternary and quaternary codes are presented, and they are used in the construction of dense sphere packings. Results include (1) tables of the best ternary and quaternary constacyclic codes (including cyclic codes) up to block length 50; (2) a class of optimal (n, 2) codes over GF(q); (3) the (u+v+w mod 2u+v mod u) construction, a new ternary code construction technique that can be used to construct the ternary Reed-Muller codes (and others); and (4) tables of linear ternary and quaternary codes obtained by modifying and combining various codes here and in the literature. Packings are generated in even dimensions up to 100 using these codes and a sphere-packing construction. In dimensions 36 and 60, new record densities appear to have been achieved.<>Keywords
This publication has 18 references indexed in Scilit:
- Multilevel codes and multistage decodingIEEE Transactions on Communications, 1989
- Multilevel codes based on partitioningIEEE Transactions on Information Theory, 1989
- Coset codes. I. Introduction and geometrical classificationIEEE Transactions on Information Theory, 1988
- An updated table of minimum-distance bounds for binary linear codesIEEE Transactions on Information Theory, 1987
- New trellis codes based on lattices and cosetsIEEE Transactions on Information Theory, 1987
- The minimum distance of all binary cyclic codes of odd lengths from 69 to 99IEEE Transactions on Information Theory, 1978
- A new multilevel coding method using error-correcting codesIEEE Transactions on Information Theory, 1977
- Polynomial weights and code constructionsIEEE Transactions on Information Theory, 1973
- On weights in quadratic-residue codesDiscrete Mathematics, 1972
- Computer results on the minimum distance of some binary cyclic codes (Corresp.)IEEE Transactions on Information Theory, 1970