Nonlinear components in optical disk signals: analysis and compensation

Maeda, Takeshi; Minemura, Hiroyuki; Shimano, Takeshi

doi:10.1109/tmag.2004.842064

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12) It is known that some of these nonlinearities are caused by domain bloom or asymmetry. 8,9,[13][14][15][16] Bloom, an imperfection in the disc, is due to variations in focus, laser power, and/or media sensitivity, and results in uniform increases or decreases in the sizes of the written domains. This causes pits to be unintentionally too large or too small.…”

Section: Introductionmentioning

confidence: 99%

“…9, the asymmetric symbol conversion scheme is proposed for enabling the asymmetric waveform represention in the read-out signal optical disk systems particularly digital versatile disc (DVD) systems. Another approach 15,16) characterizes asymmetry as a source of nonlinearity in the read-out signal and introduces an adaptive lookup table for computing reference data levels. Many studies regarding nonlinearities in optical recording systems, even though not mentioned superficially, focus on modeling the asymmetry in the read-out signal with various nonlinear models.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Domain Bloom in Super-Resolution Near-Field Structure Read-Out Signals

Park

Moon

2013

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Super-resolution near-field structure (super-RENS) read-out samples are affected by a nonlinear and noncausal channel, which results in intersymbol interference. Some of these nonlinearities are caused by domain bloom or asymmetry, which is an imperfection in the disc. In this study, we investigate the effect of the domain bloom on the super-RENS read-out signal. For this, we employ the asymmetric symbol conversion scheme to generate asymmetric symbols corresponding to a bit pattern and apply the linear modeling approach to model the read-out channel with a finite impulse response filter. The modeling performance is verified with the causal and noncausal filters in terms of normalized mean square error. The performance of the approach considered here is compatible with that of the Volterra filter, whereas the approach maintains a lower complexity than the Volterra filter.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Domain Bloom in Super-Resolution Near-Field Structure Read-Out Signals

Park

Moon

2013

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

The Nonlinear Equalizer for Super-RENS Read-out Signals using an Asymmetric Waveform Model

Moon¹,

Park²,

Lee³

et al. 2014

Journal of the Institute of Electronics and Information Enginee

View full text Add to dashboard Cite

Super-resolution near-field structure (super-RENS) read-out samples are affected by a nonlinear and noncausal channel, which results in inter-symbol interference (ISI). In this study, we investigate asymmetry or domain bloom in super-RENS in terms of equalization. Domain bloom is caused by writing process in optical recording. We assume in this work that the asymmetry symbol conversion scheme is to generate asymmetric symbols, and then a linear finite impulse response filter can model the read-out channel. For equalizing this overall nonlinear channel, the read-out signals are deconvolved with the finite impulse response filter and its output is decided based on the decision rule table that is developed from the asymmetry symbol conversion scheme. The proposed equalizer is investigated with the simulations and the real super-RENS samples in terms of raw bit error rate.

show abstract

Contributions to adaptive equalization and timing recovery for optical storage systems

Riani

2008

View full text Add to dashboard Cite

Nonlinear components in optical disk signals: analysis and compensation

Cited by 3 publications

References 4 publications

Domain Bloom in Super-Resolution Near-Field Structure Read-Out Signals

Domain Bloom in Super-Resolution Near-Field Structure Read-Out Signals

The Nonlinear Equalizer for Super-RENS Read-out Signals using an Asymmetric Waveform Model

Contributions to adaptive equalization and timing recovery for optical storage systems

Contact Info

Product

Resources

About