An improved channel model for ADSL and VDSL systems

D. Franklin, University of Wollongong
J. Xi, University of Wollongong
J. F. Chicharo, University of Wollongong

Article comments

This paper originally appeared as: Franklin, D, xi, J & Chicharo, J, An improved channel model for ADSL and VDSL systems, International Conference on Communication Technology Proceedings, 21-25 August 2000, vol 1, 30-33. Copyright IEEE 2000.

Abstract

This paper examines existing channel models used with xDSL systems and identifies a key shortcoming - namely, the implicit assumption that all impulse noise originates at the transmitter. Based on extensive data collected from the local loop, a new model is proposed which addresses this problem by combining a digital filter model of the transmission line with a distributed noise source. This better reflects the nature of a real telephone line, and thus provides a more solid basis for simulation and optimisation of xDSL systems.