Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
MAGNETIC RECORDING SYSTEM DESIGN TO REDUCE MEDIUM NOISE THROUGH SIGNAL PRECOMPENSATION
 

Summary: MAGNETIC RECORDING SYSTEM DESIGN
TO REDUCE MEDIUM NOISE THROUGH SIGNAL PRECOMPENSATION
Joseph A. O'Sullivan, Dakshi Agrawal, Donald G. Porter, Ronald S. Indeck, and Marcel W. Muller
Department of Electrical Engineering
Washington University
St. Louis, MO 63130
Abstract
Much of the noise in magnetic recording systems is due to
intrinsic properties of the magnetic medium itself. Much
of this noise is repeatable in that identical waveforms
recorded in the same place on the medium (with an era-
sure in between) have highly correlated noise. This effect
is exploited in the present paper through the design of sys-
tems to estimate and subsequently correct the distortion of
the recorded waveform due to medium noise. The
approach may be applicable to other storage channels
whose noise is medium dependent such as magneto-optic
media. A method for optimally reducing repeatable addi-
tive medium noise is proposed. Simulations of this sys-
tem have been run and the results are promising.

  

Source: Agrawal, Rakesh - IBM T.J. Watson Research Center

 

Collections: Computer Technologies and Information Sciences