| Presentation | 2013-10-24 A Class of q-Ary Unidirectional Error Correcting Codes for MLC NAND Flash Memories Shohei KOTAKI, Masato KITAKAMI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Error correcting codes (ECCs) are essential techniques to ensure reliability of NAND Flash Memories. As typical error sources of NAND Flash memories, cell-to-cell interference and data retention are considered. The cell-to-cell interference, which occurs on a word unit, shifts threshold voltage distribution to the negative side. Also, the data retention, every cell suffers its effects, shifts the distribution to the positive side. Consequently, errors to only upper levels or to only lower levels are considered to be dominant in a page. Such errors are similar to unidirectional errors, thus they can be regarded as q-ary unidirectional errors. In this work, a new class of error correcting codes on which the q-ary unidirectional errors are considered is proposed. Evaluation results show that the proposed codes have less check bits than conventional BCH codes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | NAND Flash memories / multi-level cell / error correcting codes / unidirectional errors / q-ary unidirectional errors |
| Paper # | DC2013-25 |
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| Conference Information | |
| Committee | DC |
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| Conference Date | 2013/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Dependable Computing (DC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Class of q-Ary Unidirectional Error Correcting Codes for MLC NAND Flash Memories |
| Sub Title (in English) | |
| Keyword(1) | NAND Flash memories |
| Keyword(2) | multi-level cell |
| Keyword(3) | error correcting codes |
| Keyword(4) | unidirectional errors |
| Keyword(5) | q-ary unidirectional errors |
| 1st Author's Name | Shohei KOTAKI |
| 1st Author's Affiliation | Graduate school of Advaced Interation Science,Chiba University() |
| 2nd Author's Name | Masato KITAKAMI |
| 2nd Author's Affiliation | Graduate school of Advaced Interation Science,Chiba University |
| Date | 2013-10-24 |
| Paper # | DC2013-25 |
| Volume (vol) | vol.113 |
| Number (no) | 270 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |