Title :
Error event characterization of partial response systems in magnetic recording systems with medium noise
Author :
Caroselli, Joe ; Wolf, Jack Keil
Author_Institution :
Quantum Corp., Milpitas, CA, USA
Abstract :
The effective distance (deff) of error events for partial response maximum likelihood (PRML) systems in magnetic recording channels are calculated using a realistic model for medium noise. The presence of medium noise has a strong negative impact on the minimum effective distances. The effective distances and the hierarchy of error events depend on the characteristics of the noise. In addition, due to the data dependency of medium noise, each error event corresponds to a range of deff depending upon which data pattern was transmitted
Keywords :
Viterbi detection; digital magnetic recording; magnetic recording noise; maximum likelihood detection; partial response channels; PRML systems; effective distance; error event characterization; magnetic recording channels; medium noise; partial response maximum likelihood systems; Detectors; Equalizers; Euclidean distance; Gaussian noise; Giant magnetoresistance; Magnetic noise; Magnetic recording; Maximum likelihood detection; Performance analysis; White noise;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776483
