An Improved Variable-Node-Based BP Decoding Algorithm for NAND Flash Memory

被引：0

作者：

Yang, Guojun ^{[1
]}

Liu, Xingcheng ^{[1
]}

Chen, Xuechen ^{[1
]}

Wang, Zhongfeng ^{[2
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou, Guangdong, Peoples R China

[2] Nanjing Univ, Sch Elect Sci & Engn, Nanjing, Jiangsu, Peoples R China

来源：

2018 IEEE 18TH INTERNATIONAL CONFERENCE ON COMMUNICATION TECHNOLOGY (ICCT) | 2018年

基金：

中国国家自然科学基金;

关键词：

NAND flash memory; LDPC code; message preprocessing; belief-propagation decoding; error-correction performance; CODES; READ;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

To solve the problems of the data reliability for NAND flash storages, a variable-node-based belief-propagation with message pre-processing (VNBP-MP) decoding algorithm for binary low-density parity-check (LDPC) codes is proposed. The major feature is that, by making use of the characteristics of the NAND flash channel, the proposed algorithm performs the message pre-processing (MP) scheme to effectively prevent the propagation of unreliable messages and speed up the propagation of reliable messages. To further speed up the decoding convergence, the treatment for oscillating variable nodes (VNs) is considered after the MP scheme being employed. Simulation results show that the proposed VNBP-MP algorithm has a noticeable improvement in convergence speed without compromising the error-correction performance, compared with the existing algorithms.

引用

页码：109 / 114

页数：6

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