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

Författare:
Publiceringsår: 2010
Språk: Engelska
Sidor: 261-266
Publikation/Tidskrift/Serie: [Host publication title missing]
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.

Sammanfattning

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.

Nyckelord

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

Övriga

International Symposium on Information Theory and Its Applications (ISITA), 2010
Published
  • EIT_HSWC:Coding Coding, modulation, security and their implementation
  • Informations- och kommunikationsteori-lup-obsolete
  • Telecommunication Theory-lup-obsolete
  • ISBN: 978-1-4244-6014-4

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