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Proceedings Paper

Enabling multilevel modulation through adaptive channel linearization
Author(s): David C. Lee; David K. Warland; Greg S. Lewis; Jason Stinebaugh; Judith C. Powelson; Yung-Cheng Lo
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Paper 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.

Paper Details

Date Published: 16 September 2003
PDF: 6 pages
Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); doi: 10.1117/12.533137
Show Author Affiliations
David C. Lee, Calimetrics, Inc. (United States)
David K. Warland, Calimetrics, Inc. (United States)
Greg S. Lewis, Calimetrics, Inc. (United States)
Jason Stinebaugh, Calimetrics, Inc. (United States)
Judith C. Powelson, Calimetrics, Inc. (United States)
Yung-Cheng Lo, Calimetrics, Inc. (United States)


Published in SPIE Proceedings Vol. 5069:
Optical Data Storage 2003
Michael O'Neill; Naoyasu Miyagawa, Editor(s)

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