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2010•Japanese Journal of Applied PhysicsOpen access

Modified Two-Dimensional Soft Output Viterbi Algorithm for Holographic Data Storage

Jinyoung Kim, Jaejin Lee

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Abstract

We propose an alternate two-dimensional soft output Viterbi algorithm (2D SOVA) for holographic data storage. The proposed 2D SOVA uses a one-dimensional (1D) SOVA for both the horizontal and vertical directions. The 1D SOVA detects each direction with extrinsic information on the other direction's 1D SOVA. This proposed 2D SOVA has a better performance than a conventional 2D SOVA in terms of output bit error rate.

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We propose an alternate two-dimensional soft output Viterbi algorithm (2D SOVA) for holographic data storage. The proposed 2D SOVA uses a one-dimensional (1D) SOVA for both the horizontal and vertical directions. The 1D SOVA detects each direction with extrinsic information on the other direction's 1D SOVA. This proposed 2D SOVA has a better performance than a conventional 2D SOVA in terms of output bit error rate.

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Available abstract

We propose an alternate two-dimensional soft output Viterbi algorithm (2D SOVA) for holographic data storage. The proposed 2D SOVA uses a one-dimensional (1D) SOVA for both the horizontal and vertical directions. The 1D SOVA detects each direction with extrinsic information on the other direction's 1D SOVA. This proposed 2D SOVA has a better performance than a conventional 2D SOVA in terms of output bit error rate.

Key concepts: Soft output Viterbi algorithm, Viterbi algorithm, Computer science, Holographic data storage, Viterbi decoder, Algorithm, Holography, Iterative Viterbi decoding

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