| Presentation | 2019-12-05 A study on MAMR R/W channel modeling for signal processing Yuji Yamada, Yasuaki Nakamura, Madoka Nishikawa, Yasushi Kanai, Yoshihiro Okamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Microwave assisted magnetic recording (MAMR) draws attention as a recording technology to increase the recording densities in a hard disk drive (HDD), and development of signal processing systems suitable for MAMR has been required. In this report, in order to develop the suitable signal processing system for MAMR, we construct a read/write (R/W) model of MAMR using the discrete granular medium model, the magnetic field of recording head, and the effect of spin-torque oscillator (STO) obtained by micromagnetic simulation. Then, we evaluate the recorded condition by the medium magnetization and bit reliability. Furthermore, we evaluate the bit error rate (BER) performance of the low-density parity-check (LDPC) coding and iterative decoding as a signal processing system for the shingled magnetic recording (SMR) using the constructed MAMR R/W channel model. The results clarify that assisting by the STO improves the magnetization conditions so as to be close to the recording information, and it improves about 1.3 dB of the required signal-to-noise ratio (SNR) to achieve no-errors. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MAMR / Read/Write channel / LDPC coding and iterative decoding system |
| Paper # | MRIS2019-40 |
| Date of Issue | 2019-11-28 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2019/12/5(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ehime University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing and Others |
| Chair | Satoshi Matsunuma(Maxell) / Norihiko Ishii(NHK) |
| Vice Chair | |
| Secretary | (Toshiba) / (Kinki Univ.) |
| Assistant | Ikuya Tagawa(Tohoku Inst. of Tech.) / Hiroko Arai(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording & Information Storage / Technical Group on Multi-media Storage |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on MAMR R/W channel modeling for signal processing |
| Sub Title (in English) | |
| Keyword(1) | MAMR |
| Keyword(2) | Read/Write channel |
| Keyword(3) | LDPC coding and iterative decoding system |
| 1st Author's Name | Yuji Yamada |
| 1st Author's Affiliation | Ehime University(Ehime Univ.) |
| 2nd Author's Name | Yasuaki Nakamura |
| 2nd Author's Affiliation | Ehime University(Ehime Univ.) |
| 3rd Author's Name | Madoka Nishikawa |
| 3rd Author's Affiliation | Ehime University(Ehime Univ.) |
| 4th Author's Name | Yasushi Kanai |
| 4th Author's Affiliation | Niigata Institute of Technology(Niigata Institute of Technology) |
| 5th Author's Name | Yoshihiro Okamoto |
| 5th Author's Affiliation | Ehime University(Ehime Univ.) |
| Date | 2019-12-05 |
| Paper # | MRIS2019-40 |
| Volume (vol) | vol.119 |
| Number (no) | MRIS-326 |
| Page | pp.pp.7-12(MRIS), |
| #Pages | 6 |
| Date of Issue | 2019-11-28 (MRIS) |