Performance of MMSE turbo equalization using outer LDPC coding for magnetic recording channels

Sedat Ölçer*, Mehmet Keskinöz

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We investigate the performance of minimum mean-square error turbo-equalization for LDPC-coded transmission over intersymbol-interference channels. The EXIT-chart technique is used to study the effect of code rate on the convergence of the turbo-equalization process. The analysis is conducted for partial-response channels of various types and for the magnetic recording channel. Performance results obtained from simulations show good agreement with the EXIT-chart analysis. They indicate that for applications requiring high code rates equalizerbased detection may suffer from a nonnegligible loss in performance as compared with maximum a posteriori detection.

Original languageEnglish
Pages (from-to)645-650
Number of pages6
JournalConference Record - International Conference on Communications
Publication statusPublished - 2004
Externally publishedYes
Event2004 IEEE International Conference on Communications - Paris, France
Duration: 20 Jun 200424 Jun 2004


  • Capacity-approaching codes
  • EXIT-chart analysis
  • LDPC codes
  • Magnetic recording
  • Turbo-equalization


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