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arXiv 2007.15253cs.ITmath.IT
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利用子空间多项式修复Reed-Solomon码

Repairing Reed-Solomon Codes via Subspace Polynomials

Hoang Dau, Dinh Thi Xinh, Han Mao Kiah, Tran Thi Luong, Olgica Milenkovic

摘要:

我们提出了新的Reed-Solomon码的修复方案,使用子空间多项式,从而推广了以前的作品在文献中,采用跟踪多项式。Reed-Solomon码在$\mathbb{F}_{q^\ell}$上,并且具有冗余$r = n-k \geq q^m$、$1\leq m\leq \ell$,其中$n$和$k$分别是码长和维数。特别是,对于一个擦除,我们表明,我们的计划可以实现最佳的修复带宽时,$n=q^\ell$和$r = q^m,$的所有$1 \leq m \leq \ell$。对于两个擦除,我们的方案使用相同的带宽,每次擦除的单擦除方案,$\ell/m$是$q$的幂,和$\ell=q^a$,$m=q^b-1>1$($a \geq b \geq 1$),和$m\geq \ell/2$时,$\ell$是偶数和$q$是2的幂。

英文摘要:

We propose new repair schemes for Reed-Solomon codes that use subspace polynomials and hence generalize previous works in the literature that employ trace polynomials. The Reed-Solomon codes are over $\mathbb{F}_{q^\ell}$ and have redundancy $r = n-k \geq q^m$, $1\leq m\leq \ell$, where $n$ and $k$ are the code length and dimension, respectively. In particular, for one erasure, we show that our schemes can achieve optimal repair bandwidths whenever $n=q^\ell$ and $r = q^m,$ for all $1 \leq m \leq \ell$. For two erasures, our schemes use the same bandwidth per erasure as the single erasure schemes, for $\ell/m$ is a power of $q$, and for $\ell=q^a$, $m=q^b-1>1$ ($a \geq b \geq 1$), and for $m\geq \ell/2$ when $\ell$ is even and $q$ is a power of two.

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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