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On the Maximal Code Length of Optimal Linear LRC Codes with Availability

机译:具有可用性的最优线性LRC码的最大码长

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A code over finite alphabet is said to be locally recoverable (LRC) if each code symbol is function of small number of other symbols forming the recovering set [1], [2], [3], [4], [5]. These codes were first proposed in [1] and immediate become popular due to obvious applications in distributed and cloud storage systems. Natural generalization of LRC codes is LRC codes with availability in which each code symbol has more than one disjoint recovering set. A LRC codes with availability is said to be optimal if its minimum distance achieves the Singleton- like bound developed by Kruglik et. al in this paper we study the maximum code length of q-ary optimal LRC with availability and then derive some structural properties.
机译:如果每个代码符号是构成恢复集[1],[2],[3],[4],[5]的少量其他符号的函数,则表示有限字母上的代码是本地可恢复的(LRC)。这些代码最早在[1]中提出,由于在分布式和云存储系统中的明显应用而立即流行。 LRC代码的自然概括是具有可用性的LRC代码,其中每个代码符号具有多个不相交的恢复集。如果LRC代码的最小距离达到了Kruglik等人开发的类似Singleton的界限,则认为具有可用性的LRC代码是最佳的。在本文中,我们研究了具有可用性的q元最佳LRC的最大代码长度,然后推导了一些结构特性。

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