arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.08798cs.ITmath.IT
收藏

余维为4的双扩展Reed-Solomon码的陪集重量分布

On cosets weight distributions of the doubly-extended Reed-Solomon codes of codimension 4

Alexander A. Davydov, Stefano Marcugini, Fernanda Pambianco

摘要:

我们考虑了余维为$4$的$[q+1,q-3,5]_q3$广义双扩展Reed-Solomon码作为射影空间$\mathrm{PG}(3,q)$中与扭立方相关联的码.基于$\mathrm{PG}(3,q)$的点-平面关联矩阵,我们得到了所考虑码的所有陪集的权3向量的数目。这使我们能够通过陪集的权重分布对陪集进行分类,并获得这些分布。陪集的权是陪集中任何向量的最小汉明权。对于具有不同权分布的等权陪集,我们证明了分布的$w$ -th分量之差$3<w\le q+1$唯一地由分布的$3$ -rd分量之差决定.这意味着一个有趣的(在某种意义上意想不到的)对称性所获得的分布。

英文摘要:

We consider the $[q+1,q-3,5]_q3$ generalized doubly-extended Reed-Solomon code of codimension $4$ as the code associated with the twisted cubic in the projective space $\mathrm{PG}(3,q)$. Basing on the point-plane incidence matrix of $\mathrm{PG}(3,q)$, we obtain the number of weight 3 vectors in all the cosets of the considered code. This allows us to classify the cosets by their weight distributions and to obtain these distributions. The weight of a coset is the smallest Hamming weight of any vector in the coset. For the cosets of equal weight having distinct weight distributions, we prove that the difference between the $w$-th components, $3<w\le q+1$, of the distributions is uniquely determined by the difference between the $3$-rd components. This implies an interesting (and in some sense unexpected) symmetry of the obtained distributions.

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。

↑