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Turbo equalization and an M-BCJR algorithm for strongly narrowband intersymbol interference

Publiceringsår: 2010
Språk: Engelska
Sidor: 261-266
Dokumenttyp: Konferensbidrag
Förlag: IEEE


An M-BCJR algorithm is proposed and tested over
an AWGN channel with moderate to very intense intersymbol
interference (ISI). Two M-BCJR applications are evaluated,
simple detection over the ISI channel and turbo equalization.
The signaling is binary faster than Nyquist linear modulation.
The ISI models tested correspond to transmission of increasingly
many bits/Hz-s with a fixed signal spectra; the paper studies
the range 2–8 bits/Hz-s, which implies ISI models as long as 32
taps. As a simple detector, the M-BCJR achieves the ML error
rate with small computation, even when the Viterbi algorithm is
completely impractical. In turbo equalization, the M-BCJR needs
somewhat more computation and a more careful design because
it must produce accurate likelihoods.



  • Electrical Engineering, Electronic Engineering, Information Engineering
  • turbo coding
  • iterative decoding
  • equalization
  • Digital communication


International Symposium on Information Theory and Its Applications (ISITA), 2010
Taichung, Taiwan
  • Stiftelsen för Strategisk Forskning
  • EIT_HSWC:Coding Coding, modulation, security and their implementation
  • Informations- och kommunikationsteori
  • Telecommunication Theory
  • ISBN: 978-1-4244-6014-4

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