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Double-layer magnetic recording with multilayer perceptron decoder for single-reader/two-track reading in BPMR systems.
- Source :
- AIP Advances; Mar2023, Vol. 13 Issue 3, p1-4, 4p
- Publication Year :
- 2023
-
Abstract
- 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 technology. To further increase the storage capacity of BPMR, multi-layer magnetic recording can be combined with BPMR. Therefore, this paper considers double-layer magnetic recording with a single-reader/two-track reading technique for the staggered BPMR system, which is performed together with a rate-3/5 modulation code. This paper proposes to utilize a multilayer perceptron decoder to decode and estimate the log-likelihood ratio value of the recorded bit sequence that is obtained from the equalized channel. Simulation results show that at a bit-error rate of 10<superscript>−4</superscript>, the proposed system with a double-layer recording medium can achieve an improvement gain of about 1.2 decibel if compared to that with a regular single-layer recording medium, even in the presence of media noise. [ABSTRACT FROM AUTHOR]
- Subjects :
- DECODERS & decoding
MODULATION coding
READING
Subjects
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 13
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 162858028
- Full Text :
- https://doi.org/10.1063/9.0000499