Linear echo cancellation using optimized orthogonal recursive filters

A. Kaelin; G. S. Moschytz

doi:10.1109/icsyse.1992.236915

Linear echo cancellation using optimized orthogonal recursive filters

A. Kaelin
, G. S. Moschytz

Swiss Federal Institute of Technology Zurich

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

In order to reduce the circuit complexity associated with the estimation of echos corning from systems with long impulse responses, we consider an estimation which is based on orthoganal prefiltered input data. We propose a design of this prefilter which is optimal far a &ea system environment. In doing so, we represent the unknown discrete-time system by a set of characteristic unit-sample responses, which adequately describe the variation of the system. We introduce a flexible orthogonal filter which is based on the inverse lattice filter and suggest how to optimize its poles. The obtained poles are fixed during the on-line estimation process, which estimates the unknown system output by linearly weighting a set of optimally prefiltered input data. A 70dB echo canceller for the North American telephone subscriber loop environment is used as an example.

Original language	English
Title of host publication	Proceedings of the IEEE International Conference on Systems Engineering
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	173-176
Number of pages	4
ISBN (Electronic)	0780307348, 9780780307346
DOIs	https://doi.org/10.1109/icsyse.1992.236915
State	Published - 1992
Externally published	Yes
Event	1992 IEEE International Conference on Systems Engineering - Kobe, Japan Duration: 17 Sep 1992 → 19 Sep 1992

Publication series

Name	Proceedings of the IEEE International Conference on Systems Engineering

Conference

Conference	1992 IEEE International Conference on Systems Engineering
Country/Territory	Japan
City	Kobe
Period	17/09/92 → 19/09/92

Bibliographical note

Publisher Copyright:
© 1992 IEEE.

Access to Document

10.1109/icsyse.1992.236915

Cite this

Kaelin, A., & Moschytz, G. S. (1992). Linear echo cancellation using optimized orthogonal recursive filters. In Proceedings of the IEEE International Conference on Systems Engineering (pp. 173-176). Article 236915 (Proceedings of the IEEE International Conference on Systems Engineering). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/icsyse.1992.236915

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title = "Linear echo cancellation using optimized orthogonal recursive filters",

abstract = "In order to reduce the circuit complexity associated with the estimation of echos corning from systems with long impulse responses, we consider an estimation which is based on orthoganal prefiltered input data. We propose a design of this prefilter which is optimal far a \&ea system environment. In doing so, we represent the unknown discrete-time system by a set of characteristic unit-sample responses, which adequately describe the variation of the system. We introduce a flexible orthogonal filter which is based on the inverse lattice filter and suggest how to optimize its poles. The obtained poles are fixed during the on-line estimation process, which estimates the unknown system output by linearly weighting a set of optimally prefiltered input data. A 70dB echo canceller for the North American telephone subscriber loop environment is used as an example.",

author = "A. Kaelin and Moschytz, \{G. S.\}",

note = "Publisher Copyright: {\textcopyright} 1992 IEEE.; 1992 IEEE International Conference on Systems Engineering ; Conference date: 17-09-1992 Through 19-09-1992",

year = "1992",

doi = "10.1109/icsyse.1992.236915",

language = "אנגלית",

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Kaelin, A & Moschytz, GS 1992, Linear echo cancellation using optimized orthogonal recursive filters. in Proceedings of the IEEE International Conference on Systems Engineering., 236915, Proceedings of the IEEE International Conference on Systems Engineering, Institute of Electrical and Electronics Engineers Inc., pp. 173-176, 1992 IEEE International Conference on Systems Engineering, Kobe, Japan, 17/09/92. https://doi.org/10.1109/icsyse.1992.236915

Linear echo cancellation using optimized orthogonal recursive filters. / Kaelin, A.; Moschytz, G. S.
Proceedings of the IEEE International Conference on Systems Engineering. Institute of Electrical and Electronics Engineers Inc., 1992. p. 173-176 236915 (Proceedings of the IEEE International Conference on Systems Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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ER -

Linear echo cancellation using optimized orthogonal recursive filters

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