TR#: | CS-2005-09 |
Class: | CS |
Title: | Lowest-density MDS codes over extension alphabets |
Authors: | Erez Louidor, Ron M. Roth |
CS-2005-09.pdf | |
Abstract: | Let F be a finite field and b be a positive integer. A construction is presented of codes over the alphabet F^b with the following three properties: (i) the codes are MDS over F^b, (ii) they are linear over F, and (iii) they have systematic generator and parity-check matrices over F with the smallest possible number of nonzero entries. Furthermore, for the case F = GF(2), the construction is the longest possible among all codes that satisfy properties (i)-(iii). |
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