One-Dimensional Detection Using Interference Estimation by Multilayered Two-Dimensional General Partial Response Targets for Bit-Patterned Media Recording Systemsopen access
- Authors
- Thien An Nguyen; Lee, Jaejin
- Issue Date
- Jun-2022
- Publisher
- MDPI
- Keywords
- bit-patterned media recording (BPMR); equalizer; general partial response; interference mitigation; Viterbi algorithm
- Citation
- APPLIED SCIENCES-BASEL, v.12, no.11
- Journal Title
- APPLIED SCIENCES-BASEL
- Volume
- 12
- Number
- 11
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/42983
- DOI
- 10.3390/app12115717
- ISSN
- 2076-3417
- Abstract
- 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 with increasing areal density. In recent studies, a general partial response (GPR) target was often deployed with the equalizer to estimate and reduce interference. With this combination, the BPMR system becomes a promising candidate for high-density storage systems and achieves high bit error rate (BER) performance. Therefore, in this study, we investigate the detection capability while varying the form of the GPR target and implement a multilayered 2D GPR target and a detection method for improving the accuracy in estimating the interference. The simulation results demonstrate that the proposed model improves by a gain of similar to 1 dB compared to the previous studies.
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