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Modeling Alien-Line Impedance Mismatch in Wideband Vectored Wireline Systems

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Author

  • Eduardo Medeiros
  • Thomas Magesacher
  • Per Ödling
  • Dong Wei
  • Xiang Wang
  • Qiaojie Li
  • Per-Erik Eriksson
  • Chenguang Lu
  • Jeroen Boschma
  • Bas van den Heuvel

Summary, in English

Sudden changes of channel coefficients in a wideband vectored wireline system (such as G.fast) due to changes in the terminating impedance of lines outside the vectored group can seriously degrade stability and throughput. This letter presents a model that predicts the impact of termination mismatch based exclusively on crosstalk data for the properly-terminated state. Experimental results confirm a tight fit between model and mea- surements. The model allows analysis of system performance and stability without dedicated crosstalk measurements for mismatch cases.

Publishing year

2014

Language

English

Pages

1527-1530

Publication/Series

IEEE Communications Letters

Volume

18

Issue

9

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Impedance matching
  • vectored transmission
  • DSL

Status

Published

Research group

  • Broadband Communication

ISBN/ISSN/Other

  • ISSN: 1089-7798