Adaptive partial-response maximum-likelihood detection in optical recording media

摘要

Presented the adaptive partial-response maximum-likelihood (PRML) detector. This detector learns the reference levels for the calculation of the metrics from past RF samples. Therefore, it enables asymmetry and level fluctuation compensation. In this paper, we report the mechanism of the adaptive PRML detection and the results of applying this detection to error rate measurements of 25 Gbyte optical discs recorded with 17 pp modulation signal.