Performance comparisons for several mapping patterns of constant weight modulation code in holographic data storage

Duanrong Chen; Xiandeng Pei; Changsheng Xie

doi:10.1117/12.483273

17 September 2002 Performance comparisons for several mapping patterns of constant weight modulation code in holographic data storage

Duanrong Chen, Xiandeng Pei, Changsheng Xie

Author Affiliations +

Proceedings Volume 4930, Advanced Optical Storage Technology; (2002) https://doi.org/10.1117/12.483273
Event: Photonics Asia, 2002, Shanghai, China

Abstract

An m:n binary constant weight modulation code (BCWMC) can simplify signal decision and improve bit-error rate (BER) performance in holographic digital data storage. Computer simulations results show that different mapping patterns onto a spatial light modulator (SLM) cause different BER performance for the same code word length of a BCWMC on a severe two-dimensional (2-D) inter-symbol interference (ISI) channel with additive white Gaussian noise (AWGN). We employ two of self-definition, the adjacent degree of a pixel array (ADPA) and the degree of deflective center (DDC), to explain the reason. The calculations by the two of self-definition are in line with the simulations.

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Duanrong Chen, Xiandeng Pei, and Changsheng Xie "Performance comparisons for several mapping patterns of constant weight modulation code in holographic data storage", Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); https://doi.org/10.1117/12.483273

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