Combinaton of nonlinear equalization and simple detection

Hangyu Cho, Choongchae Woo, Daesik Hong

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In the work of Sapthotharan K. Nair and J. Moon (IEEE Trans. Neural Nets., vol. 8, no. 5, pp. 1037-1048, 1997), the linear equalizer in PRML was replaced with a partial response neural equalizer (PRNEML) to combat nonlinear distortions, but overall complexities remained very high. Considering the RLL d=2 constraint, the Viterbi detector can be replaced with a simple discrete filter P(D-1) matched to target response P(D) (S. Gopalaswamy and R. Wood, Proc. SPIE vol. 3109, pp. 95-97, 1997). By using P(D)=1+D+D2 as a target response, discrete matched filter P(D-1) has no multiplications. Another advantage of the discrete matched filter structure is that decision feedback can be incorporated into neural networks. Overall structure of the decision feedback neural equalizer with discrete matched filter (DFNE/DMF) is shown. An optical recording channel is considered here, but the proposed system can be also applied to nonlinear magneto-optical and magnetic recording channels.

Original languageEnglish
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
Publication statusPublished - 2002
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference


Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002

Bibliographical note

Publisher Copyright:
©2002 IEEE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films


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