Coding with Constraints: Minimum Distance Bounds and Systematic Constructions

Autor:	Halbawi, Wael, Thill, Matthew, Hassibi, Babak
Rok vydání:	2015
Předmět:	Computer Science - Information Theory
Druh dokumentu:	Working Paper
Popis:	We examine an error-correcting coding framework in which each coded symbol is constrained to be a function of a fixed subset of the message symbols. With an eye toward distributed storage applications, we seek to design systematic codes with good minimum distance that can be decoded efficiently. On this note, we provide theoretical bounds on the minimum distance of such a code based on the coded symbol constraints. We refine these bounds in the case where we demand a systematic linear code. Finally, we provide conditions under which each of these bounds can be achieved by choosing our code to be a subcode of a Reed-Solomon code, allowing for efficient decoding. This problem has been considered in multisource multicast network error correction. The problem setup is also reminiscent of locally repairable codes. Comment: Submitted to ISIT 2015
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1501.07556 Zobrazit plný text záznamu View this record from Arxiv