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环R_k上的1+u_k-常循环码 被引量:1

1 + u_k- constacyclic codes over R_k
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摘要 通过环Rk上的循环码与1+uk-常循环码的对应关系,给出了环Rk上长为奇数的1+uk-常循环码的刻画.定义了一个Gray映射,证明了Rk上的1+uk-常循环码在该映射下的像是长为2kn指数为2k-1的二元准循环码. By using the corresponding relationship between the 1 + uk- constacyclic codes and cyclic codes over Rk,the 1 + uk- constacyclic codes over Rkof odd length are characterized. A Gray-map is obtained and it is also proved that the images of 1 + uk- constacyclic codes over these rings under the Gray-map are binary quasi-cyclic codes of index 2k- 1and length 2kn.
作者 孔波 郑喜英
出处 《南阳师范学院学报》 CAS 2015年第6期5-8,共4页 Journal of Nanyang Normal University
基金 河南省特色专业数学教育专业资助项目 河南教育学院应用数学重点学科资助项目 郑州市科技局科技攻关项目(20141375)
关键词 常循环码 循环码 GRAY映射 准循环码 constacyclic code cyclic code gray map quasi cyclic code
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参考文献9

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