Title :
A novel approach to removing intersymbol interference from spin-stand images
Author :
Mayergoyz, Isaak D. ; Tse, Chun ; Krafft, Charles ; McAvoy, Patrick
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Maryland, College Park, MD, USA
fDate :
7/1/2004 12:00:00 AM
Abstract :
A novel intersymbol interference (ISI) removal technique based on the "response function" characterization of giant-magnetoresistive heads is presented. It is demonstrated that the ISI-free readback image that corresponds to the actual underlying magnetization patterns can be extracted from the ISI-distorted readback signal through deconvolution. A new image deconvolution algorithm has been implemented, and it has been shown that it effectively removes the ISI distortions.
Keywords :
giant magnetoresistance; interference suppression; intersymbol interference; magnetic heads; ISI-distorted readback signal; ISI-free readback image; giant-magnetoresistive heads; head response function; image deconvolution algorithm; intersymbol interference removal; magnetization patterns; response function characterization; spin-stand imaging; Data mining; Deconvolution; Hard disks; Intersymbol interference; Linearity; Magnetic heads; Magnetization; Maximum likelihood detection; Pulse generation; Shape; Head response function; ISI; intersymbol interference; spin-stand imaging;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.830153
