Blind adaptive equalizer for broadband MIMO time reversal STBC based on PDF fitting

A. Daas, S. Bendoukha, S. Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)
62 Downloads (Pure)

Abstract

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
Title of host publicationConference record of 43rd asilomar conference on signals, systems & computers
Place of PublicationNew York
PublisherIEEE
Pages1380-1384
Number of pages5
ISBN (Print)9781424458257
DOIs
Publication statusPublished - Nov 2009
Event43rd Asilomar Conference on Signals, Systems, and Computer -
Duration: 1 Jan 1900 → …

Conference

Conference43rd Asilomar Conference on Signals, Systems, and Computer
Period1/01/00 → …

Keywords

  • signals
  • space-time block coded
  • probability density function
  • In this paper, we propose a new blind adaptive technique
  • stochastic gradient descent
  • MIMO channel
  • MIMO

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