Enabling multilevel modulation through adaptive channel linearization

David C. Lee; David K. Warland; Greg S. Lewis; Jason Stinebaugh; Judith C. Powelson; Yung-Cheng Lo

doi:10.1117/12.533137

16 September 2003 Enabling multilevel modulation through adaptive channel linearization

David C. Lee, David K. Warland, Greg S. Lewis, Jason Stinebaugh, Judith C. Powelson, Yung-Cheng Lo

Proceedings Volume 5069, Optical Data Storage 2003; (2003) https://doi.org/10.1117/12.533137
Event: Optical Data Storage 2003, 2003, Vancouver, Canada

Abstract

We have previously reported on the performance of Multilevel ML technology on a wide variety of systems including CD-, DVD-, and blue-based systems. ML technology enables increased capacity and performance over traditional binary-modulation systems. Implementing this technology requires the addition of a single integrated circuit or IC core to the standard electronics of current drives, so manufacturers can provide ML capacity without altering existing optics, mechanics, or manufacturing infrastructure. In this paper, we describe precompensation and postcompensation, key Calimetrics' technologies that enable ML recording. These technologies enable ML recording by making the native nonlinear recording channel behave as a simple linear channel as well as by dynamically adjusting for nonlinear channel variations among different media and drives.

Citation Download Citation

David C. Lee, David K. Warland, Greg S. Lewis, Jason Stinebaugh, Judith C. Powelson, and Yung-Cheng Lo "Enabling multilevel modulation through adaptive channel linearization", Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); https://doi.org/10.1117/12.533137

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