Combined turbo equalization and turbo decoding

Dan Raphaeli*, Yoram Zarai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Scopus citations


In this letter, the subject of turbo coding in the presence of intersymbol interference channel will be investigated. An iterative decoder structure will be presented, which combines the channel equalization and the turbo decoding. At each iteration extrinsic information from the channel detector is fed into the turbo decoders, and then their extrinsic information is fed back to the channel detector. Simulation results are presented for rate 1/2 turbo code with binary phase-shift keying (BPSK) modulation, transmitted over intersymbol interference (ISI) channel having severe frequency distortion. The performance is about 0.8 dB from the ISI channel capacity at bit-error rate of 10-5.

Original languageEnglish
Pages (from-to)107-109
Number of pages3
JournalIEEE Communications Letters
Issue number4
StatePublished - 1998


  • Equalization
  • ISI
  • Turbo codes


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