PRML Systems Coping with Jitter-Like Medium Noise in Perpendicular Magnetic Recording
PRML 系统应对垂直磁记录中的类抖动介质噪声
基本信息
- 批准号:13650412
- 负责人:
- 金额:$ 2.3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2001
- 资助国家:日本
- 起止时间:2001 至 2002
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Performance improvement of PRML sstem to achieve high recording density of information storage systems is studied. Effective PRML systems for jitter-like medium noise in perpendicular magnetic recording were performed by computer simulation and R/W experiments and following results were obtained.(1) AR (Autoregressive) channel modeling of PR channelIt is clarified that PR channels in perpendicular magnetic recording with jitter-like medium noise can be modeled by AR channel model well.(2) Application of AR chanel model to Viterbi detectorPerformance improvement of PRML system is achieved by applying AR channel model to Viterbi detector. Furthermore, it is clarified that performance of turbo decoding system is also improved by application of AR chanel model to APP decoder.(3) Error pattern analysis of PRML systems in perpendicular magnetic recordingError patterns of PRML system and PRML-AR system were studied in perpendicular magnetic recording. It is clarified that error patterns change with proportion of jitter-like noise.(4) Performance improvement by combination of PRML-AR system and postprocessor Most of decoding errors in PRML-AR system can be corrected by postprocessor. It is clarified that the big performance improvement is obtained by the combination.
研究了PRML系统的性能改进,以实现信息存储系统的高记录密度。通过计算机模拟和读写实验,实现了一种有效的垂直磁记录类抖动介质噪声的伪随机标记语言系统,得到了如下结果。(1)PR通道的AR通道模型研究表明,AR通道模型可以很好地模拟具有类抖动介质噪声的垂直磁记录中的PR通道。(2)AR信道模型在Viterbi检测器中的应用将AR信道模型应用到Viterbi检测器中,实现了PRML系统性能的改善。此外,还阐明了AR信道模型在APP译码器中的应用也提高了Turbo译码系统的性能。(3)PRML系统在垂直磁记录中的误差模式分析研究了PRML系统和PRML-AR系统在垂直磁记录中的误差模式。它澄清了错误模式的变化与抖动样噪声的比例。(4)PRML-AR系统与后处理器相结合的性能改进PRML-AR系统中的大部分译码错误都可以通过后处理器得到纠正。结果表明,该组合方式能使系统性能得到较大的改善.
项目成果
期刊论文数量(13)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
岡本好弘, 増成訓之, 山本裕文, 大沢寿, 斎藤秀俊, 村岡裕明, 中村慶久: "垂直磁気記録におけるARチャネルモデルを用いたPRML方式の性能改善"電子情報通信学会 論文集C. (採録決定済). (2003)
Yoshihiro Okamoto、Noriyuki Masunari、Hirofumi Yamamoto、Hisashi Osawa、Hidetoshi Saito、Hiroaki Muraoka、Yoshihisa Nakamura:“垂直磁记录中使用 AR 通道模型的 PRML 方法的性能改进”IEICE Proceedings C.(已接受)(2003 年)
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Y.Okamoto, N.Masunari, H.Yamamoto, H.Osawa, H.Saito, H.Muraoka and Y.Nakamura: "Jitter-like noise cancellation using AR model of PR channel in perpendicular magnetic recording"IEEE Trans.on Magn.. vol.38, no.5. 2349-2351 (2002)
Y.Okamoto、N.Masunari、H.Yamamoto、H.Osawa、H.Saito、H.Muraoka 和 Y.Nakamura:“在垂直磁记录中使用 PR 通道的 AR 模型实现类抖动噪声消除”IEEE Trans.on Magn
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Y.Okamoto, T.Kanaoka, H.Osawa and H.Saito, H.Muraoka. And Y.Nakamura: "Performance evaluation of serially concatenated turbo coding systems in perpendicular magnetic recording"The journal of the institute of image information and television engineers. vol
Y.Okamoto、T.Kanaoka、H.Osawa 和 H.Saito、H.Muraoka。
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Y.Okamoto, N.Masunari, H.Yamamoto, H.Osawa, H.Saito, H.Muraoka, Y.Nakamura: "Jitter-like noise cancellation using AR model of PR channel in perpendicular magnetic recording"IEEE Transactions on Magnetics. 38・5. 2349-2351 (2002)
Y.Okamoto、N.Masunari、H.Yamamoto、H.Osawa、H.Saito、H.Muraoka、Y.Nakamura:“在垂直磁记录中使用 PR 通道的 AR 模型进行类抖动噪声消除”IEEE 磁学学报。 38・5。2349-2351(2002)
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大沢, 篠原, 岡本, 斎藤, 村岡, 中村: "垂直磁気記録におけるNPML方式の性能評価"電子情報通信学会論文誌. J85-C・5. (2003)
Osawa、筱原、冈本、斋藤、Muraoka、Nakamura:“垂直磁记录中的 NPML 方法的性能评估”电子信息通信工程师学会会刊 J85-C·5。
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OKAMOTO Yoshihiro其他文献
OKAMOTO Yoshihiro的其他文献
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