Partial response maximum-likelihood system and crosstalk cancellation method for high-density optical recording

H. Cho, J. An, S. Ong, Daesik Hong, S. Ahn, Jaihie Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Methods for partial response maximum-likelihood (PRML) detection and crosstalk cancellation are discussed. In accordance with the demand for increased recording density, a 20 Gbyte digital versatile disk (DVD) ROM channel is considered. The channel is modeled to be close to a real optical channel using DIFFRACT™. After comparing the spectral characteristics of various PR polynomials, P(D) = 1 + D+ D2 + D3 is proposed as a target PR. The performance of the system is illustrated under the condition that the readout signal is degraded by crosstalk, radial tilt, and nonlinear distortions in optics. Finally, we present the multispot detection technique for crosstalk cancellation. The simulation results show that if no radial tilt is present, crosstalk is fully cancelled.

Original languageEnglish
Pages (from-to)1621-1628
Number of pages8
JournalOptical Engineering
Volume40
Issue number8
DOIs
Publication statusPublished - 2001 Aug 1

Fingerprint

Optical recording
optical density
Crosstalk
crosstalk
cancellation
Maximum likelihood
recording
Nonlinear distortion
ROM
readout
Optics
polynomials
Polynomials
optics
simulation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

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abstract = "Methods for partial response maximum-likelihood (PRML) detection and crosstalk cancellation are discussed. In accordance with the demand for increased recording density, a 20 Gbyte digital versatile disk (DVD) ROM channel is considered. The channel is modeled to be close to a real optical channel using DIFFRACT™. After comparing the spectral characteristics of various PR polynomials, P(D) = 1 + D+ D2 + D3 is proposed as a target PR. The performance of the system is illustrated under the condition that the readout signal is degraded by crosstalk, radial tilt, and nonlinear distortions in optics. Finally, we present the multispot detection technique for crosstalk cancellation. The simulation results show that if no radial tilt is present, crosstalk is fully cancelled.",
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Partial response maximum-likelihood system and crosstalk cancellation method for high-density optical recording. / Cho, H.; An, J.; Ong, S.; Hong, Daesik; Ahn, S.; Kim, Jaihie.

In: Optical Engineering, Vol. 40, No. 8, 01.08.2001, p. 1621-1628.

Research output: Contribution to journalArticle

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T1 - Partial response maximum-likelihood system and crosstalk cancellation method for high-density optical recording

AU - Cho, H.

AU - An, J.

AU - Ong, S.

AU - Hong, Daesik

AU - Ahn, S.

AU - Kim, Jaihie

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AB - Methods for partial response maximum-likelihood (PRML) detection and crosstalk cancellation are discussed. In accordance with the demand for increased recording density, a 20 Gbyte digital versatile disk (DVD) ROM channel is considered. The channel is modeled to be close to a real optical channel using DIFFRACT™. After comparing the spectral characteristics of various PR polynomials, P(D) = 1 + D+ D2 + D3 is proposed as a target PR. The performance of the system is illustrated under the condition that the readout signal is degraded by crosstalk, radial tilt, and nonlinear distortions in optics. Finally, we present the multispot detection technique for crosstalk cancellation. The simulation results show that if no radial tilt is present, crosstalk is fully cancelled.

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