Title :
An error-controlled detection method for PR-IV magnetic recording systems
Author :
Kim, Younghwan ; You, Cheolwoo ; Ong, Sunghwan ; Bang, Keukjoon ; Hong, Daesik
Author_Institution :
Wireless Commun. Syst. Res. & Dev. Team, Samsung Electr., Seoul, South Korea
fDate :
9/1/1997 12:00:00 AM
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
Keywords :
magnetic recording; partial response channels; PR-IV magnetic recording systems; channel modeling; error-controlled detection method; hardware complexity; high-density magnetic recording systems; Costs; Detectors; Equalizers; Frequency; Hardware; Least squares approximation; Magnetic noise; Magnetic recording; Maximum likelihood decoding; Maximum likelihood detection; Noise shaping; Nonlinear distortion; Space vector pulse width modulation;
Journal_Title :
Magnetics, IEEE Transactions on
