TITLE:
Linear Codes over the Finite Ring Z15
AUTHORS:
Wensheng Li, Lingyu Wan, Mengtian Yue, Wei Chen, Xuedong Zhang
KEYWORDS:
Lee Weight, Hamming Weight, Gray Map, Dual Code
JOURNAL NAME:
Advances in Linear Algebra & Matrix Theory,
Vol.10 No.1,
April
9,
2020
ABSTRACT: In this paper, the structure of the non-chain ring Z15 is studied. The ideals of the ring Z15 are obtained through its non-units and the Lee weights of elements in Z15 are presented. On this basis, by the Chinese Remainder Theorem, we construct a unique expression of an element in Z15. Further, the Gray mapping from Zn15 to Z2n15 is defined and it’s shown to be distance preserved. The relationship between the minimum Lee weight and the minimum Hamming weight of the linear code over the ring Z15 is also obtained and we prove that the Gray map of the linear code over the ring Z15 is also linear.