Article
Irregular Repeat-Accumulate Codes for Volume Holographic Memory Systems
Applied Optics
(2004)
Abstract
We investigate the application of irregular repeat-accumulate (IRA) codes in volume holographic memory (VHM) systems. We introduce methodologies to design efficient IRA codes. We show that a judiciously designed IRA code for a typical VHM can be as good as the optimized irregular low-density-parity-check codes while having the additional advantage of lower encoding complexity. Moreover, we present a method to reduce the error-floor effect of the IRA codes in the VHM systems. This method explores the structure of the noise pattern in holographic memories. Finally, we explain why IRA codes are good candidates for the VHM systems.
Disciplines
Publication Date
September, 2004
Publisher Statement
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-43-27-5222. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Citation Information
Hossein Pishro-Nik and Faramarz Fekri. "Irregular Repeat-Accumulate Codes for Volume Holographic Memory Systems" Applied Optics Vol. 43 Iss. 27 (2004) Available at: http://works.bepress.com/hossein_pishro-nik/3/