中国物理B ›› 2010, Vol. 19 ›› Issue (12): 124216-124216.doi: 10.1088/1674-1056/19/12/124216

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Read channel for signal waveform modulation multi-level disc

王鹤群, 徐海峥, 潘龙法, 刘海龙   

  1. Optical Memory National Engineering Research Center, Tsinghua University, Beijing 100084, China
  • 收稿日期:2010-04-28 修回日期:2010-06-04 出版日期:2010-12-15 发布日期:2010-12-15

Read channel for signal waveform modulation multi-level disc

Wang He-Qun(王鹤群)†, Xu Hai-Zheng(徐海峥), Pan Long-Fa(潘龙法), and Liu Hai-Long(刘海龙)   

  1. Optical Memory National Engineering Research Center, Tsinghua University, Beijing 100084, China
  • Received:2010-04-28 Revised:2010-06-04 Online:2010-12-15 Published:2010-12-15

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摘要： A novel read channel for signal waveform modulation multi-level disc is presented in this paper. This read channel employs timing recovery system and partial response maximum likelihood detector. Compared to the previous read channel composed of level detection and run-length detection, the present read channel shows superiority in capacity increase and robust performance. Especially, relying on the partial response maximum likelihood detection, lower bit error rate can be obtained.

Abstract: A novel read channel for signal waveform modulation multi-level disc is presented in this paper. This read channel employs timing recovery system and partial response maximum likelihood detector. Compared to the previous read channel composed of level detection and run-length detection, the present read channel shows superiority in capacity increase and robust performance. Especially, relying on the partial response maximum likelihood detection, lower bit error rate can be obtained.

Key words: multi-level disc, signal waveform modulation, read channel, partial response maximum likelihood

中图分类号:  (Imaging and optical processing)

  • 42.30.-d
42.79.Vb (Optical storage systems, optical disks)