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Estimation of Nonhomogeneous and Multi-Section Twisted-Pair Transmission-Line Parameters

Lindqvist, Fredrik; Magesacher, Thomas LU ; Fertner, Antoni LU ; Ödling, Per LU and Boresson, Per Ola (2015) In IEEE Transactions on Microwave Theory and Techniques 63(11). p.3568-3578
Abstract
In emerging and future copper access networks, the trend goes towards exploiting higher transmission bandwidths on shorter twisted-pair cables. Methods to accurately determine relevant transmission-line parameters are a prerequisite to exploit the potential of these short-to-medium range access lines. In this paper, we propose a model-based space-frequency optimization approach initially developed for microwave applications. By utilizing the concept of capacitive length, two major advances are achieved. First, we overcome the requirement of a priori information of physical line length. Second, the number of parameters is reduced compared to prior art. We introduce two estimators to illustrate the concept. A low-complexity estimator with... (More)
In emerging and future copper access networks, the trend goes towards exploiting higher transmission bandwidths on shorter twisted-pair cables. Methods to accurately determine relevant transmission-line parameters are a prerequisite to exploit the potential of these short-to-medium range access lines. In this paper, we propose a model-based space-frequency optimization approach initially developed for microwave applications. By utilizing the concept of capacitive length, two major advances are achieved. First, we overcome the requirement of a priori information of physical line length. Second, the number of parameters is reduced compared to prior art. We introduce two estimators to illustrate the concept. A low-complexity estimator with only two parameters per spatial unit primarily targets higher frequencies. A wideband estimator with three parameters per spatial unit extends to the lower frequencies used by operational digital subscriber line services. Performance and limitations of the approach are illustrated by both computer simulations and measurements. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Electromagnetic modeling, instrumentation and measurement techniques, nonuniform transmission lines, numerical techniques, optimization, propagation in complex media, transmission-line theory
in
IEEE Transactions on Microwave Theory and Techniques
volume
63
issue
11
pages
3568 - 3578
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000364870800003
  • scopus:84959569445
ISSN
0018-9480
DOI
10.1109/TMTT.2015.2481386
language
English
LU publication?
yes
id
3a313b72-1702-43c3-800e-77862a5b5ba5 (old id 8539721)
date added to LUP
2016-01-20 12:17:12
date last changed
2017-01-01 06:06:43
@article{3a313b72-1702-43c3-800e-77862a5b5ba5,
  abstract     = {In emerging and future copper access networks, the trend goes towards exploiting higher transmission bandwidths on shorter twisted-pair cables. Methods to accurately determine relevant transmission-line parameters are a prerequisite to exploit the potential of these short-to-medium range access lines. In this paper, we propose a model-based space-frequency optimization approach initially developed for microwave applications. By utilizing the concept of capacitive length, two major advances are achieved. First, we overcome the requirement of a priori information of physical line length. Second, the number of parameters is reduced compared to prior art. We introduce two estimators to illustrate the concept. A low-complexity estimator with only two parameters per spatial unit primarily targets higher frequencies. A wideband estimator with three parameters per spatial unit extends to the lower frequencies used by operational digital subscriber line services. Performance and limitations of the approach are illustrated by both computer simulations and measurements.},
  author       = {Lindqvist, Fredrik and Magesacher, Thomas and Fertner, Antoni and Ödling, Per and Boresson, Per Ola},
  issn         = {0018-9480},
  keyword      = {Electromagnetic modeling,instrumentation and measurement techniques,nonuniform transmission lines,numerical techniques,optimization,propagation in complex media,transmission-line theory},
  language     = {eng},
  number       = {11},
  pages        = {3568--3578},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Microwave Theory and Techniques},
  title        = {Estimation of Nonhomogeneous and Multi-Section Twisted-Pair Transmission-Line Parameters},
  url          = {http://dx.doi.org/10.1109/TMTT.2015.2481386},
  volume       = {63},
  year         = {2015},
}