Blind adaptive equalizer for broadband MIMO STBC based on PDF matching

S. Bendoukha, A. Daas, S. Weiss

Research output: Contribution to conferencePaper

1 Citation (Scopus)


In this paper, we propose a new blind adaptive technique used for the equalisation of space-time block coded (STBC) signals transmitted over a dispersive MIMO channel. The proposed approach is based on minimising the difference between the probability density function (PDF) of the equalizer
output — estimated via the Parzen window method — and a desired PDF based on the source symbols. The cost function combines this PDF fitting with an orthogonality criterion derived from the STBC structure of the transmitted data
in order to discourage the extraction of identical signals. This cost function motivates an effective and low-cost stochastic gradient descent algorithm for adapting the equaliser. The performance is demonstrated in a number of simulations and benchmarked against other blind schemes for the equalisation
of STBC over broadband MIMO channels.
Original languageEnglish
Number of pages4
Publication statusPublished - Aug 2009
Event17th European Signal Processing Conference - Glasgow, Scotland
Duration: 24 Aug 200928 Aug 2009


Conference17th European Signal Processing Conference
CityGlasgow, Scotland


  • blind adaptive technique
  • space-time block coded
  • MIMO
  • probability density function
  • broadband MIMO channels

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