Iterative decoding using attenuated extrinsic information from sum-product decoder for PMR channel with patterned medium

Yasuaki Nakamura, Mitsuhiro Nishimura, Yoshihiro Okamoto, Hisashi Osawa, Hajime Aoi, Hiroaki Muraoka, Yoshihisa Nakamura

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An LDPC coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned medium. We propose an iterative decoding scheme using attenuated extrinsic information from a sum-product decoder, and the bit error rate (BER) performance of the LDFC coding and iterative decoding system is evaluated by R/W computer simulations. It has been clarified that at an area] density of 1 Tbpsi the proposed system provides a jitter margin of the island edges of approximately 0.6 % larger than the conventional system using (3, 18)-regular LDPC code.

Original languageEnglish
Pages (from-to)2277-2279
Number of pages3
JournalIEEE Transactions on Magnetics
Volume43
Issue number6
DOIs
Publication statusPublished - 2007 Jun 1

Keywords

  • Iterative decoding
  • LDPC codes
  • Patterned medium
  • Perpendicular magnetic recording (PMR)

ASJC Scopus subject areas

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

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