摘要
在全息存储器中,数据页面通常要求是平衡的.即数据“0”和“1”的个数是相同的.解决该问题的一个有效办法就是采用平衡调制编码技术.根据这种要求,本文给出了一种8:12平衡调制码的编码原理和方法,该码字间的码距为4,因而具有纠错功能.采用本文介绍的方法,比简单的差分方法具有更高的编码效率,相应的编译码电路设计也不复杂,因而具有很强的实用性.
The demand for the data pages in holographic data storage is balanced . i. e. the page contains the same number of 0's and 1's. The balanced codes is an effective alternative method. In the paper, The basic principle of coding is described on 8:12 balanced modulation codes. The minimum hamming distance is four between codewords. The codes can provide a single error-correction capability. It has more code efficiency than differential codes. The circuit design of encoding and decoding isn't complexity. So,the method introduced in the paper has more practicability.
出处
《小型微型计算机系统》
CSCD
北大核心
2003年第4期733-736,共4页
Journal of Chinese Computer Systems
基金
国家重点基础研究973计划(项目编号G1999033006)资助.
