Data Recovery for Multilayer Magnetic Recording
Data Recovery for Multilayer Magnetic Recording
复制标题
多层磁记录的数据恢复
DOI：
10.1109/tmag.2019.2937692
复制
发表时间：
2019
影响因子：
2.1
通讯作者：
Rahardja, Susanto
中科院分区：
文献类型：
--
作者：
Chan, Kheong Sann;Aboutaleb, Ahmed;Sivakumar, Krishnamoorthy;Belzer, Benjamin;Wood, Roger;Rahardja, Susanto
多层磁记录（MLMR）是下一代技术，通过将数据存储在相互堆叠的多层上，有可能提高磁记录技术的寿命。与MLMR的开发相关联的挑战分为两个主要类别：向多个层写入的挑战和从多个层回阅读的挑战。由于已经有相当数量的现有工作解决了前者，在本文中，我们通过构建和测试检测方案来针对后者，这些检测方案能够将信号从在回读期间混合在一起的多个层中分离出来。在这个初步的工作中，我们考虑一个两层系统。由于底层与读取器的分离增加，底层的分辨率比顶层差。我们假设一个几何形状的两个单宽度的轨道上的顶层跨越一个双宽度的轨道上的底层和符号间干扰（ISI）的响应具有一半的振幅和两倍的长度的顶层。我们检查两个候选检测算法的性能，一个基于维特比的算法操作的网格，和最小二乘（LS）算法，试图反转的信道的干扰的影响。我们使用一个共同的信道模型，总和的ISI和轨道间干扰（ITI）的组件，从每一层的这些检测方案的错误率性能进行评估。这项工作的主要结果是，14.5%的密度增益超过传统的垂直磁记录（PMR）和7.6%的增益超过二维磁记录（TDMR）的新型MLMR系统可能是可能的。
Multilayer magnetic recording (MLMR) is a next-generation technology that has the potential to enhance the longevity of magnetic recording technology by storing data on multiple layers that are stacked on top of one another. The challenges associated with the development of MLMR fall into two main categories: the challenges of writing to multiple layers and the challenges of reading back from multiple layers. As there is already a fair amount of existing work addressing the former, in this article we target the latter by building and testing detection schemes that are able to separate the signals from multiple layers that are mixed together during the readback. In this initial work, we consider a two-layer system. The resolution of the bottom layer is worse than that of the top due to the increased separation of the bottom layer from the reader. We assume a geometry of two single-width tracks on the top-layer straddling a double-width track on the bottom layer and with intersymbol interference (ISI) response on the bottom layer having half the amplitude and double the length of that on the top-layer. We examine the performance of two candidate detection algorithms, a Viterbi-based algorithm operating on a trellis, and a least-squared (LS) algorithm that attempts to invert the effect of the channel's interference. We evaluate the error rate performance of these detection schemes using a common channel model that sums the ISI and intertrack interference (ITI) components from each of the layers. The main result from this work is that 14.5% density gains over the conventional perpendicular magnetic recording (PMR) and 7.6% gains over two-dimensional magnetic recording (TDMR) could be possible for the novel MLMR system.
登录
查看更多内容
3D NAND Flash概述及分页3D垂直栅(3DVG) NAND架构进展
DOI：
--
发表时间：
2014
期刊：
IEEE International Conference on Solid-State and Integrated Circuit Technology
影响因子：
--
作者：
P. Du;H. Lue;Y. Shih;K. Hsieh;Chih
通讯作者：
Chih
高密度 TDMR 的动态晶粒状态估计：进展和未来方向
影响因子：
2.1
作者：
Xueliang Sun;B. Belzer;K. Sivakumar
通讯作者：
K. Sivakumar
微波辅助磁记录 (MAMR) 写入头和系统
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
K. Etoh;M. Hatatani;K. Hosomi;Yohji Maruyama;K. Sugiura;M. Sugiyama
通讯作者：
M. Sugiyama
3-D-MAMR 的最大似然检测
影响因子：
2.1
作者：
K. Chan;R. Wood;S. Rahardja
通讯作者：
S. Rahardja
影响因子：
2.1
作者：
Richter, H. J.;Dobin, A. Y.;Brockie, R. M.
通讯作者：
Brockie, R. M.