Title :
Performance of a d=0 Demod/Remod detector with partial erasure matching
Author :
Reed, David E. ; Sundell, Lisa C.
Author_Institution :
Cirrus Logic, Broomfield, CO, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
This paper describes the bit-error-rate (BER) performance of a Demod/Remod detector matched to a magnetic recording playback signal with partial erasure (PE) having d=0 run-length-limited (RLL) coded data. Previous work on Viterbi detection with PE is extended by the discovery of a 10-state detector and by generalizing the technique to an EPR4 partial-response target. A Demod/Remod detector is described which approximates the EPR4/PE detector with lower complexity. BER performance results are given for this detector on data taken from a commercially available magnetic disk drive
Keywords :
magnetic recording; maximum likelihood detection; partial response channels; runlength codes; Demod/Remod detector; EPR4 partial-response target; Viterbi detection; bit error rate; magnetic disk drive; magnetic recording playback signal; partial erasure matching; run-length-limited code; Bit error rate; Degradation; Detectors; Disk drives; Frequency measurement; Gas detectors; Logic; Magnetic flux; Magnetic recording; Viterbi algorithm; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
