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Exploiting the Common-Mode Signal in xDSL

Author

Summary, in English

Communication over the copper twisted-pair channel is performed by transmitting and receiving differential-mode (DM) signals. In this paper, we extend the conventional DM receive scheme by incorporating the common-mode (CM) signal, which can be extracted at the end of every wire pair. We assess the potential of this idea for digital subscriber line systems (xDSL) in terms of channel capacity using channel measurement data.

We show that especially those scenarios that suffer strong interference benefit most from joint DM-CM processing, since the interference at the DM port is strongly correlated with the interference at the CM port in these cases. Numerical evaluation of VDSL example scenarios shows that the capacity of the twisted-pair channel when using also the CM signal can exceed the capacity of the conventional DM channel by a factor of up to three.

Publishing year

2004

Language

English

Pages

1217-1220

Publication/Series

12th European Signal Processing Conference, EUSIPCO 2004

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

12th European Signal Processing Conference EUSIPCO, 2004

Conference date

2004-09-06 - 2004-09-10

Conference place

Vienna, Austria

Status

Published

ISBN/ISSN/Other

  • ISBN: 978-320000165-7