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arXiv 2501.09710cs.ITmath.IT
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关于等距单轨道循环与准循环子空间码

On equidistant single-orbit cyclic and quasi-cyclic subspace codes

Mahak, Maheshanand Bhaintwal

AI总结:

本文研究等距单轨道循环与准循环子空间码,借助循环差集证明仅存在平凡等距单轨道循环子空间码,并进一步探究了向日葵型等距单轨道准循环子空间码。

摘要:

若一个码的任意两个不同码字之间的距离均相等,则称其为等距码。本文研究了等距单轨道循环子空间码与准循环子空间码。由$\u211d_{q^n}$中的子空间$U$生成的轨道码满足:$U$在$\u211d_q$上的维数为$t$或$n-t$,其中$t=\u211d_{\u211d_q}(\u2112\u2113ab(U)\u222a\{0\})$,这类轨道码是等距的,被称为平凡等距轨道码。利用循环差集的概念,我们证明了仅存在平凡等距单轨道循环子空间码。此外,我们还探究了等距单轨道准循环子空间码,重点研究了其中属于向日葵型的码。

英文摘要:

A code is said to be equidistant if the distance between any two distinct codewords of the code is the same. In this paper, we have studied equidistant single-orbit cyclic and quasi-cyclic subspace codes. The orbit code generated by a subspace $U$ in $\mathbb{F}_{q^n}$ such that the dimension of $U$ over $\mathbb{F}_q$ is $t$ or $n-t$, $\mbox{where}~t=\dim_{\mathbb{F}_q}(\mbox{Stab}(U)\cup\{0\})$, is equidistant and is termed a trivial equidistant orbit code. Using the concept of cyclic difference sets, we have proved that only the trivial equidistant single-orbit cyclic subspace codes exist. Further, we have explored equidistant single-orbit quasi-cyclic subspace codes, focusing specifically on those which are sunflowers.

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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