Likelihood-based error correction for holographic storage systems

Mark A. Neifeld; Wu Chun Chou

Likelihood-based error correction for holographic storage systems

Mark A. Neifeld, Wu Chun Chou

Electrical and Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

We consider a volume holographic memory (VHM) system that is corrupted by interpixel interference (IPI) and detector noise. We compare hard-decision Reed-Solomon (RS) decoding with both hard- and soft-decision algorithms for 2D array decoding. RS codes are shown to provide larger VHM storage capacity and density as compared with array codes when hard-decision methods are employed. A new likelihood-based soft-decision algorithm for 2D array decoding is described. The new decoding algorithm is motivated by iterative turbo-decoding methods and is capable of incorporating a priori knowledge of the corrupting IPI channel during decoding. The new algorithm is shown to offer VHM capacity and density performance superior to hard-decision RS methods.

Original language	English (US)
Pages (from-to)	48-53
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3802
State	Published - 1999
Event	Proceedings of the 1999 Advanced Optical Data Storage: Materials, Systems, and Interafces to Computers - Denver, CO, USA Duration: Jul 20 1999 → Jul 22 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

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title = "Likelihood-based error correction for holographic storage systems",

abstract = "We consider a volume holographic memory (VHM) system that is corrupted by interpixel interference (IPI) and detector noise. We compare hard-decision Reed-Solomon (RS) decoding with both hard- and soft-decision algorithms for 2D array decoding. RS codes are shown to provide larger VHM storage capacity and density as compared with array codes when hard-decision methods are employed. A new likelihood-based soft-decision algorithm for 2D array decoding is described. The new decoding algorithm is motivated by iterative turbo-decoding methods and is capable of incorporating a priori knowledge of the corrupting IPI channel during decoding. The new algorithm is shown to offer VHM capacity and density performance superior to hard-decision RS methods.",

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year = "1999",

language = "English (US)",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "Proceedings of the 1999 Advanced Optical Data Storage: Materials, Systems, and Interafces to Computers ; Conference date: 20-07-1999 Through 22-07-1999",

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TY - JOUR

T1 - Likelihood-based error correction for holographic storage systems

AU - Neifeld, Mark A.

AU - Chou, Wu Chun

PY - 1999

Y1 - 1999

N2 - We consider a volume holographic memory (VHM) system that is corrupted by interpixel interference (IPI) and detector noise. We compare hard-decision Reed-Solomon (RS) decoding with both hard- and soft-decision algorithms for 2D array decoding. RS codes are shown to provide larger VHM storage capacity and density as compared with array codes when hard-decision methods are employed. A new likelihood-based soft-decision algorithm for 2D array decoding is described. The new decoding algorithm is motivated by iterative turbo-decoding methods and is capable of incorporating a priori knowledge of the corrupting IPI channel during decoding. The new algorithm is shown to offer VHM capacity and density performance superior to hard-decision RS methods.

AB - We consider a volume holographic memory (VHM) system that is corrupted by interpixel interference (IPI) and detector noise. We compare hard-decision Reed-Solomon (RS) decoding with both hard- and soft-decision algorithms for 2D array decoding. RS codes are shown to provide larger VHM storage capacity and density as compared with array codes when hard-decision methods are employed. A new likelihood-based soft-decision algorithm for 2D array decoding is described. The new decoding algorithm is motivated by iterative turbo-decoding methods and is capable of incorporating a priori knowledge of the corrupting IPI channel during decoding. The new algorithm is shown to offer VHM capacity and density performance superior to hard-decision RS methods.

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M3 - Conference article

AN - SCOPUS:0033357969

SN - 0277-786X

VL - 3802

SP - 48

EP - 53

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Proceedings of the 1999 Advanced Optical Data Storage: Materials, Systems, and Interafces to Computers

Y2 - 20 July 1999 through 22 July 1999

ER -

Likelihood-based error correction for holographic storage systems

Abstract

ASJC Scopus subject areas

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