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

Younghwan Kim, Cheolwoo You, Sunghwan Ong, Keukjoon Bang, Daesik Hong

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)2791-2793
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 1
Publication statusPublished - 1997

Bibliographical note

Funding Information:
Manuscript received February 1, 1997. y. H. Kim, 82-2-405-1687, fax 82.2-405-1558, e-mail kyhwan@tele-, C. W. YOU, 82-2-361-2865; D. S. Hong, 82-2-361-287 1, fax 82-2-361-4887, e-mail This work was supported in part by a research grant of the university supporting program from the Ministry of Information and Communication of Republic of Korea.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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