Two-Dimensional Modulation for Holographic Data Storage Systems
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概要
- 論文の詳細を見る
Page-oriented holographic data storage systems (HDSSs) generally use spatial light modulators (SLMs) to generate two-dimensional (2D) digital patterns, so-called data pages. These data pages are stored via interference patterns of the object and reference beam in the holographic medium and are retrieved from the medium by exposing it to the reference beam. The reconstructed data pages are then detected by a matrix detector. One important challenge in designing an HDSS is to develop a suitable modulation, which takes into account the specific characteristics of the transfer channel and enables high data capacity, high data transfer rate and low symbol error rate (SER). In this paper, we present a new method for modulating data in an HDSS. The main idea is to adapt the general concept of 2D run-length limited modulation (RLL) to a numerically more efficient implementation usable for HDSS. We demonstrate that this 2D block coding method with a constant weight and a sparse code increases the amount of user data per data page, while the SER remains low compared with standard sparse modulation coding. This results in a higher data rate and higher data density.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-07-25
著者
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Richter Hartmut
Deutsche Thomson Ohg
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PRZYGODDA Frank
Deutsche Thomson OHG
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KNITTEL Joachim
Deutsche Thomson OHG
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MALKI Oliver
Deutsche Thomson OHG
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TRAUTNER Heiko
Deutsche Thomson OHG
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Richter Hartmut
Deutsche Thomson OHG, Hermann-Schwer-Str. 3, D-78048, Germany
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Malki Oliver
Deutsche Thomson OHG, Hermann-Schwer-Str. 3, D-78048, Germany
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Knittel Joachim
Deutsche Thomson OHG, Hermann-Schwer-Str. 3, D-78048, Germany
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Przygodda Frank
Deutsche Thomson OHG, Hermann-Schwer-Str. 3, D-78048, Germany
関連論文
- Special Phase Mask and Related Data Format for Page-Based Holographic Data Storage Systems
- Data Detection Methods for Holographic Data Storage Systems
- Shift Selectivity Calculation for Finite-Volume Holograms with Half-Cone Reference Beams
- Spherical Aberration Detection Scheme for Optical Pickup Units Using the Push-Pull Signal
- Two-Dimensional Modulation for Holographic Data Storage Systems
- Shift Selectivity in Common-Aperture Holography
- Investigation of a Reflective Counter-Propagating Holographic Setup
- Material Consumption and Crosstalk Characteristics of Different Holographic Storage Concepts
- Effects of Aberrations in Volume Holographic Memory with Spherical Reference Beams