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arXiv 0910.3084cs.ITmath.IT
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环Z_2xZ_4上的自对偶码

Self-Dual Codes over Z_2xZ_4

J. Borges, S. T. Dougherty, C. Fernandez-Cordoba

摘要:

$\Z_2\times\Z_4$上的自对偶码是$\Z_2^α\times\Z_4^β$的子群,它们在与二进制汉明方案相关的内积下等于它们的正交。定义了三种自对偶码。对于每种类型,建立可能的值$α,β$,使得存在代码$\C\subseteq \Z_2^α\times\Z_4^β$。此外,还给出了每种类型和每种可能对$(α,β)$的$\add$ -线性码的构造.最后,不变理论的标准技术来描述每种类型的权重枚举。

英文摘要:

Self-dual codes over $\Z_2\times\Z_4$ are subgroups of $\Z_2^α\times\Z_4^β$ that are equal to their orthogonal under an inner-product that relates to the binary Hamming scheme. Three types of self-dual codes are defined. For each type, the possible values $α,β$ such that there exist a code $\C\subseteq \Z_2^α\times\Z_4^β$ are established. Moreover, the construction of a $\add$-linear code for each type and possible pair $(α,β)$ is given. Finally, the standard techniques of invariant theory are applied to describe the weight enumerators for each type.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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