DocumentCode :
82483
Title :
A Dominating Error Region Strategy for Improving the Bit-Flipping LDPC Decoder of SSDs
Author :
Yupeng Hu ; Shun Song ; Sheng Xiao ; Quan Xu ; Nong Xiao ; Zheng Qin
Author_Institution :
Coll. of Comput. Sci. & Electron. Eng., Hunan Univ., Changsha, China
Volume :
62
Issue :
6
fYear :
2015
fDate :
Jun-15
Firstpage :
578
Lastpage :
582
Abstract :
This brief presents a dominating error region strategy (DERS) that improves the bit-flipping (BF) low-density parity-check decoder for solid-state drives. With the help of the DERS, the state-of-the-art BF decoding algorithms achieve better error correction performance while taking less iterations. Specifically, the DERS provides solutions for restricting the occurrences of an even number of flipped bits and bit-error propagations, both of which are intrinsic problems to current BF decoding algorithms. The DERS can be implemented with a simple circuitry and serve as a fine-tuning technique for the decoding reliability-performance tradeoff. In this brief, the DERS is evaluated with numerical analysis and computer simulations.
Keywords :
disc drives; error correction; hard discs; numerical analysis; parity check codes; SSD; bit-flipping LDPC decoder; computer simulations; dominating error region strategy; error correction; low-density parity-check decoder; numerical analysis; solid state drives; Ash; Decoding; Density estimation robust algorithm; Iterative decoding; Mutual information; Threshold voltage; Convergence; LDPC; NAND flash memory; convergence; error correction; low-density parity check (LDPC); nand Flash memory; solid-state drive (SSD);
fLanguage :
English
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-7747
Type :
jour
DOI :
10.1109/TCSII.2015.2407732
Filename :
7051230
Link To Document :
بازگشت