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논문 기본 정보

자료유형
학술저널
저자정보
Jieun Oh (Korea Advanced Institute of Science and Technology) Seokju Han (Korea Advanced Institute of Science and Technology)
저널정보
대한전자공학회 IEIE Transactions on Smart Processing & Computing IEIE Transactions on Smart Processing & Computing Vol.7 No.6
발행연도
2018.12
수록면
496 - 504 (9page)
DOI
10.5573/IEIESPC.2018.7.6.496

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초록· 키워드

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Emerging three-dimensional (3D) NAND flash memory devices support new input/output (I/O) modes in which devices can program/read multiple pages sharing a common word line at the same operating time. The new I/O modes enable error-control systems to apply non-binary coding techniques, which are known to achieve capacity-approaching performance in a high signal-to-noise ratio (SNR) regime in conjunction with high-order modulations for NAND storage devices. This paper compares the performance of a number of multi-level-coding/multistage-decoding (MLC/MSD) schemes for NAND flash memory applications. By applying MLC/MSD techniques, it is possible to minimize the code rate loss caused by using the same code designed for the bit level of a page with the highest error rate equal to the remaining bit level of the pages. One considered scheme is an MLC/MSD method applied to 1D and 2D constellations with Bose-Chaudhuri-Hocquenghem (BCH) component codes. Another scheme compared is a special trellis-coded modulation (TCM) method with extra-strong error correction applied to subset labeling bits via Reed-Solomon (RS) code concatenation. In this paper, a new performance analysis method based on semi-analytical block-multinomial modeling is proposed to provide a simpler way to handle correlated error in TCM output. The analytical error rate results and semi-analytical error rate results based on the block multinomial model with the TCM scheme all indicate significant performance advantages from MLC/MSD schemes relative to the baseline BCH coding method.

목차

Abstract
1. Introduction
2. Multi-level Coding Scheme
3. RS-enhanced TCM Schemes
4. Performance Comparisons
5. Conclusion
References

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