Iterative soft-minimum mean-square error equalization for digital nonlinear page-oriented memories

Keskinöz, Mehmet (2006) Iterative soft-minimum mean-square error equalization for digital nonlinear page-oriented memories. Applied Optics, 45 (28). pp. 7401-7409. ISSN 0003-6935 (print) ; 1539-4522 (online)

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Digital page-oriented volume holographic memory (POVHM) is a promising candidate for nextgeneration ultrahigh capacity optical data storage technology. As the capacity of the POVHMs increases, the bit error rate performance of the system is degraded due to increased interpixel interference (IPI) and noise. To improve the system performance under these adverse effects and to increase the capacity, joint iterative soft equalizationdetection and error correction decoding might be attractive. To address that, by considering the nonlinearity inherent in the channel, an iterative soft equalization method that is optimized in the minimum mean-square error (MMSE) sense, called the iterative soft-MMSE (ISMMSE) equalization, is devised. The performance of the ISMMSE is evaluated by use of numerical experiments under different amounts of IPI and optical noise. Simulation results suggest that the ISMMSE is a good candidate for an ultrahigh capacity POVHM, which employs joint iterative equalizationdetection and decoding.
Item Type: Article
Uncontrolled Keywords: optical data storage; holographic and volume memories; optical memories
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Mehmet Keskinöz
Date Deposited: 12 Dec 2006 02:00
Last Modified: 04 Sep 2019 10:32

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