Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (3): 122-125.doi: 10.1016/S1005-8885(08)60237-X

• Others • Previous Articles     Next Articles

Constacyclic and cyclic codes over finite chain rings

QIAN Jian-fa, MA Wen-ping   

  1. National Key Laboratory of ISN, Xidian University, Xi’an 710071, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-06-30
  • Contact: QIAN Jian-fa

Abstract:

The problem of Gray image of constacyclic code over finite chain ring is studied. A Gray map between codes over a finite chain ring and a finite field is defined. The Gray image of a linear constacyclic code over the finite chain ring is proved to be a distance invariant quasi-cyclic code over the finite field. It is shown that every code over the finite field, which is the Gray image of a cyclic code over the finite chain ring, is equivalent to a quasi-cyclic code.

Key words:

constacyclic code;Gray map;quasi-cyclic code;cyclic code