Title :
Detection of media defects in perpendicular magnetic recording channels
Author :
Tan, Weijun ; Cruz, J.R.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
Abstract :
Two new algorithms for detection of media defects in perpendicular magnetic recording channels are proposed. These algorithms are based on amplitude thresholding of the channel reliability information. The performance of these algorithms is evaluated for low-density parity-check coded channels using generalized partial response targets with different dc-components.
Keywords :
channel coding; parity check codes; perpendicular magnetic recording; amplitude thresholding; channel reliability information; general partial response; media defects detection; parity check coded channels; perpendicular magnetic recording channels; Frequency; Ground penetrating radar; Magnetic recording; Parity check codes; Perpendicular magnetic recording; Reliability engineering; Signal processing algorithms; Signal to noise ratio; System performance; USA Councils; BCJR algorithm; generalized partial response (GPR) channels; low-density parity-check (LDPC) codes; media defects (MDs); perpendicular magnetic recording channels (PMRCs);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855330
