Study of an extended partial-response, class IV, channel for digital magnetic recording

Yinyi Lin; Char Yuan Yeh

doi:10.1109/20.620452

Study of an extended partial-response, class IV, channel for digital magnetic recording

Yinyi Lin, Char Yuan Yeh

Department of Communication Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this work, we study an EPR-IV system for high density digital recording and compare it to the PRML recording system. A combinatorial optimization technique that uses the simulated annealing algorithm in conjunction with a descent method is employed for optimization of partial response (PR) equalizers. The gradient algorithm to track variations of timing phase for the EPR-IV channel is investigated. Also, a generalized Viterbi algorithm is used for detecting the EPR-IV system. Simulation results demonstrate that at high recording density, a coding gain over the PRML system can be obtained for the EPR-IV system with a comparable complexity.

Original language	English
Pages (from-to)	4392-4404
Number of pages	13
Journal	IEEE Transactions on Magnetics
Volume	33
Issue number	5 PART 3
DOIs	https://doi.org/10.1109/20.620452
State	Published - 1997

Keywords

Generalized Viterbi algorithm
Partial response maximum likelihood (PRML) channel
Simulated annealing
Timing recovery

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10.1109/20.620452

Cite this

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abstract = "In this work, we study an EPR-IV system for high density digital recording and compare it to the PRML recording system. A combinatorial optimization technique that uses the simulated annealing algorithm in conjunction with a descent method is employed for optimization of partial response (PR) equalizers. The gradient algorithm to track variations of timing phase for the EPR-IV channel is investigated. Also, a generalized Viterbi algorithm is used for detecting the EPR-IV system. Simulation results demonstrate that at high recording density, a coding gain over the PRML system can be obtained for the EPR-IV system with a comparable complexity.",

keywords = "Generalized Viterbi algorithm, Partial response maximum likelihood (PRML) channel, Simulated annealing, Timing recovery",

author = "Yinyi Lin and Yeh, {Char Yuan}",

note = "Funding Information: Manuscript received August 1, 1996; revised April 26, 1997. This work was presented in part at the INTERMAG Conference'97, New Orleans, LA, Apr. 1-4, 1997. This work was supported by the National Science Council. R.O.C., under Contract NSC 86-2213-E-008-016. The authors are with the Department of Electrical Engineering, National Central University, Chung Li, Taiwan 32054, R.O.C. Publisher Item Identifier S 0018-9464(97)05864-0.",

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N2 - In this work, we study an EPR-IV system for high density digital recording and compare it to the PRML recording system. A combinatorial optimization technique that uses the simulated annealing algorithm in conjunction with a descent method is employed for optimization of partial response (PR) equalizers. The gradient algorithm to track variations of timing phase for the EPR-IV channel is investigated. Also, a generalized Viterbi algorithm is used for detecting the EPR-IV system. Simulation results demonstrate that at high recording density, a coding gain over the PRML system can be obtained for the EPR-IV system with a comparable complexity.

AB - In this work, we study an EPR-IV system for high density digital recording and compare it to the PRML recording system. A combinatorial optimization technique that uses the simulated annealing algorithm in conjunction with a descent method is employed for optimization of partial response (PR) equalizers. The gradient algorithm to track variations of timing phase for the EPR-IV channel is investigated. Also, a generalized Viterbi algorithm is used for detecting the EPR-IV system. Simulation results demonstrate that at high recording density, a coding gain over the PRML system can be obtained for the EPR-IV system with a comparable complexity.

KW - Generalized Viterbi algorithm

KW - Partial response maximum likelihood (PRML) channel

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KW - Timing recovery

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Study of an extended partial-response, class IV, channel for digital magnetic recording

Abstract

Keywords

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