On the equivalence of constacyclic codes over the ring F_p~m+uF_p~m
Haixia Li · 2013
The equivalence of constacyclic codes of an arbitrary length over the ring Fpm+uFpm is investigated,based on which,the structure of the gray images of a class of constacyclic codes of length N with GCD(N,p)=1 is determined.The mass formulas for all constacyclic codes and α-constacyclic self-dual codes of length pe are given,where α∈F*pm.