Study of adaptive nonlinear echo canceller with Volterra expansion

Jiande Chen, Joos Vandewalle

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

Abstract

A nonlinear echo canceller with Volterra series expansion is presented. A model of the data transmission system is used to study its performance. It is shown that the Volterra expansion method is a good solution to the problem of nonlinear echo cancellation. To sufficiently reduce the nonlinearities caused by A/D and D/A (analog/digital and digital/analog) converters, an adaptive third-order Volterra filter with a nonlinear memory of length 3 can be applied. The far-end signal has a very strong influence on the canceller. To reduce this, a training sequence without a far-end signal is used, and different values of the step-size μ are chosen for the transient period (larger μ) and for the steady state. Simulations have shown that the canceller can achieve 15-dB improvement with a training sequence and 8-dB improvement without the training sequence.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Editors Anon
PublisherPubl by IEEE
Pages1376-1379
Number of pages4
Volume2
StatePublished - 1989
Externally publishedYes
Event1989 International Conference on Acoustics, Speech, and Signal Processing - Glasgow, Scotland
Duration: May 23 1989May 26 1989

Other

Other1989 International Conference on Acoustics, Speech, and Signal Processing
CityGlasgow, Scotland
Period5/23/895/26/89

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ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

Cite this

Chen, J., & Vandewalle, J. (1989). Study of adaptive nonlinear echo canceller with Volterra expansion. In Anon (Ed.), ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 2, pp. 1376-1379). Publ by IEEE.