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ABSTRACT: The major advantage of PR-IV channel modeling on high-density
magnetic recording systems is that the maximum-likelihood sequence
detector (MLSD) with optimal performance can be used. However, the MLSD
has a complex structure and a high cost. Another detection method is the
three-level detector (TLD). Its structure is simpler than the MLSD's,
but its performance is extremely poor. Sometimes it is necessary to use
a detection method that has a simpler structure than the MLSD, yet
performs competitively. In this paper, a new detection scheme called an
error-controlled detection (ECD), is proposed for PR-IV systems. Its
hardware complexity is greatly reduced and the performance is
competitive with the MLSD
IEEE Transactions on Magnetics 10/1997; · 1.36 Impact Factor
