Title :
A post-compensation scheme for peak-detect channel
Author :
Sutardja, Pantas
Author_Institution :
Almaden Res. Center, San Jose, CA, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
A postcompensation procedure for peak detection in disk-drive systems has been tested using a software channel on (2,7) RLL (run-length limited) codes. It uses a table lookup method to determine the detection-window boundaries for the center pulse in every three-pulse sequence. Preliminary test results against read-back equalization schemes suggest that the procedure may perform better than equalization techniques in terms of the ability to reduce the soft error rate. The technique does not boost the noise components of the read-back signal and thus may provide better phase-error reduction than read-back pulse-slimming equalization techniques
Keywords :
error statistics; hard discs; magnetic recording; detection-window boundaries; disk-drive systems; peak detection; phase-error reduction; postcompensation procedure; read-back equalization schemes; read-back pulse-slimming equalization techniques; read-back signal; soft error rate; software channel; table lookup method; three-pulse sequence; Clocks; Delay; Event detection; Histograms; Intersymbol interference; Jitter; Magnetic recording; Performance evaluation; Phase detection; System testing;
Journal_Title :
Magnetics, IEEE Transactions on
