Read Channel for Multilevel Run-Length-Limited Read-Only Disc
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概要
- 論文の詳細を見る
A novel multilevel run-length-limited read channel which employs an interpolating timing recovery system and an adaptive partial-response maximum-likelihood (PRML) detector is developed. In proposed adaptive PRML detection system, we adopt a 112-levels adaptive Viterbi detector which uses every RF sample to adjust the reference levels for the calculation of branch metrics. The reference levels of adaptive Viterbi detector are also used to regenerate RF signals for phase error calculation. The usage of adaptive PRML detector makes the performance more robust, and the combination of Viterbi reference levels and RF generator makes the calculated phase errors more accurate.
- 2008-07-25
著者
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Yuan Haibo
Optical Memory National Engineering Research Center, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, P. R. China
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Pan Longfa
Optical Memory National Engineering Research Center, Department of Precision Instrument and Mechanology, Tsinghua University, Beijing 100084, China
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Xu Haizheng
Optical Memory National Engineering Research Center, Department of Precision Instruments and Mechanics, Tsinghua University, Beijing 100084, China
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Xu Duanyi
Optical Memory National Engineering Research Center, Department of Precision Instruments and Mechanics, Tsinghua University, Beijing 100084, China
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