In this paper, we study Type IV self-dual codes over the commutative rings of order 4. Gleason-type theorems of Type IV codes and their shadow codes are investigated. A mass formula of Type IV codes over these rings are given. We give a classification of Type IV codes over Z4 and F2+uF2 for reasonable lengths. We also construct a number of optimal Type IV codes.
ASJC Scopus subject areas
- Information Systems
- Computer Science Applications
- Library and Information Sciences