Improvement of bit error rate in holographic data storage using the extended high-frequency enhancement filter

Do Hyung Kim, Janghyun Cho, Hyungbae Moon, Sungbin Jeon, No Cheol Park, Hyunseok Yang, Kyoung Su Park, Young Pil Park

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Optimized image restoration is suggested in angular-multiplexing-page-based holographic data storage. To improve the bit error rate (BER), an extended high frequency enhancement filter is recalculated from the point spread function (PSF) and Gaussian mask as the image restoration filter. Using the extended image restoration filter, the proposed system reduces the number of processing steps compared with the image upscaling method and provides better performance in BER and SNR. Numerical simulations and experiments were performed to verify the proposed method. The proposed system exhibited a marked improvement in BER from 0.02 to 0.002 for a Nyquist factor of 1.1, and from 0.006 to 0 for a Nyquist factor of 1.2. Moreover, more than 3 times faster performance in calculation time was achieved compared with image restoration with PSF upscaling owing to the reductions in the number of system process and calculation load.

Original languageEnglish
Article number09LD06
JournalJapanese journal of applied physics
Issue number9 PART3
Publication statusPublished - 2013 Sep 1


All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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