摘要
本文根据文［１］提出的极大等重等距码的概念，利用等重等距码窗口矩阵设计原理，对（ｎ，４，ｍ）极大等重等距码结构重新进行了分析．讨论了码重基本情形，对称情形与非对称情形等几类特殊结构类型，并组合了各种不同结构的极大等重等距码，其结果比较完整地解决了（ｎ，４，ｍ）极大等重等距码的结构等价类问题．
Based-on the concept of unextendable code with constant weight and distance given in paper [1], we use design Principle Of the window matrix for constant weight and distance codes, so that the structure of unextendable code with constant weight and distance for (n,4,m) are analysed once analysed once again. At the same time,a few peculiar structure type;basic ease, symmetrical cased and non-symmetrical cased in weight of code are discussed,We have combined the structure problem of different equivalent classes of unextendable code with constant weight and distance with Parameters (n,4,m) in this paper.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第1期120-122,共3页
Acta Electronica Sinica
关键词
等距码
窗口码矩阵
等重等距码
non-linear constant weigh codes
constant distance codes
window code matrix
classes analysis
permutation combinations
