A subband adaptive equalization structure

Stephan Weiss, Daniel Garcia-Alis, Robert Stewart

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The potential presence of fractional delays, non-minimum phase parts, and a colouring of the channel output can require adaptive equalizers to adapt very long impulse responses. Besides resulting in a large computational complexity, this will in general cause slow convergence for LMS-type adaptive algorithms. In this paper, we address the equalization problem by a subband approach to reduce computational complexity and to improve convergence speed. We discuss, why amongst other possibilities of subband processing the oversampled approach is particularly appealing to significantly reduce computational complexity and improve convergence speed. Simulation results for a typical communication channels are presented and highlight the benefit of our method.

Conference

ConferenceIEE Colloquium on Novel DSP Applications in Radio Systems
CountryUnited Kingdom
CityLondon
Period28/09/9928/09/99

Fingerprint

Computational complexity
Equalizers
Coloring
Adaptive algorithms
Impulse response
Processing

Keywords

  • adaptive equalisers
  • adaptive filters
  • computational complexity
  • convergence
  • telecommunication channels
  • subband
  • adaptive equalization structure

Cite this

Weiss, S., Garcia-Alis, D., & Stewart, R. (1999). A subband adaptive equalization structure. 4/1-4/7. Paper presented at IEE Colloquium on Novel DSP Applications in Radio Systems, London, United Kingdom. https://doi.org/10.1049/ic:19990846
Weiss, Stephan ; Garcia-Alis, Daniel ; Stewart, Robert. / A subband adaptive equalization structure. Paper presented at IEE Colloquium on Novel DSP Applications in Radio Systems, London, United Kingdom.7 p.
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Weiss, S, Garcia-Alis, D & Stewart, R 1999, 'A subband adaptive equalization structure' Paper presented at IEE Colloquium on Novel DSP Applications in Radio Systems, London, United Kingdom, 28/09/99 - 28/09/99, pp. 4/1-4/7. https://doi.org/10.1049/ic:19990846

A subband adaptive equalization structure. / Weiss, Stephan; Garcia-Alis, Daniel; Stewart, Robert.

1999. 4/1-4/7 Paper presented at IEE Colloquium on Novel DSP Applications in Radio Systems, London, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - A subband adaptive equalization structure

AU - Weiss, Stephan

AU - Garcia-Alis, Daniel

AU - Stewart, Robert

PY - 1999

Y1 - 1999

N2 - The potential presence of fractional delays, non-minimum phase parts, and a colouring of the channel output can require adaptive equalizers to adapt very long impulse responses. Besides resulting in a large computational complexity, this will in general cause slow convergence for LMS-type adaptive algorithms. In this paper, we address the equalization problem by a subband approach to reduce computational complexity and to improve convergence speed. We discuss, why amongst other possibilities of subband processing the oversampled approach is particularly appealing to significantly reduce computational complexity and improve convergence speed. Simulation results for a typical communication channels are presented and highlight the benefit of our method.

AB - The potential presence of fractional delays, non-minimum phase parts, and a colouring of the channel output can require adaptive equalizers to adapt very long impulse responses. Besides resulting in a large computational complexity, this will in general cause slow convergence for LMS-type adaptive algorithms. In this paper, we address the equalization problem by a subband approach to reduce computational complexity and to improve convergence speed. We discuss, why amongst other possibilities of subband processing the oversampled approach is particularly appealing to significantly reduce computational complexity and improve convergence speed. Simulation results for a typical communication channels are presented and highlight the benefit of our method.

KW - adaptive equalisers

KW - adaptive filters

KW - computational complexity

KW - convergence

KW - telecommunication channels

KW - subband

KW - adaptive equalization structure

U2 - 10.1049/ic:19990846

DO - 10.1049/ic:19990846

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Weiss S, Garcia-Alis D, Stewart R. A subband adaptive equalization structure. 1999. Paper presented at IEE Colloquium on Novel DSP Applications in Radio Systems, London, United Kingdom. https://doi.org/10.1049/ic:19990846