Timing Recovery Method for Multilevel Run-Length-Limited Read-Only Disc
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概要
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A novel timing recovery method for multilevel run-length-limited read-only disc is described. This timing recovery system employs interpolation method, which extracts multilevel run-length limited (ML-RLL) data directly from asynchronous oversampling RF data. The timing recovery system in the proposed read channel has a feedback architecture and consists entirely of digital circuits. It uses Viterbi detector output to calculate the phase error feedback to interpolator, and a special sync pattern is inserted to help frequency detection. The experimental results show that the acquisition time is much smaller than conventional timing recovery system.
- 2007-09-15
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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Pei Jing
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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