PRML Systems for Depth Multiplex Digital Magnetic Recording

用于深度复用数字磁记录的 PRML 系统

• 批准号: 11650384
• 负责人: OKAMOTO Yoshihiro
• 金额: $ 2.37万
• 依托单位: EHIME UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650384/
• 关键词: PRML Systems; Punctured RSC Code; Longitudinal Magnetic Recording; Iterative Decoding; Turbo Code; Perpendicular Magnetic Recording; RLL Code; HDD

Studies of signal processing to achieve high recording density of hard disk drives were performedand following results were obtained.(1) Modeling of R/W channelModels of both longitudinal and perpendicualr recording channels were obtained by R/Wexperiments using a spinstand, an arbitrary waveform generator and a digital storage oscillo-scope.(2) Punctured convolutional coded PRML system using two track recordingPunctured convolutional coded PRML system using two tracks with a half track width was demonstrated. Results show the system has an advantage over the linear density of a system using one track.(3) High rate punctured RSC codeRate 8n/8n+1 punctured convolutional encoder for a serially concatenated turbo coding was constructed and evaluated in the turbo coding and iterative decoding system. The results show the system has a bit error rate characteristic such as a waterfall.(4) Turbo coding and iterative decoding system with RLL constraint64/65(0,8) RLL code and turbo coding system which keeps RLL constraint are developed. It is clarified that the turbo coding with 64/65(0,8) RLL code and iterative decoding system exhibits a good performance over that with 8/9 (0,4/4) or 16/17 (0,6/6) RLL code.

对实现硬盘驱动器高记录密度的信号处理进行了研究，得到了以下结果。(1)R/W通道的模型化利用旋转支架、任意波形发生器和数字存储示波器，通过R/W实验获得了纵向和纵向记录通道的模型。(2)提出了一种双道半道记录的删余卷积码PRML系统。结果表明，该系统具有优于使用一个磁道的系统的线密度。(3)构造了一种适用于串行级联Turbo码的高码率删余RSC码8 n/8 n +1删余卷积编码器，并在Turbo码迭代译码系统中进行了性能分析。结果表明，该系统具有瀑布状的误码率特性。(4)提出了一种具有RLL约束的Turbo码和迭代译码系统64/65（0，8）RLL码以及保持RLL约束的Turbo码系统。结果表明，采用64/65（0，8）RLL码的Turbo码和迭代译码系统的性能优于采用8/9（0，4/4）或16/17（0，6/6）RLL码的Turbo码和迭代译码系统。

项目成果

M.Akamatsu, Y.Okamoto, H.Saito, H.Osawa, N.Honda and K.Ouchi: "Error Rate Performance of Perpendicular Magnetic Recording"Journal of the Magnetic Society of Japan. vol.24, no.4-2. 235-238 (2000)

M.Akamatsu、Y.Okamoto、H.Saito、H.Osawa、N.Honda 和 K.Ouchi：“垂直磁记录的错误率性能”日本磁学会期刊。

Y.Okamoto,M.Akamatsu,T.Kanaoka,H.Saito and H.Osawa: "BER Performance of PRML Systems for Perpendicular Recording Using Single Layered Medium"IEEE Transactions on Magnetics. 36・5. (2000)

Y. Okamoto、M. Akamatsu、T. Kanaoka、H. Saito 和 H. Osawa：“使用单层介质进行垂直记录的 PRML 系统的 BER 性能”IEEE Transactions on Magnetics（2000 年）。

Y.Okamoto,M.Sato,H.Osawa,H.Saito,H.Muraoka and Y.Nakamura: "MTR coded PRML systems for Perpendicular Magnetic Recording"Journal of Magnetism and Magnetic Materials. (2001)

Y.Okamoto、M.Sato、H.Osawa、H.Saito、H.Muraoka 和 Y.Nakamura：“用于垂直磁记录的 MTR 编码 PRML 系统”磁性与磁性材料杂志。

Y.Okamoto,T.Kanaoka,H.Osawa,H.Saito,H.Muraoka and Y.Nakamura: "BER Performance of Iterative Decoding in a Perpendicular Magnetic Recording Channel"IEEE Transactions on Magnetics. 37. (2001)

Y.Okamoto、T.Kanaoka、H.Osawa、H.Saito、H.Muraoka 和 Y.Nakamura：“垂直磁记录通道中迭代解码的 BER 性能”IEEE 磁学汇刊。

Y.Okamoto, H.Ashikaga, H.Saito and H.Osawa: "Performance Comparison of (1,7) RLL Coded PRML Systems and 16/17 (0, 6/6) Coded PRML Systems in Perpendicular Magnetic Recording Using Double Layered Media"The Trans. of IEICE C. vol.J83-C, no.1. 70-76 (2000)

Y.Okamoto、H.Ashikaga、H.Saito 和 H.Osawa：“使用双层垂直磁记录时 (1,7) RLL 编码 PRML 系统和 16/17 (0, 6/6) 编码 PRML 系统的性能比较