Primitive idempotents of irreducible cyclic codes and self-dual cyclic codes over Galois rings
Primitive idempotents of irreducible cyclic codes and self-dual cyclic codes over Galois rings
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DOI:
10.1016/j.disc.2017.10.027
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发表时间:
2017-11
期刊:
影响因子:
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通讯作者:
Yansheng Wu;Q. Yue;Fengwei Li
中科院分区:
文献类型:
--
作者:
Yansheng Wu;Q. Yue;Fengwei Li
Let R be the Galois ring G R (p k, s) of characteristic p k and cardinality p s k. Firstly, we give all primitive idempotent generators of irreducible cyclic codes of length n over R, and a p-adic integer ring with gcd (p, n)= 1. Secondly, we obtain all primitive idempotents of all irreducible cyclic codes of length r l m over R, where r, l, and t are three primes with 2∤ l, r|(q t− 1), l v∥(q t− 1) and gcd (r l, q (q− 1))= 1. Finally, as applications, weight distributions of all irreducible cyclic codes for t= 2 and generator polynomials of self-dual cyclic codes of length l m and r l m over R are given.