Adaptive code modulation for 2D optical memories

Author

Selavo, Leo ; Chiarulli, Donald M. ; Levitan, Steven P.

Author_Institution

Dept. of Comput. Sci., Pittsburgh Univ., PA, USA

fYear

2002

fDate

2002

Firstpage

231

Lastpage

233

Abstract

Volumetric and page oriented optical storage systems have a great potential for high data density and high speed through page oriented data access (Haichuan Zhang et al, Proc. 18th IEEE Symp. Mass Storage Sys., 2001). However, in order to be practical, they have to maintain data integrity using error correction and modulation codes. The coding comes at a cost of spatial overhead of codeword size over the source data size, and processing time overhead for encoding and decoding. Our proposed adaptive modulation scheme strives to minimize both overheads. It achieves utilization of 74% with constant time complexity, which is competitive with other recently proposed schemes for page-oriented memories.

Keywords

adaptive codes; adaptive decoding; adaptive modulation; error correction; modulation coding; optical storage; paged storage; 2D optical memories; adaptive code modulation; codeword size; constant time complexity; data density; data integrity; decoding; encoding; error correction; modulation codes; page oriented data access; page oriented optical storage systems; page-oriented memories; processing time overhead; source data size; spatial overhead; volumetric optical storage systems; Adaptive coding; Adaptive optics; Costs; Decoding; Detectors; Encoding; High speed optical techniques; Modulation coding; Optical arrays; Optical modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

Print_ISBN

0-7803-7379-0

Type

conf

DOI

10.1109/OMODS.2002.1028625

Filename

1028625