EM Algorithm for Designing Soft-Decision Binary Error Correction Codes of MLC NAND Flash Memory 


Vol. 39,  No. 3, pp. 127-139, Mar.  2014


PDF
  Abstract

In this paper, we present two signal processing techniques for designing binary error correction codes for Multi-Level Cell(MLC) NAND flash memory. MLC NAND flash memory saves the non-binary symbol at each cell and shows asymmetric channel LLR l-density which makes it difficult to design soft-decision binary error correction codes such as LDPC codes and Polar codes. Therefore, we apply density mirroring and EM algorithm for approximating the MLC NAND flash memory channel to the binary-input memoryless channel. The density mirroring processes channel LLRs to satisfy roughly all-zero codeword assumption, and then EM algorithm is applied to l-density after density mirroring for approximating it to mixture of symmetric Gaussian densities. These two signal processing techniques make it possible to use conventional code design algorithms, such as density evolution and EXIT chart, for MLC NAND flash memory channel.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

S. Kim and D. Shin, "EM Algorithm for Designing Soft-Decision Binary Error Correction Codes of MLC NAND Flash Memory," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 3, pp. 127-139, 2014. DOI: .

[ACM Style]

Sung-Rae Kim and Dong-Joon Shin. 2014. EM Algorithm for Designing Soft-Decision Binary Error Correction Codes of MLC NAND Flash Memory. The Journal of Korean Institute of Communications and Information Sciences, 39, 3, (2014), 127-139. DOI: .

[KICS Style]

Sung-Rae Kim and Dong-Joon Shin, "EM Algorithm for Designing Soft-Decision Binary Error Correction Codes of MLC NAND Flash Memory," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 3, pp. 127-139, 3. 2014.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880