Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Two-Dimensional Equalization Using Bilinear Recursive Polynomial Model for Holographic Data Storage Systems

Not Accessible

Your library or personal account may give you access

Abstract

A conventional schematic of holographic data storage (HDS) with the 4-fL (focal length) architecture is described in Fig. 1 [1]. The input data page is displayed on the spatial light modulator (SLM) and the modulated signals pass through the frequency-plane aperture which is like a low pass filter. As aperture width is smaller, areal density becomes larger, and two-dimensional (2D) inter-symbol interference (ISI) becomes severe. In addition, nonlinearity of HDS channel caused by intensity detection using charge-coupled detector (CCD) worsen the ISI problem. In nonlinear channels, the conventional linear equalizers have performance limitation. Therefore, we need a type of nonlinear equalizer which mitigates 2D ISI effectively for HDS systems. Most popular nonlinear signal processing are Volterra series and multivariate polynomial model [2]. However, these models are too complex to use since a large number of equalizer coefficients are needed. As a type of nonlinear equalizer, the bilinear recursive polynomial perceptron (BRP) is well kwon to have a good performance in spite of its simple structure [3]. BRP with decision feedback equalizer (BRPDFE) which has a better performance than the conventional BRP equalizer (BRPE) is proposed in [4]. In this paper, we extend the conventional 1D BRP model to a 2D BRP model for HDS systems. In order to verify that the proposed method is good for HDS systems, the proposed BRP and BRPDFE are compared with conventional adaptive decision feedback equalizer (DFE) and partial response maximum likelihood (PRML).

© 2011 Optical Society of America

PDF Article
More Like This
Simplified Two-dimensional Partial Response Maximum Likelihood Detection Method Using A priori information for Holographic Data Storage Systems

Gyuyeol Kong and Sooyong Choi
OTuD4 Joint International Symposium on Optical Memory and Optical Data Storage (ODS) 2011

Iterative Two-dimensional Partial Response Maximum Likelihood Detection Method with Constant-Weight Constraint Code for Holographic Data Storage Systems

Gyuyeol Kong and Sooyong Choi
OMD11 Joint International Symposium on Optical Memory and Optical Data Storage (ODS) 2011

Turbo equalization between Partial Response Maximum Likelihood Detector and Viterbi decoder for 2/4 Modulation Code in Holographic Data Storage Systems

Gyuyeol Kong and Sooyong Choi
OTuD8 Joint International Symposium on Optical Memory and Optical Data Storage (ODS) 2011

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved