Combined concatenated coding and nonlinear equalization for magnetic recording channels

Ali Ghrayeb

doi:10.1109/TMAG.2002.801871

Combined concatenated coding and nonlinear equalization for magnetic recording channels

Ali Ghrayeb^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Pages (from-to)	2298-2300
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	5 I
DOIs	https://doi.org/10.1109/TMAG.2002.801871
Publication status	Published - Sept 2002
Externally published	Yes
Event	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: 28 Apr 2002 → 2 May 2002

Keywords

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

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10.1109/TMAG.2002.801871

Cite this

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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.",

keywords = "Concatenated coding, Magnetic recording, Non-linear equalization, Partial erasure, Soft-output Viterbi algorithm",

author = "Ali Ghrayeb",

year = "2002",

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language = "English",

volume = "38",

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AB - 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.

KW - Concatenated coding

KW - Magnetic recording

KW - Non-linear equalization

KW - Partial erasure

KW - Soft-output Viterbi algorithm

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IS - 5 I

T2 - 2002 International Magnetics Conference (Intermag 2002)

Y2 - 28 April 2002 through 2 May 2002

ER -

Combined concatenated coding and nonlinear equalization for magnetic recording channels

Abstract

Keywords

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