A study of LDPC coding and iterative decoding system in magnetic recording system using bit-patterned medium with write error

Yasuaki Nakamura, Yoshihiro Okamoto, Hisashi Osawa, Hajime Aoi, Hiroaki Muraoka

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this paper, low-density parity-check (LDPC) coding and iterative decoding system is studied in the magnetic recording system using a bit-patterned medium (BPM). The magnetic recording system using BPM has a serious problem of requiring precise write synchronization to correctly write the recording sequence on each intended island. In this paper, an error locator using the parity-check matrix of LDPC code is utilized to curb the influence of write error on the iterative decoding process. The performance of the proposed system with the error locator is evaluated by computer simulation for magnetic recording system using BPM with synchronization write error at a recording density of 2 Tb/in2, and it is compared with a conventional Reed-Solomon (RS) encoding and decoding system. The results show that the proposed system provides better performance.

Original languageEnglish
Article number5257335
Pages (from-to)3753-3756
Number of pages4
JournalIEEE Transactions on Magnetics
Volume45
Issue number10
DOIs
Publication statusPublished - 2009 Oct 1

Keywords

  • Bit-patterned medium (BPM)
  • Iterative decoding
  • Low-density parity-check (LDPC) code
  • Write error

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'A study of LDPC coding and iterative decoding system in magnetic recording system using bit-patterned medium with write error'. Together they form a unique fingerprint.

  • Cite this