Title :
A study on observation of noise related to decision error in PRML system
Author :
Okamoto, Yuji ; Nakamura, Yoshihiko ; Osawa, Hideya ; Muraoka, Hiroaki ; Nakamura, Yoshihiko
Author_Institution :
Ehime Univ., Matsuyama, Japan
Abstract :
Perpendicular magnetic recording (PMR) is being used to achieve higher recording density in hard disk derive (HDD) instead of longitudinal magnetic recording. This paper proposes a way on how to observe noise, which causes decision error, and have clarified by R/W simulation that the method is effective for obtaining the relationship between the decision error and generated noise. We are confirming the effect of the proposed method by actual R/W experiments using a spin-stand system.
Keywords :
disc drives; hard discs; noise generators; perpendicular magnetic recording; PRML system; decision error; hard disk drive; noise generation; perpendicular magnetic recording; Additive white noise; Detectors; Equalizers; Gaussian noise; Magnetic noise; Maximum likelihood detection; Noise generators; Noise level; Perpendicular magnetic recording; Writing;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463929
