Results 11 to 20 of about 76 (59)

LDPC product coding scheme with extrinsic information for bit patterned media recoding

open access: yesAIP Advances, 2017
Since the density limit of the current perpendicular magnetic storage system will soon be reached, bit patterned media recording (BPMR) is a promising candidate for the next generation storage system to achieve an areal density beyond 1 Tb/in2.
Seongkwon Jeong, Jaejin Lee
doaj   +2 more sources

Soft-Output Detector Using Multi-Layer Perceptron for Bit-Patterned Media Recording

open access: yesApplied Sciences, 2022
As conventional data storage systems are faced with critical problems such as the superparamagnetic limit, bit-patterned media recording (BPMR) has received significant attention as a promising next-generation magnetic data storage system.
Seongkwon Jeong, Jaejin Lee
doaj   +2 more sources

Bit-island arrangement and signal processing in double-layer magnetic recording technology

open access: yesAIP Advances
The escalating demand for high-density storage of hard disk drives has prompted the innovation of advanced technologies to significantly boost an areal density (AD). Among these, three-dimensional magnetic recording systems incorporating double recording
V. Sawangarom   +3 more
doaj   +2 more sources

Recording media configurations for double-layered bit-patterned magnetic recording

open access: yesAIP Advances
The current magnetic recording technology is approaching its recording density limit. Recently, concepts focused on vertically stacking multiple recording media have gained momentum, driven by the potential to significantly expand recording density.
Chaiwat Buajong, Chanon Warisarn
doaj   +2 more sources

Enhancing Log-Likelihood Ratios with Mutual Information on Three-Reader One-Track Detection in Staggered BPMR Systems

open access: yesApplied Sciences
Because so much information is currently being shared online, there has been a sharp rise in the need for data storage devices over the past ten years. The main storage option is the hard disk drive (HDD), which is less expensive than some other types of
Natthakan Rueangnetr   +4 more
doaj   +2 more sources

Multilayer perceptron-based array reader optimization for ultra-high density magnetic recording

open access: yesAIP Advances
We have previously presented a utilization of a long-short-term memory (LSTM) network to improve the reliability of the log-likelihood ratios (LLRs) in a coded three-head/three-track bit-patterned magnetic recording (BPMR) system. To continuously enhance
N. Rueangnetr, C. Warisarn
doaj   +2 more sources

An iterative ITI cancellation method for multi-head multi-track bit-patterned magnetic recording systems

open access: yesDigital Communications and Networks, 2021
Bit-Patterned Magnetic Recording (BPMR) is one of the emerging data storage technologies, which promises an Areal Density (AD) of about 4 Tb/in2. However, a major problem practically encountered in a BPMR system is Inter-Track Interference (ITI) that can
Santi Koonkarnkhai, Piya Kovintavewat
doaj   +1 more source

Soft-information flipper based on long-short term memory networks for ultra-high density magnetic recording

open access: yesAIP Advances, 2021
Currently, researchers have been developing new ultra-high density magnetic recording technologies to meet the exponential growth of data storage demand. One of the main prospective technologies is bit-patterned media recording (BPMR) technology which is
N. Rueangnetr, Lin M. Myint, C. Warisarn
doaj   +1 more source

Constrained codes in single-reader/two-track reading bit-patterned magnetic recording

open access: yesAIP Advances, 2021
A reduction in track width of ultra-high density magnetic recording such as bit-patterned media recording (BPMR) results in an increase in areal density.
S. Sokjabok   +5 more
doaj   +1 more source

A simple skew angle detection and suppression method for bit-patterned magnetic recording

open access: yesAIP Advances, 2021
An achievement of an areal density (AD) up to 4 Tb/in2 in hard disk drives (HDDs) is expected under a bit-patterned magnetic recording (BPMR) system. One of major problems in HDDs is a skew angle (SA), which depends on a read/write head position on a ...
Santi Koonkarnkhai   +2 more
doaj   +1 more source

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