文章首先将有限域Fp上常循环码的定义推广到有限环Zp^e上,讨论了环Zp^e上常循环码的结构;证明了Zp^e的某个Galois扩环上常循环码和循环码的等价关系;构造了环Zp^e上的一类特殊常循环码,得到此类常循环码和域上设计距离为d的BCH码有相似的性质:极小Hamming距离≥d。
The definition of constacyclic codes over finite fields Fp is extended to the finite ring Zp^e. The structure of constacyclic codes over the ring Zp^e. is introduced briefly. The equivalent relation be- tween constacyclic codes and cyclic codes on some Galois ring of Zp^e is proven. Some special constacyclic codes are given, which have similar properties to BCH codes with the designed distance d over the finite field: the minimum Hamming distance≥d.