Equally scattered interleaving for holographic data storage systems

Abstract

In this paper, we propose a new interleaving method for solving burst errors that occur in page oriented data storage channels. We compare the performance with other interleaving techniques. Burst errors frequently occur in holographic data storage channels. Many interleaving schemes have been proposed to solve these burst error problems. At 1024 × 1024 pixels, the proposed interleaving scheme provides 1.5–2.0 dB signal-to-noise ratio (SNR) gain compared to other interleaving schemes. Also, at 256 × 256 pixels, the proposed interleaving scheme provides 4.5–5.0 dB more SNR gain compared to other interleavers.

A two-dimensional partial response maximum likelihood detection scheme for misalignment compensation in holographic data storage systems

“…5,6) Therefore, strong signal processing techniques are necessarily required to achieve high-density recording in HDS systems. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] Several 2D partial response maximum likelihood (PRML) detection schemes have been introduced for HDS systems. [24][25][26][27][28] Although these schemes show good bit error rate (BER) performance in the presence of a strong 2D ISI, the BER performance of these schemes is seriously degraded when the misalignment is dominant.…”

Enhanced 2/3 four-ary modulation code using soft-decision Viterbi decoding for four-level holographic data storage systems

“…7,8) To overcome these problems, various powerful modulation codes and error-correction codes (ECCs) should be required in HDS systems. [9][10][11][12][13][14][15][16][17][18][19][20][21][22] Various modulation codes have been introduced to mitigate the interference problem. 7,8,[23][24][25][26] In Refs.…”