Combined concatenated coding and nonlinear equalization for magnetic recording channels

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Abstract

In this paper, we combine concatenated coding (with iterative decoding) and equalization for nonlinear magnetic recording channels. We modify the iterative soft-output Viterbi algorithm to incorporate a nonlinear equalizer capable of removing both precursor and postcursor (nonlinear) ISI. We adopt a simple partial erasure model against which we examine the proposed algorithm for parallel and serial concatenated codes where code rate 16/17 is considered. We demonstrate, via simulations, that improvements of about 2.5 dB at a bit-error rate of 10-6 are possible.

Original languageEnglish
Pages (from-to)2298-2300
Number of pages3
JournalIEEE Transactions on Magnetics
Volume38
Issue number5 I
DOIs
Publication statusPublished - Sep 2002
Externally publishedYes

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Keywords

  • Concatenated coding
  • Magnetic recording
  • Non-linear equalization
  • Partial erasure
  • Soft-output Viterbi algorithm

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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