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Non-linear modeling of a broadband SLIC for ADSL-Lite-over-POTS using harmonic analysis

Koeppl, H. and Paoli, G. (2002):
Non-linear modeling of a broadband SLIC for ADSL-Lite-over-POTS using harmonic analysis.
Scottsdale, Arizona, USA, IEEE, In: 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), [Online-Edition: http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumbe...],
[Conference or Workshop Item]

Abstract

A new frequency domain based identification algorithm for the discrete-time Wiener model is presented. The Wiener model belongs to the class of Volterra models with factorizable kernels. Opposed to the general Volterra model, it is shown that the Wiener model can be uniquely identified, using harmonic analysis only. Therefore the given identification scheme is very suitable for real world applications, where only measurements from the spectrum analyzer are available. The derived method is applied to model large scale analog circuits. A broadband SLIC (subscriber line interface circuit) for an ADSL-Lite-over-POTS (asymmetric digital subscriber line, plain old telephone service) central office application is considered. Data acquisition is done by an analog network simulator. Simulation results for an IIR (infinite impulse response) filter representation of the Wiener model are compared to results obtained from the network simulator and to measurements from the laboratory. Emphasis is put on the accuracy of the intermodulation products, occurring when a multi-tone signal is applied. To improve the model performance, a non-linear optimization procedure in the time domain is considered

Item Type: Conference or Workshop Item
Erschienen: 2002
Creators: Koeppl, H. and Paoli, G.
Title: Non-linear modeling of a broadband SLIC for ADSL-Lite-over-POTS using harmonic analysis
Language: English
Abstract:

A new frequency domain based identification algorithm for the discrete-time Wiener model is presented. The Wiener model belongs to the class of Volterra models with factorizable kernels. Opposed to the general Volterra model, it is shown that the Wiener model can be uniquely identified, using harmonic analysis only. Therefore the given identification scheme is very suitable for real world applications, where only measurements from the spectrum analyzer are available. The derived method is applied to model large scale analog circuits. A broadband SLIC (subscriber line interface circuit) for an ADSL-Lite-over-POTS (asymmetric digital subscriber line, plain old telephone service) central office application is considered. Data acquisition is done by an analog network simulator. Simulation results for an IIR (infinite impulse response) filter representation of the Wiener model are compared to results obtained from the network simulator and to measurements from the laboratory. Emphasis is put on the accuracy of the intermodulation products, occurring when a multi-tone signal is applied. To improve the model performance, a non-linear optimization procedure in the time domain is considered

Volume: 2
Place of Publication: Scottsdale, Arizona, USA
Publisher: IEEE
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications > Bioinspired Communication Systems
18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications
Event Title: 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)
Date Deposited: 04 Apr 2014 12:35
Official URL: http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumbe...
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