| Presentation | 2023-12-08 Performance evaluation of SP decoding considering the influence of recording pattern using neural network Madoka Nishikawa, Yasuaki Nakamura, Yasushi Kanai, Yoshihiro Okamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We study an LDPC (low-density parity-check) encoding and iterative decoding method which combines LDPC codes and SP (sum-product) decoding for a shingled magnetic recording (SMR) system. In particular, we show the usefulness of applying a neural network in iterative decoding. We previously evaluated the log-likelihood ratio (LLR) by giving the neural network in SP decoding the LLR that is related to row operations on the parity check matrix for the decoding target bit and updated the LLR based on the evaluation to further improve SP decoding. In this study, we propose to evaluate and update the LLR considering the influence of noise depending on the recording pattern by providing the neural network in SP decoding with the LLR for the decoding target and its adjacent bits to achieve more effective iterative decoding. Also, we compare the case of SP decoding with a neural network that is given only the LLR for the decoding target bit and the case of SP decoding without a neural network. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LDPC / Neural network / SP decoding |
| Paper # | MRIS2023-27 |
| Date of Issue | 2023-11-30 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2023/12/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ehime Univ. (CITE) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing, Holographic Data Storage, and Others |
| Chair | Ikuya Tagawa(Tohoku Inst. of Tech.) / Kenji Machida(NHK) |
| Vice Chair | |
| Secretary | (Ehime Univ.) / (Samsung) |
| Assistant | Nobuaki Kikuchi(Tohoku Univ.) / Toshiki Yamaji(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) | Performance evaluation of SP decoding considering the influence of recording pattern using neural network |
| Sub Title (in English) | |
| Keyword(1) | LDPC |
| Keyword(2) | Neural network |
| Keyword(3) | SP decoding |
| 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 | Institute of Technology(Niigata Ins. of Tec.) |
| 4th Author's Name | Yoshihiro Okamoto |
| 4th Author's Affiliation | Ehime University(Ehime Univ.) |
| Date | 2023-12-08 |
| Paper # | MRIS2023-27 |
| Volume (vol) | vol.123 |
| Number (no) | MRIS-295 |
| Page | pp.pp.30-35(MRIS), |
| #Pages | 6 |
| Date of Issue | 2023-11-30 (MRIS) |