Geometric WOM codes and coding strategies for multilevel flash memories

Autor:	Haymaker, Kathryn, Kelley, Christine A.
Rok vydání:	2012
Předmět:	Computer Science - Information Theory Mathematics - Combinatorics 94Bxx 05B25
Druh dokumentu:	Working Paper
Popis:	This paper investigates the design and application of write-once memory (WOM) codes for flash memory storage. Using ideas from Merkx ('84), we present a construction of WOM codes based on finite Euclidean geometries over $\mathbb{F}_2$. This construction yields WOM codes with new parameters and provides insight into the criterion that incidence structures should satisfy to give rise to good codes. We also analyze methods of adapting binary WOM codes for use on multilevel flash cells. In particular, we give two strategies based on different rewrite objectives. A brief discussion of the average-write performance of these strategies, as well as concatenation methods for WOM codes is also provided. Comment: Preliminary version, 15 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1206.5762 Zobrazit plný text záznamu View this record from Arxiv