针对超高密度磁存储磁化跃迁噪声的约束编码

罗可; 李桅; 蹇雨根; 高宏宇; 张克政; 廖彦哲; 吴宇飞; 陈进才; 卢萍

doi:10.12263/DZXB.20230527

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针对超高密度磁存储磁化跃迁噪声的约束编码

学术论文 | 更新时间：2025-12-08

- 针对超高密度磁存储磁化跃迁噪声的约束编码
  增强出版
- Constrained Coding for Magnetization Transition Noise of Ultra-High Density Magnetic Storage
- 电子学报 2025年53卷第2期页码：483-492
- 作者机构：
  
  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
  3.信息存储系统教育部重点实验室，湖北武汉 430074
- 作者简介：
  
  罗可男，1993年1月出生，湖北武汉人.华中科技大学武汉光电国家研究中心博士后.主要研究方向为超高密度数据存储、磁存储器和光存储器读写系统、编码和信号处理. E-mail: luoke_kenleo@hust.edu.cn
  李桅女，2000年9月出生，湖北宜昌人.华中科技大学武汉光电国家研究中心硕士研究生.主要研究方向为磁记录及其系统. E-mail: 957603274@qq.com
  蹇雨根男，1998年1月出生，四川成都人.华中科技大学武汉光电国家研究中心博士研究生.主要研究方向为磁性存储器件. E-mail: ygjian@hust.edu.cn
  高宏宇男，2000年1月出生，湖南桃江人.华中科技大学武汉光电国家研究中心硕士研究生.主要研究方向为光盘信号处理. E-mail: 13874328030@163.com
  张克政男，2000年9月出生，福建三明人.华中科技大学计算机科学与技术学院硕士研究生.主要研究方向为高密度信息存储. E-mail: 846009097@qq.com
  廖彦哲男，2000年4月出生，湖北黄冈人.华中科技大学计算机科学与技术学院硕士研究生.主要研究方向为高密度信息存储技术研究. E-mail: lyz_master@hust.edu.cn
  吴宇飞男，1998年9月出生，安徽合肥人.华中科技大学计算机科学与技术学院硕士研究生.主要研究方向为高密度信息存储. E-mail: 1328988774@qq.com
  陈进才
  卢萍女，1966年10月出生，江西赣州人.华中科技大学计算机科学与技术学院副教授.主要研究方向为信息存储理论与技术、大数据处理与机器学习、图像处理与情感识别. E-mail: pinglu06@hust.edu.cn
- 基金信息：
  
  国家自然科学基金(62272178;61672246)
- DOI：10.12263/DZXB.20230527
  中图分类号： TP334.5;TQ581
- 收稿：2023-06-08，
  
  修回：2024-12-03，
  
  纸质出版：2025-02-25
- 稿件说明：
移动端阅览
罗可, 李桅, 蹇雨根, 等. 针对超高密度磁存储磁化跃迁噪声的约束编码[J]. 电子学报, 2025, 53(02): 483-492.

LUO Ke, LI Wei, JIAN Yu-gen, et al. Constrained Coding for Magnetization Transition Noise of Ultra-High Density Magnetic Storage[J]. Acta Electronica Sinica, 2025, 53(02): 483-492.
罗可, 李桅, 蹇雨根, 等. 针对超高密度磁存储磁化跃迁噪声的约束编码[J]. 电子学报, 2025, 53(02): 483-492. DOI：10.12263/DZXB.20230527

LUO Ke, LI Wei, JIAN Yu-gen, et al. Constrained Coding for Magnetization Transition Noise of Ultra-High Density Magnetic Storage[J]. Acta Electronica Sinica, 2025, 53(02): 483-492. DOI：10.12263/DZXB.20230527

摘要

随着磁存储记录密度的提高，记录位间距减小，磁化跃迁噪声显著提高，由此极大地影响回读信号质量.为了降低超高密度磁存储系统记录图案磁化跃迁噪声的干扰，本文分析研究了磁化跃迁噪声对回读信号质量的影响，提出了限制连续跃迁的最大跃迁游程长度受限（Maximum Transition Run，MTR）约束编码MTR（

=1），与允许连续跃迁的约束编码MTR（

=2）和MTR（

=3）相比，可有效抑制磁化跃迁噪声.通过实验测试了回读信号的检测效果，当信噪比为12 dB时，与MTR（

=2）、MTR（

=3）相比，MTR（

=1）相对误码率

分别降低了约30%和60%，证实了限制连续跃迁约束编码MTR（

=1）的数据检测可靠性更高.

Abstract

As the recording density of magnetic storage increases

the recording bit spacing decreases and the magnetization transition noise increases significantly

which greatly affects the quality of the readback signal. To mitigate the interference of magnetization transition noise problem among recording patterns in ultra-high density magnetic storage systems

the maximum transition run (MTR) constraint code MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634972&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635010&type=

5.84200001

)

which limits the continuous transition

is proposed to effectively suppress the magnetization transition noise compared with the constraint codes MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634984&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635012&type=

5.84200001

) and MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634999&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635021&type=

5.84200001

)

which allow continuous transitions. We investigate the detection effect of the readback signal experimentally. When the signal-to-noise ratio is 12 dB

the detection bit error rate (BER) of MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634972&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635010&type=

5.84200001

) is reduced by about 30% and 60% relatively compared with MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634984&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635012&type=

5.84200001

) and MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634999&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635021&type=

5.84200001

)

respectively. We confirmed that the MTR(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80634972&type=

2.96333337

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=80635010&type=

5.84200001

) constrained coding that forbids continuous transitions can achieve higher data detection reliability.

关键词

Keywords

references

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