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Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/10005
Title: Exploiting Common Mode signals for FEXT cancellation in upstream VDSL
Authors: Zafaruddin, S.M.
Keywords: EEE
Common mode signals
Upstream VDSL
Far end crosstalk cancellation
Very high-speed digital subscriber line
Stochastic channel
Issue Date: 2008
Publisher: IEEE
Abstract: In this paper, we study the utility of the Common Mode (CM) signal for Far End Crosstalk (FEXT) cancellation in upstream Very high-speed Digital Subscriber Line (VDSL). We begin by extending the stochastic channel model developed for Differential Mode (DM) signals to model the channels of both CM and DM signals. The characteristics of the resulting CM-DM joint channel are first studied. This is expected to help in the development of computationally efficient algorithms for FEXT cancellation. In, the capacity improvement with use of CM-DM was studied for the overall channel. The rate gain with CM-DM joint processing as compared to DM only processing is shown to be a strong function of frequency and the loop length, an observation that is of critical importance for development of FEXT cancellation algorithms. It is shown that such joint processing is beneficial for longer loops and for high frequency subcarriers.
URI: https://ieeexplore.ieee.org/abstract/document/4768746
http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/10005
Appears in Collections:Department of Electrical and Electronics Engineering

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