1 research outputs found
A New Approach to the Kasami Codes of Type 2
Revised version. The automorphism-group part essentially updated (in the previous versions, it contained incorrect results)The dual of the Kasami code of length , with a power of , is constructed by concatenating a cyclic MDS code of length over with a simplex code of length . This yields a new derivation of the weight distribution of the Kasami code, a new description of its coset graph, and a new proof that the Kasami code is completely regular. The automorphism groups of the Kasami code and the related -ary MDS code are determined. New cyclic completely regular codes over finite fields a power of are constructed. They have coset graphs isomorphic to that of the Kasami codes