A concatenation scheme of LDPC codes and source codes for flash memories
A concatenation scheme of LDPC codes and source codes for flash memories
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一种用于闪存的 LDPC 码和源代码的级联方案
DOI:
10.1186/1687-6180-2012-208
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发表时间:
2012-09
影响因子:
1.9
通讯作者:
Zulin Wang
中科院分区:
文献类型:
--
作者:
Qin Huang;Song Pan;Mu Zhang;Zulin Wang
Recently, low-density parity-check (LDPC) codes have been applied in flash memories to correct errors. However, as verified in this article, their performance degrades rapidly as the number of stuck cells increases. Thus, this paper presents a concatenation reliability scheme of LDPC codes and source codes, which aims to improve the performance of LDPC codes for flash memories with stuck cells. In this scheme, the locations of stuck cells is recorded by source codes in the write process such that erasures rather than wrong log-likelihood ratios on these cells are given in the read process. Then, LDPC codes correct these erasures and soft errors caused by cell-to-cell interferences. The analyses of channel capacity and compression rates of source codes with side information show that the memory cost of the proposed scheme is moderately low. Simulation results verify that the proposed scheme outperforms the traditional scheme with only LDPC codes.
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影响因子:
8.3
作者:
M. Franceschini;G. Ferrari;R. Raheli
通讯作者:
M. Franceschini;G. Ferrari;R. Raheli
影响因子:
20.6
作者:
Philip Protter
通讯作者:
Philip Protter
DOI:
10.1007/978-3-540-69457-1_3
发表时间:
2009-01-01
期刊:
LDPC CODED MODULATIONS
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1109/tassp.1984.1164265
发表时间:
1984-02
期刊:
IEEE Transactions on Acoustics, Speech, and Signal Processing
影响因子:
--
作者:
D. Messerschmitt
通讯作者:
D. Messerschmitt
影响因子:
3.7
作者:
Yuhong Yang
通讯作者:
Yuhong Yang