Explicit Constructions of Optimal-Access MSCR Codes for All Parameters
文献类型：期刊论文
| 作者 | Zhang, Yaqian1,2; Zhang, Zhifang1,2; Wang, Lu1,2 |
| 刊名 | IEEE COMMUNICATIONS LETTERS
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 24期号:5页码:941-945 |
| 关键词 | Cooperative regenerating code optimal access distributed storage system |
| ISSN号 | 1089-7798 |
| DOI | 10.1109/LCOMM.2020.2972899 |
| 英文摘要 | The MSCR (minimum storage cooperative regenerating) code is an important variation of regenerating codes for repairing multiple node failures in a cooperative way and retaining the minimum storage. However, explicit constructions of MSCR codes for all parameters were not developed untill Ye&Barg's recent work. Here we present another explicit construction of MSCR codes for all parameters. Specifically, we design an (n, k) MDS code that can cooperatively repair any h (2 <= h n - k) erasures from any d (k <= d <= n - h) helper nodes. The superiority of our code to Ye&Barg's is three fold: (1) Our code additionally has the optimal access property, i.e., the amount of data accessed at each helper node meets a lower bound on this quantity; (2) The subpacketization level is reduced by a factor of (d - k)((h-1)) [GRAPHICS] ; (3) Our code is built over a smaller field F with vertical bar F vertical bar >= n+ d - k, compared to Ye&Barg's requirement vertical bar F vertical bar vertical bar (d - k + 1)n. |
| 资助项目 | National Natural Science Foundation of China[61872353] |
| WOS研究方向 | Telecommunications |
| 语种 | 英语 |
| WOS记录号 | WOS:000536637200002 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/51476]  |
| 专题 | 中国科学院数学与系统科学研究院 |
| 通讯作者 | Zhang, Yaqian |
| 作者单位 | 1.Chinese Acad Sci, Acad Math & Syst Sci, Key Lab Math Mechanizat, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yaqian,Zhang, Zhifang,Wang, Lu. Explicit Constructions of Optimal-Access MSCR Codes for All Parameters[J]. IEEE COMMUNICATIONS LETTERS,2020,24(5):941-945. |
| APA | Zhang, Yaqian,Zhang, Zhifang,&Wang, Lu.(2020).Explicit Constructions of Optimal-Access MSCR Codes for All Parameters.IEEE COMMUNICATIONS LETTERS,24(5),941-945. |
| MLA | Zhang, Yaqian,et al."Explicit Constructions of Optimal-Access MSCR Codes for All Parameters".IEEE COMMUNICATIONS LETTERS 24.5(2020):941-945. |
入库方式： OAI收割
来源：数学与系统科学研究院
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