TY - JOUR
T1 - A study of interactive processing between PRML detection and erasure error correction in perpendicular recording
AU - Nakamura, Yasuaki
AU - Okamoto, Yoshihiro
AU - Osawa, Hisashi
AU - Muraoka, Hiroaki
AU - Nakamura, Yoshihisa
N1 - Funding Information:
Manuscript received September 20, 2003; revised November 15, 2003. This work was supported in part by the Scientific Research of Japan Society for the Promotion of Science under Grant-in-Aid 15560330 and the Storage Research Consortium, Japan under a Grant-in-Aid.
PY - 2004/7
Y1 - 2004/7
N2 - In this paper, the interactive processing between a partial-response maximum-likelihood (PRML) channel and a decoder for the Reed-Solomon (RS) code is studied in perpendicular magnetic recording channel. Whereas in conventional systems a run-length-limited (RLL) encoder/decoder is insides the RS encoder/decoder, in this paper, we permute their positions so that the PRML channel and RS decoder can interact. Accordingly, the RS decoder can acquire reliability information from a PRML channel without interruption by the RLL decoder. It is demonstrated by computer simulation that the proposed system provides an SNR improvement of 0.8-1.1 dB compared with a conventional system at a linear density normalized by user bit interval, K, of 1.5.
AB - In this paper, the interactive processing between a partial-response maximum-likelihood (PRML) channel and a decoder for the Reed-Solomon (RS) code is studied in perpendicular magnetic recording channel. Whereas in conventional systems a run-length-limited (RLL) encoder/decoder is insides the RS encoder/decoder, in this paper, we permute their positions so that the PRML channel and RS decoder can interact. Accordingly, the RS decoder can acquire reliability information from a PRML channel without interruption by the RLL decoder. It is demonstrated by computer simulation that the proposed system provides an SNR improvement of 0.8-1.1 dB compared with a conventional system at a linear density normalized by user bit interval, K, of 1.5.
KW - Error correction code (ECC)
KW - Partial-response maximum-likelihood (PRML) channel
KW - Perpendicular magnetic recording
KW - Reed-solomon (RS) code
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U2 - 10.1109/TMAG.2004.829284
DO - 10.1109/TMAG.2004.829284
M3 - Article
AN - SCOPUS:4444233208
VL - 40
SP - 3105
EP - 3107
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 4 II
ER -