Results 11 to 20 of about 6,228 (284)

Optimization of two-dimensional generalized partial response target using multi-layer perceptron for bit-patterned media recording systems

AIP Advances, 2023
In magnetic storage systems, the read signal that is the output of the magnetic recording channel is passed through the equalizer to convert it into the desired partial response (PR) target signal.
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

MAP Detection for Double-Layer Bit-Patterned Media Recording

Applied Sciences
The rapid increase in global data generation has intensified the demand for magnetic storage systems with substantially higher areal density. Double-layer bit-patterned media recording (DLBPMR), which integrates the benefits of bit-patterned media ...
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

Serial Detection with Neural Network-Based Noise Prediction for Bit-Patterned Media Recording Systems

Applied Sciences, 2021
Ultra-high density data storage has gained high significance given the increasing amounts of data; many technologies have been proposed to achieve a high density. Among them, bit-pattern media recording (BPMR) is a promising technology.
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

One-Dimensional Detection Using Interference Estimation by Multilayered Two-Dimensional General Partial Response Targets for Bit-Patterned Media Recording Systems

Applied Sciences, 2022
In bit-patterned media recording (BPMR) systems, two-dimensional (2D) interference, which includes intersymbol and intertrack interference from down- and across-track directions, respectively, increases when the distance between the islands is reduced ...
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

Two-Dimensional 15/24 Non-Isolated Patterned Modulation Codes With Minimum Hamming Distance 3 in Bit-Patterned Media Recording

IEEE Access
Reducing the distance between magnetic islands is essential for increasing the areal density in bit-patterned media recording (BPMR). Consequently, significant two-dimensional (2D) interference emerges, encompassing inter-symbol interference (ISI) and ...
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

Modulation Code for Reducing Intertrack Interference on Staggered Bit-Patterned Media Recording

Applied Sciences, 2020
A bit-patterned media recording (BPMR) system is a type of ultrahigh-capacity magnetic storage system that can extend to an areal density of 1 terabit per square inch or higher.
Seongkwon Jeong, Jaejin Lee
doaj   +2 more sources

Iterative Signal Detection Scheme Using Multilayer Perceptron for a Bit-Patterned Media Recording System

Applied Sciences, 2020
Because of the physical and engineering problems of conventional magnetic data storage systems, bit-patterned media recording (BPMR) is expected to be a promising technology for extending the storage density to beyond 1 Tb /in2.
Seongkwon Jeong, Jaejin Lee
doaj   +2 more sources

Modified Viterbi Algorithm with Feedback Using a Two-Dimensional 3-Way Generalized Partial Response Target for Bit-Patterned Media Recording Systems

Applied Sciences, 2021
The ever-increasing demand for data in recent times has led to the emergence of big data and cloud data. The growth in these fields has necessitated that data be centrally stored in data centers.
Thien An Nguyen, Jaejin Lee
doaj   +2 more sources

Optimized LDPC Matrices: Reducing and Redistributing 1 bits for Enhanced MAP Detection in Bit-Patterned Media Recording Systems

IEEE Access
Bit-patterned media recording (BPMR) is increasingly recognized as a leading technology for next-generation storage systems due to its potential for achieving extremely high area density. In BPMR, data is stored on discrete magnetic islands arranged in a
Thien An Nguyen, Jaejin Lee, Jong-Ho Lee
doaj   +2 more sources

Double-layer magnetic recording with multilayer perceptron decoder for single-reader/two-track reading in BPMR systems

AIP Advances, 2023
To expand an areal density of hard disk drives, bit-patterned magnetic recording (BPMR) using a patterned medium instead of a granular medium as employed in perpendicular magnetic recording is attracting much attention as the next-generation recording ...
N. Rueangnetr, S. Koonkarnkhai, P. Kovintavewat, C. Warisarn   +3 more
doaj   +1 more source