|
 |
Magnetic recording system design to reduce medium noise through signal precompensation
Written by:
Joseph A. O'Sullivan,
Dakshi Agrawal,
Donald Porter,
Ronald S. Indeck,
and
Marcel W. Muller.
Citation:
Proceedings of 28th Conference on Information Sciences and Systems
(CISS), pages 1152-1157, 1994.
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 erasure in between) have highly correlated noise. This effect
is exploited in the present paper through the design of systems 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 additive medium noise
is proposed. Simulations of this system have been run and the results
are promising.
|
|
United States
