| 用数字信号处理方法抑制DHSS中噪声的研究 |
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| 引用本文： | 贾克斌,敦书波,陶世荃,杨大鹏,覃鸣燕.用数字信号处理方法抑制DHSS中噪声的研究[J].北京工业大学学报,2003,29(3):296-300. |
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| 作者姓名： | 贾克斌 敦书波 陶世荃 杨大鹏 覃鸣燕 |
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| 作者单位： | 1. 北京工业大学,电子信息与控制工程学院,北京,100022
2. 北京工业大学应用数理学院,北京,100022 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);G1999033001; |
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| 摘 要： | 针对数字体全息存储系统(DHSS)中复杂噪声的特点,从数字通信中信道编码的观点出发,讨论了采用数字信号处理方法来抑制DHSS中噪声干扰的技术。为了克服传统调制码的弊端,提出了一种适用于DHSS新的调制码:调制-阵列码的编译码方法及其相应的软判决度量方法。实验结果表明,这些方法对降低误码率发挥了作用,特别是集等重码、纠错码和迭代译码等优点于一身的调制-阵列码的应用,可将误码率降低一二个数量级,并成功地实现了多媒体视频流的存储和回放。
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| 关 键 词： | 数字体全息存储系统 数字信号处理 调制-阵列码 噪声 |
| 文章编号： | 0254-0037(2003)03-0296-05 |
| 修稿时间： | 2003年7月7日 |
Research of Suppressing the Noise in Digital Holographic Storage System Using Digital Signal Processing Method |
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| JIA Ke-bin,DUN Shu-bo,TAO Shi-quan,YANG Da-peng,QIN Ming-yan.Research of Suppressing the Noise in Digital Holographic Storage System Using Digital Signal Processing Method[J].Journal of Beijing Polytechnic University,2003,29(3):296-300. |
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| Authors: | JIA Ke-bin DUN Shu-bo TAO Shi-quan YANG Da-peng QIN Ming-yan |
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| Abstract: | Based on the complicated noise characteristics in digital holographic storage system(DHSS), some methods of channel code in digital communication are introduced. In order to improve effect of traditional modulation code, a new modulation-array (MA) code and a novel soft-decision method corresponding to MA code are proposed for data processing in DHSS. Also developed based on the MA code is a new iterative decoding algorithm, which integrates principles of modulation code detection, soft-decision, array code error-correction and Turbo code decoding. The experimental results show that this MA code can be employed in the system and can reduce effectively the influence of noise. |
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| Keywords: | digital holographic storage system(DHSS) digital signal processing(DSP) modulation- array (MA) code noise |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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