Subband adaptive equalisation of time-varying channels

Robert Stewart, Stephan Weiss, Daniel Garcia-Alis, Graham Freeland

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)


The potential presence of fractional delays, nonminimum phase parts, and a colouring of the channel output can require very large adaptive equalizers exhibiting slow convergence for LMS-type algorithms. In this paper, we address the equalization problem via a subband approach, which can significantly reduce computational complexity and improve convergence speed. Of particular interest in this paper is the tracking behaviour, which determines the speed with which the algorithm is capable of following time variations in the channel. We give reasons why tracking of LMS-type subband adaptive algorithms should be comparable to the full-band case. Simulation results with a time varying channel are presented.
Original languageEnglish
Number of pages5
Publication statusPublished - Oct 1999
Event33rd Asilomar Conference on Signals, Systems, and Computers - Pacific Grove, CA, United States
Duration: 24 Oct 199927 Oct 1999


Conference33rd Asilomar Conference on Signals, Systems, and Computers
CountryUnited States
CityPacific Grove, CA


  • adaptive algorithm
  • adaptive equalizers
  • adaptive filters
  • adaptive systems
  • convergence
  • time-varying channels

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