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Jitter model and signal processing techniques for high-density optical data storage

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1 Author(s)
M. -K. Liu ; Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA

The author discusses a jitter model and signal processing techniques for data recovery in pulse width modulation (PWM) optical recording. A high-speed counter clock is used to convert time marks to amplitude marks, and signal processing techniques are used to minimize jitter according to the jitter model. The jitter model considered takes into account jitter from both the write and read processes, and the signal processing techniques include: velocity and intersymbol interference equalization; differential interleaving detection (DID); additive interleaving detection (AID); differential interleaving modulation (DIM); and additive interleaving modulation (AIM). These techniques are found to be effective in reducing the mark error rate (MER). Various modulation codes can be used in addition to the signal processing techniques to achieve better modulation efficiency

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:10 ,  Issue: 1 )