An improved channel model for ADSL and VDSL systems
نویسندگان
چکیده
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.
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