Performance Improvement of PRML System for (1, 7) RLL Code

Hisashi OSAWA; Makoto OKADA; Kohei WAKAMIYA; Yoshihiro OKAMOTO

Performance Improvement of PRML System for (1, 7) RLL Code

Hisashi OSAWA, Makoto OKADA, Kohei WAKAMIYA, Yoshihiro OKAMOTO

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The performance improvement of the partial response maximum-likelihood (PRML) system for (1, 7) run-length limited (RLL) code is studied. As a new PRML system, PR (1, 1, 0, 1, 1) system called modified E²PR4 (ME²PR4 ) followed by Viterbi detector for (1, 7) RLL code is proposed. At first, a determination method of the tap weights in transversal filter to equalize to PR (1, 1, 0, 1, 1) characteristic taking account of a noise correlation is described. And the equalization characteristics of the transversal filter are evaluated. Then, a Viterbi detector for ME²PR4 utilizing the constraint of run-length of (1, 7) RLL code is presented. Finally, the bit-error rate is obtained by computer simulation and the performance is compared with that of the conventional PRML systems called PR4, EPR4 and E²PR4 systems with Viterbi detector. The results show that among these systems our system exhibits the best performance and the SNR improvement increases with the increase in the linear density.

Publication: IEICE TRANSACTIONS on Electronics Vol.E79-C No.10 pp.1455-1461

Publication Date: 1996/10/25

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Type of Manuscript: PAPER

Category: Recording and Memory Technologies

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Hisashi OSAWA, Makoto OKADA, Kohei WAKAMIYA, Yoshihiro OKAMOTO, "Performance Improvement of PRML System for (1, 7) RLL Code" in IEICE TRANSACTIONS on Electronics, vol. E79-C, no. 10, pp. 1455-1461, October 1996, doi: .
Abstract: The performance improvement of the partial response maximum-likelihood (PRML) system for (1, 7) run-length limited (RLL) code is studied. As a new PRML system, PR (1, 1, 0, 1, 1) system called modified E²PR4 (ME²PR4 ) followed by Viterbi detector for (1, 7) RLL code is proposed. At first, a determination method of the tap weights in transversal filter to equalize to PR (1, 1, 0, 1, 1) characteristic taking account of a noise correlation is described. And the equalization characteristics of the transversal filter are evaluated. Then, a Viterbi detector for ME²PR4 utilizing the constraint of run-length of (1, 7) RLL code is presented. Finally, the bit-error rate is obtained by computer simulation and the performance is compared with that of the conventional PRML systems called PR4, EPR4 and E²PR4 systems with Viterbi detector. The results show that among these systems our system exhibits the best performance and the SNR improvement increases with the increase in the linear density.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e79-c_10_1455/_p

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@ARTICLE{e79-c_10_1455,
author={Hisashi OSAWA, Makoto OKADA, Kohei WAKAMIYA, Yoshihiro OKAMOTO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Performance Improvement of PRML System for (1, 7) RLL Code},
year={1996},
volume={E79-C},
number={10},
pages={1455-1461},
abstract={The performance improvement of the partial response maximum-likelihood (PRML) system for (1, 7) run-length limited (RLL) code is studied. As a new PRML system, PR (1, 1, 0, 1, 1) system called modified E²PR4 (ME²PR4 ) followed by Viterbi detector for (1, 7) RLL code is proposed. At first, a determination method of the tap weights in transversal filter to equalize to PR (1, 1, 0, 1, 1) characteristic taking account of a noise correlation is described. And the equalization characteristics of the transversal filter are evaluated. Then, a Viterbi detector for ME²PR4 utilizing the constraint of run-length of (1, 7) RLL code is presented. Finally, the bit-error rate is obtained by computer simulation and the performance is compared with that of the conventional PRML systems called PR4, EPR4 and E²PR4 systems with Viterbi detector. The results show that among these systems our system exhibits the best performance and the SNR improvement increases with the increase in the linear density.},
keywords={},
doi={},
ISSN={},
month={October},}

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TY - JOUR
TI - Performance Improvement of PRML System for (1, 7) RLL Code
T2 - IEICE TRANSACTIONS on Electronics
SP - 1455
EP - 1461
AU - Hisashi OSAWA
AU - Makoto OKADA
AU - Kohei WAKAMIYA
AU - Yoshihiro OKAMOTO
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E79-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 1996
AB - The performance improvement of the partial response maximum-likelihood (PRML) system for (1, 7) run-length limited (RLL) code is studied. As a new PRML system, PR (1, 1, 0, 1, 1) system called modified E²PR4 (ME²PR4 ) followed by Viterbi detector for (1, 7) RLL code is proposed. At first, a determination method of the tap weights in transversal filter to equalize to PR (1, 1, 0, 1, 1) characteristic taking account of a noise correlation is described. And the equalization characteristics of the transversal filter are evaluated. Then, a Viterbi detector for ME²PR4 utilizing the constraint of run-length of (1, 7) RLL code is presented. Finally, the bit-error rate is obtained by computer simulation and the performance is compared with that of the conventional PRML systems called PR4, EPR4 and E²PR4 systems with Viterbi detector. The results show that among these systems our system exhibits the best performance and the SNR improvement increases with the increase in the linear density.
ER -