Title :
Mass formulas for self-dual codes over Z4 and Fq+uFq rings
Author_Institution :
Lab. d´Algorithmique Arithmetique, Bordeaux I Univ., Talence
fDate :
7/1/1996 12:00:00 AM
Abstract :
We give a mass formula for quaternary self-dual and type II codes and for self-dual codes over Fq+uFq rings. We define type II codes and compute the number of distinct type II codes. We also give formulas for the number of doubly even binary codes, necessary to compute Nd(n), the number of distinct codes of length n, for any dimension n, and conclude that the classification of quaternary self-dual codes could be reasonably extended to length 14
Keywords :
binary sequences; dual codes; code dimension; code length; doubly even binary codes; mass formula; quaternary self-dual codes; type II codes; Arithmetic; Binary codes; Lattices; Linear code;
Journal_Title :
Information Theory, IEEE Transactions on
