全息存储中的纠错码研究综述  

A survey of error correction codes in holographic storage

作　　者：于勤 吴非 张猛 谢长生 YU Qin;Wu Fei;ZHANG Meng;XIE Chang-sheng(Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074;School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学武汉光电国家研究中心,湖北武汉430074 [2]华中科技大学计算机科学与技术学院,湖北武汉430074

出　　处：《计算机工程与科学》2024年第4期571-579,共9页Computer Engineering & Science

基　　金：国家重点研发计划(2018YFA0701800,2022YFB2804300)。

摘　　要：大数据时代对于高密度大容量的存储技术需求与日俱增。与传统存储技术的按位记录方式不同,全息存储以二维数据页为读写单位,采用三维体存储模式,凭借存储密度高、数据转换速率快、节能安全以及超长期保存等优势,成为海量冷数据存储的有力竞争者。重点介绍了相位调制的同轴全息存储,分析了目前面向全息存储的纠错码研究现状,并详细介绍了一种参考光辅助的低密度奇偶校验LDPC码优化方案。In the era of big data,the demand for high-density and large-capacity storage technology is increasing day by day.Unlike traditional storage technologies that record data bit by bit,holographic storage uses two-dimensional data pages as the unit for reading and writing,adopting a three-dimensional volume storage mode.With advantages such as high storage density,fast data conversion rate,energy efficiency,safety,and ultra-long-term preservation,holographic storage is expected to become the strong competitor for mass cold data storage.This paper focuses on phase-modulated collinear holographic storage and analyzes the current research status of error correction codes for holographic storage.A detailed introduction is provided to an reference beam-assisted low-density parity-check(LDPC)code scheme.

关 键 词：全息存储 相位调制 可靠性 纠错码 低密度奇偶校验码 

分 类 号：O436[机械工程—光学工程]