Optimization of Write Strategy in a Partial-Response-Maximum-Likelihood System for High-Density Recording

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概要

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• It is difficult to optimize the write strategy by conventional methods in high-density recording systems with very severe intersymbol interference. We have proposed a new method using the index accounting for the linearity of the channel, which is very important in the partial-response-maximum-likelihood detection scheme. It has been confirmed that the minimum bit error rate can be obtained when the linearity of the channel becomes maximum. We have shown the feasibility of a recording capacity of over 20 GB with 120-mm-diameter phase-change media using the blue-violet laser diode with an objective lens whose numerical aperture is 0.65.

• 2003-02-15

著者

• Honma Hiromi

  Functional Devices Research Labolatories Nec Corporation

• OHKUBO Shuichi

  Functional Devices Research Laboratories, NEC Corporation

• Ide Tatsunori

  Functional Devices Research Laboratories Nec Corporation

• NAKANO Masaki

  Functional Devices Research Laboratories, NEC Corporation

• Iwanaga Toshiaki

  Functional Devices Research Laboratories Nec Corporation

• Ohkubo Shuichi

  Functional Devices Research Laboratories, NEC Corporation, 4-1-1 Miyazaki, Miyamae-ku, Kawasaki, Kanagawa 216-8555, Japan

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