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Proceedings Article

Performance comparison of equalization/detection schemes for magnification error-dominated volume holographic storage channel

[+] Author Affiliations
Mehmet Keskinoz

Sabanci Univ. (Turkey)

B.V.K. Vijaya Kumar

Carnegie Mellon Univ. (USA)

Proc. SPIE 5380, Optical Data Storage 2004, 602 (September 9, 2004); doi:10.1117/12.555754
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From Conference Volume 5380

  • Optical Data Storage 2004
  • B. V. K. Vijaya Kumar; Hiromichi Kobori
  • Monterey, CA | April 18, 2004

abstract

Data pages retrieved from a volume holographic storage channel (VHSC) suffer from inter-symbol interference (ISI) and noise. Assuming ISI does not change spatially (i.e., stationary), 2-D equalization/detection schemes has been previously developed for quadratic channels like VHSC. In practice, however, the point spread function of a VHSC changes spatially due to magnification and misalignment errors. In this paper, we develop a channel model for magnification error (ME) dominated VHSC and also evaluate the effect of ME on the equalization/detection performance. Results indicate that the recently introduced iterative magnitude-squared decision feedback equalization (IMSDFE) method is more robust to magnification error compared to linear minimum mean squared-error (LMMSE) equalization and adaptive threshold detection (ATD).

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Mehmet Keskinoz and B.V.K. Vijaya Kumar
"Performance comparison of equalization/detection schemes for magnification error-dominated volume holographic storage channel", Proc. SPIE 5380, Optical Data Storage 2004, 602 (September 9, 2004); doi:10.1117/12.555754; http://dx.doi.org/10.1117/12.555754


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