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首页> 外文期刊>Journal of the Optical Society of America, A. Optics, image science, and vision >Soft-decision array decoding for volume holographic memory systems
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Soft-decision array decoding for volume holographic memory systems

机译:体全息存储系统的软判决阵列解码

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摘要

We study the use of soft-decision array decoding in a volume holographic memory (VHM) system that is corrupted by interpixel interference (IPI) and detector noise. Soft-decision methods can unify equalization and error decoding. A highly parallel array decoder is presented in the context of two-dimensional low-pass channel mitigation and error correction. The new decoding algorithm is motivated by iterative turbo-decoding methods and is capable of incorporating a priori knowledge of the corrupting IPI channel during decoding. The resulting joint detection decoding algorithm is shown to offer VHM capacity and density performance superior to that of hard-decision n = 255 Reed-Solomon codes in concatenation with a Wiener filter. (C) 2001 Optical Society of America. [References: 36]
机译:我们研究了在体积全息存储器(VHM)系统中使用软判决阵列解码的情况,该系统受到像素间干扰(IPI)和检测器噪声的破坏。软判决方法可以统一均衡和错误解码。在二维低通信道缓解和纠错的背景下提出了高度并行的阵列解码器。新的解码算法受迭代涡轮解码方法的启发,并且能够在解码过程中合并损坏IPI信道的先验知识。结果表明,与维纳滤波器相结合,最终的联合检测解码算法可提供优于硬判决n = 255 Reed-Solomon码的VHM容量和密度性能。 (C)2001年美国眼镜学会。 [参考:36]

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