| Presentation | 2018-12-06 A study of LLR modulation using neural network decision Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Hisashi Osawa, Yoshihiro Okamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In our previous research, we focused on a log-likelihood ratio (LLR) computed as the decoding reliability by a posteriori probability (APP) decoder for low-density parity-check (LDPC) coding and iterative decoding in shingled magnetic recording (SMR), and showed that an effective iterative decoding can be realized by modulating the LLR with a high possibility of correct decoding. In this report, we propose the LLR modulator which discriminates LLRs of APP decoder output using neural network and modulates the LLR whose results by the neural network accord with those of hard decision. Furthermore, we study the performance improvement of the iterative decoding. The result shows that the correct LLRs can be selected and modulated with higher probability and an effective iterative decoding can be performed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | SMR / LDPC / LLR / Neural network |
| Paper # | MRIS2018-21 |
| Date of Issue | 2018-11-29 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2018/12/6(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 of LLR modulation using neural network decision |
| Sub Title (in English) | |
| Keyword(1) | SMR |
| Keyword(2) | LDPC |
| Keyword(3) | LLR |
| Keyword(4) | Neural network |
| 1st Author's Name | Madoka Nishikawa |
| 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 | Yasushi Kanai |
| 3rd Author's Affiliation | Niigata Institude of Technology(Niigata Tech.) |
| 4th Author's Name | Hisashi Osawa |
| 4th Author's Affiliation | Ehime University(Ehime Univ.) |
| 5th Author's Name | Yoshihiro Okamoto |
| 5th Author's Affiliation | Ehime University(Ehime Univ.) |
| Date | 2018-12-06 |
| Paper # | MRIS2018-21 |
| Volume (vol) | vol.118 |
| Number (no) | MRIS-347 |
| Page | pp.pp.7-12(MRIS), |
| #Pages | 6 |
| Date of Issue | 2018-11-29 (MRIS) |