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An error-controlled detection method for PR-IV magnetic recording systems

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5 Author(s)
Younghwan Kim ; Wireless Commun. Syst. Res. & Dev. Team, Samsung Electr., Seoul, South Korea ; Cheolwoo You ; Ong, Sunghwan ; Keukjoon Bang
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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

Published in:

Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )

Date of Publication:

Sep 1997

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