On practical LDPC code construction for NAND flash applications
Shiuan-Hao Kuo, Zhen-U Liu, Jeff Yang · 2017
As increasing storage density accompanies increasing adoption of 3D NAND flash, the data integrity turns to more important. The error floor problem is known to have critical impact on the correction capability of LDPC code in NAND flash storage. Herein we propose an analytical method based on a simplified NAND flash error model to relate harmful trapping sets to small cycles, by which we can avoid certain cycle combination during code construction for NAND flash memory applications.