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arXiv 2005.06823cs.ITmath.IT
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分数重复码的最优最小距离

On the Optimal Minimum Distance of Fractional Repetition Codes

Bing Zhu, Kenneth W. Shum, Weiping Wang, Jianxin Wang

摘要:

分数重复(FR)码是一类具有修复效率的擦除码,其可以以最佳修复带宽和复杂度来恢复失效的存储节点。本文研究了FR码的最小距离问题,即失效导致存储文件不可恢复丢失的节点数最少的问题。我们认为上界的最小距离,并提出了几个家庭的显式FR码达到这些界限。最优结构分别来自正则图和组合设计。

英文摘要:

Fractional repetition (FR) codes are a class of repair efficient erasure codes that can recover a failed storage node with both optimal repair bandwidth and complexity. In this paper, we study the minimum distance of FR codes, which is the smallest number of nodes whose failure leads to the unrecoverable loss of the stored file. We consider upper bounds on the minimum distance and present several families of explicit FR codes attaining these bounds. The optimal constructions are derived from regular graphs and combinatorial designs, respectively.

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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