| Project/Area Number |
23560457
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Ehime University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Yasuaki 愛媛大学, 大学院理工学研究科, 講師 (50380259)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 情報ストレージ / HDD / 高密度化 / SMR / 信号処理 / ITI / シングル磁気記録 / グラニュラ媒体 / 媒体雑音 / トラック間干渉（ITI) / シングル磁気記録（SMR) / ２次元磁気記録（TDMR) / ニューロ等化器 / ITIキャンセラ / LDPC符号 / ターボ等化 / 狭トラック / クロストーク / 瓦記録 |
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| Research Abstract |
Shingled magnetic recording is being applied to achieve narrow-track recording in HDD. In the system, Intertrack interference arises due to overwriting the following track on the leading track at recording as well as cross-talk due to the sensitivity of reader extending into the adjacent tracks. To observe the phenomena, we made a R/W simulator which records data sequence on a granular media made in computer by write head and obtain the waveform from the media by read head. Signal and noise components are visualized for magnetic grains, and the influence to signal processing is clarified. In addition the performance of signal processing systems such as two-dimensional neuro-canceller and iterative decoding using non-binary low-density parity-check code is clarified.
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