Construction of Flash Memory System with Long Service Life and Reliability

• Project/Area Number: 25889061
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Communication/Network engineering
• Research Institution: Kanagawa University
• Principal Investigator: NOZAKI Takayuki 神奈川大学, 工学部, 助手 (70707497)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 符号理論 / LDPC符号 / 符号化 / 噴水符号 / 誤り訂正符号 / 記録システム / 並列化

Outline of Final Research Achievements

(1) We consider the application of the zigzag decodable code for encoding of flash memory systems. As a result, we propose a high performance and low-complexity fountain coding system. (2) We propose a parallel encoding algorithm for the low-density parity-check (LDPC) codes to reduce the write time of the flash memory system.

Research Products

• [Journal Article] Message Passing Decoder with Decoding on Zigzag Cycles for Non-binary LDPC Codes (2014)
  • Author(s): Takayuki Nozaki, Kenta Kasai, Kohichi Sakaniwa
  • Journal Title: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Volume: E97.A Issue: 4 Pages: 975-984
  • DOI: 10.1587/transfun.E97.A.975
  • NAID: 130003394816
  • ISSN: 0916-8508, 1745-1337
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Weight Distribution for Non-binary Cluster LDPC Code Ensemble (2013)
  • Author(s): Takayuki Nozaki, Masaki Maehara, Kenta Kasai, Kohichi Sakaniwa
  • Journal Title: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Volume: E96.A Issue: 12 Pages: 2382-2390
  • DOI: 10.1587/transfun.E96.A.2382
  • NAID: 130003385287
  • ISSN: 0916-8508, 1745-1337
  • Peer Reviewed
• [Presentation] LDPC 符号に対するブロック対角化による符号化の計算量 (2014)
  • Author(s): 野崎 隆之
  • Organizer: 第37回情報理論とその応用シンポジウム
  • Place of Presentation: 富山県 宇奈月ニューオータニホテル
  • Year and Date: 2014-12-09 – 2014-12-12
• [Presentation] Fountain Codes Based on Zigzag Decodable Coding (2014)
  • Author(s): Takayuki Nozaki
  • Organizer: International Symposium on Inforamtion Thoery and its Applications
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2014-10-26 – 2014-10-29
• [Presentation] ブロック対角化によるLDPC 符号の符号化法 (2014)
  • Author(s): 野崎 隆之
  • Organizer: 電子情報通信学会 情報理論研究会
  • Place of Presentation: 千葉県 鳩山荘松庵
  • Year and Date: 2014-09-19
• [Presentation] Triangular 符号に基づく噴水符号 (2013)
  • Author(s): 野崎 隆之
  • Organizer: 電子情報通信学会 情報理論研究会
  • Place of Presentation: 沖縄，カルチャーリゾートフェストーネ
• [Remarks] 山口大学 理学部 教員紹介
  • URL: http://www.sci.yamaguchi-u.ac.jp/sci/staff/tnozaki
• [Remarks] 神奈川大学 研究者情報
  • URL: http://kenkyu.kanagawa-u.ac.jp/kgdb/KgApp?kyoinId=ymbigyogggg