Soft-error-event decoding for multitrack magnetic recording channels

Bane Vasic, Vijay Venkateswaran

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Multiple-head array systems, which allow reading and writing of data simultaneously on multiple tracks, can potentially provide both high density and high speed, but the read-back signal in such systems is corrupted by intertrack interference (ITI) in addition to intersymbol interference (ISI). In this paper, we report on the performance of a multitrack system and propose a low-complexity multitrack soft-error-event decoder (SEED) to counter the effects of ISI and ITI. The multitrack SEED is based on a high-rate Bose-Chaudhuri-Hocquenghem code, and is capable of correcting most frequent error events produced by the channel. Used in conjunction with a joint partial response equalizer followed by an ITI equalizer, the SEED scheme provides a gain of 0.5-2 dB at a bit-error rate of 10-4 relative to an uncoded system.

Original languageEnglish (US)
Pages (from-to)492-497
Number of pages6
JournalIEEE Transactions on Magnetics
Issue number2 I
StatePublished - Mar 2004


  • Error-event decoding
  • Intersymbol interference (ISI)
  • Intertrack interference (ITI)
  • Joint partial response equalization
  • Maximum likelihood sequence detection
  • Parity check codes

ASJC Scopus subject areas

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


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