A new existence theorem on cyclic difference sets is introduced in this note.
本文介绍了一个循环差集的存在性定理。
For its close relation to cryptography, coding theory and sequences, almost difference sets have attracted many scholars' attention.
由于几乎差集与密码学、编码理论和序列设计有密切联系，它引起了不少学者的关注。
We obtained necessary conditions for the existence of perfect binary sequences, and presented a direct construction for a class of difference sets pairs.
我们得到了最佳二进序列存在的必要条件，给出一类差集偶的直接构造方法。
This paper presents an algebra method for constructing LDPC code based on Vandermonde matrix, which includes quasi-cyclic Q matrix and the perfect cyclic difference sets.
对准循环Q矩阵和完全循环差集进行了研究，在此基础上提出了一种LDPC码码族的代数构造方法。
In this paper we introduce special morphisms on difference sets and we prove that the quotient of the equivalence classes defined by special morphisms is a difference set.
在差分集中引入了特殊态射，证明了由特殊态射定义的等价类所作成的商还是差分集。
In this paper we introduce special morphisms on difference sets and we prove that the quotient of the equivalence classes defined by special morphisms is a difference set.
在差分集中引入了特殊态射，证明了由特殊态射定义的等价类所作成的商还是差分集。
应用推荐