Noise predictive belief propagation

Mustafa N. Kaynak, Tolga M. Duman, Erozan M. Kurtas

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


We introduce iterative noise whitening for belief-propagation-based channel detectors over intersymbol interference channels with correlated additive noise. In particular, we consider longitudinal magnetic recording systems. The proposed "noise predictive belief propagation" (NPBP) detector iteratively whitens the noise samples by modifying the edge probability computation. NPBP detectors based on finite impulse response and infinite impulse response prediction filters are developed. In addition, we introduce a novel prediction filter optimization method leading to a better noise whitening performance. Simulation results for both coded and uncoded systems show that significant improvements can be obtained.

Original languageEnglish (US)
Pages (from-to)4427-4434
Number of pages8
JournalIEEE Transactions on Magnetics
Issue number12
StatePublished - Dec 2005


  • Belief propagation
  • Channel detection
  • Longitudinal recording channels
  • Noise prediction

ASJC Scopus subject areas

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


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