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arXiv · 1601.07122

Binary Codes with Locality for Multiple Erasures Having Short Block Length

S. B. Balaji·K. P. Prasanth·P. Vijay Kumar
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Abstract

The focus of this paper is on linear, binary codes with locality having locality parameter $r$, that are capable of recovering from $t\geq 2$ erasures and that moreover, have short block length. Both sequential and parallel (through orthogonal parity checks) recovery is considered here. In the case of parallel repair, minimum-block-length constructions for general $t$ are discussed. In the case of sequential repair, the results include (a) extending and characterizing minimum-block-length constructions for $t=2$, (b) providing improved bounds on block length for $t=3$ as well as a general construction for $t=3$ having short block length, (c) providing short-block-length constructions for general $r,t$ and (d) providing high-rate constructions for $r=2$ and $t$ in the range $4 \leq t \leq7$. Most of the constructions provided are of binary codes.

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S. B. Balaji, K. P. Prasanth, P. Vijay Kumar. 2016-01-26. Binary Codes with Locality for Multiple Erasures Having Short Block Length. https://doi.org/10.1109/isit.2016.7541380

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