Complete Distances of All Negacyclic Codes of Length Over
Complete Distances of All Negacyclic Codes of Length Over
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发表时间:
2007
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通讯作者:
H. Dinh
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作者:
H. Dinh
Various kinds of distances of all negacyclic codes of length over are completely determined. Using our structure theorems of negacyclic codes of length over , we first calcu- late the Hamming distances of all such negacyclic codes, which par- ticularly lead to the Hamming weight distributions and Hamming weight enumerators of several codes. These Hamming distances are then used to obtain their homogeneous, Lee, and Euclidean dis- tances. Our techniques are extendable to the more general class of constacyclic codes, namely, the -constacyclic codes of length over , where is any unit of with the form . We es- tablish the Hamming, homogeneous, Lee, and Euclidean distances of all such constacyclic codes. Index Terms—Binary codes, chain rings, codes over finite rings, constacyclic codes, cyclic codes, Euclidean distance, Hamming dis- tance, homogeneous distance, Lee distance, negacyclic codes, quar- ternary codes, repeated-root codes.