95%-Lower-BER 43%-Lower-Power Intelligent SolidState Drive (SSD) with Asymmetric Coding and Stripe Pattern Elimination Algorithm

📋 论文概要

该论文提出了一种智能固态硬盘（SSD）设计，采用不对称编码和条纹模式消除技术，能够将存储错误率降低95%，同时功耗降低43%。针对NAND闪存随尺寸缩小而出现的干扰和程序扰动问题，通过编码和模式优化提升可靠性。

💡 主要创新点

• 创新点1：提出不对称编码技术，针对不同存储错误类型差异化编码，降低错误率。
• 创新点2：采用条纹模式消除方法，减少数据模式相关的干扰，进一步降低功耗。
• 创新点3：在系统层面整合编码与模式优化，实现智能SSD的可靠性和能效双重提升。

🏷 关键词

📄 原文摘要

memory errors by 95% and reduce power consumption by 43%. Figure 11.4.1 shows the measured memory cell error in the data retention and program disturb of 4X, 3X and 2Xnm NAND flash memories. As the memory size decreases, both data retention and program disturb errors increase due to the interference, random telegraph noise and reduced electrons [1]. In the scaled NAND, the electric field in the channel increases [2] and the program disturb due to GIDL-induced hot electron injection becomes more significant (Fig. 11.4.1(c)). In conventional SSDs, 20 to 40b correction per 1KB codeword error-correcting code (ECC) is used to correct errors [3]. As stronger codes, such as LDPC, are developed [4], the capability of ECC is close to the Shannon limit of a few percent error correction. Thus, the additional high-reliability scheme is req

👥 作者与机构

Shuhei Tanakamaru1, Chinglin Hung1, Atsushi Esumi2, Mitsuyoshi Ito2,

Kai Li2, Ken Takeuchi1 1 2 University of Tokyo, Tokyo, Japan, SIGLEAD, Yokohama, Japan This paper presents intelligent solid-state drives (SSDs), which decrease