Detection and localization of load coils from one-port measurements
(2010) In IEEE Transactions on Instrumentation and Measurement 59(7). p.1972-1982- Abstract
- Abstract in Undetermined
This paper deals with detection and localization of load coils in the copper access network. The load coil is a legacy device that must be removed before deploying broadband services on twisted-pair transmission lines. The proposed methods do not require dedicated hardware but utilize the already installed transceivers for one-port measurements of the line input impedance. The number of load coils is detected by counting the number of resonance peaks in the line impedance spectrum. An approximative model of the symmetric loaded line is presented, from which a low-complexity load coil locator is derived. For nonsymmetric lines, a load coil locator using model-based optimization is proposed. The two methods are... (More) - Abstract in Undetermined
This paper deals with detection and localization of load coils in the copper access network. The load coil is a legacy device that must be removed before deploying broadband services on twisted-pair transmission lines. The proposed methods do not require dedicated hardware but utilize the already installed transceivers for one-port measurements of the line input impedance. The number of load coils is detected by counting the number of resonance peaks in the line impedance spectrum. An approximative model of the symmetric loaded line is presented, from which a low-complexity load coil locator is derived. For nonsymmetric lines, a load coil locator using model-based optimization is proposed. The two methods are compared and evaluated by computer simulations and by laboratory measurements on real transmission lines. The estimation results indicate that up to five load coils can be robustly detected and located with the proposed methods. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1414737
- author
- Lindqvist, Fredrik LU and Fertner, Antoni
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cable modeling, detection, digital subscriber line (DSL), load coil, one-port measurement, single-ended line testing (SELT)
- in
- IEEE Transactions on Instrumentation and Measurement
- volume
- 59
- issue
- 7
- pages
- 1972 - 1982
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000281764200026
- scopus:77953286472
- ISSN
- 0018-9456
- DOI
- 10.1109/TIM.2009.2028220
- language
- English
- LU publication?
- yes
- id
- 3c1cbaab-25f0-4ad9-8f42-4bd8e05c59f7 (old id 1414737)
- date added to LUP
- 2016-04-01 14:37:33
- date last changed
- 2022-01-28 01:41:28
@article{3c1cbaab-25f0-4ad9-8f42-4bd8e05c59f7,
abstract = {{Abstract in Undetermined<br/>This paper deals with detection and localization of load coils in the copper access network. The load coil is a legacy device that must be removed before deploying broadband services on twisted-pair transmission lines. The proposed methods do not require dedicated hardware but utilize the already installed transceivers for one-port measurements of the line input impedance. The number of load coils is detected by counting the number of resonance peaks in the line impedance spectrum. An approximative model of the symmetric loaded line is presented, from which a low-complexity load coil locator is derived. For nonsymmetric lines, a load coil locator using model-based optimization is proposed. The two methods are compared and evaluated by computer simulations and by laboratory measurements on real transmission lines. The estimation results indicate that up to five load coils can be robustly detected and located with the proposed methods.}},
author = {{Lindqvist, Fredrik and Fertner, Antoni}},
issn = {{0018-9456}},
keywords = {{Cable modeling; detection; digital subscriber line (DSL); load coil; one-port measurement; single-ended line testing (SELT)}},
language = {{eng}},
number = {{7}},
pages = {{1972--1982}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Transactions on Instrumentation and Measurement}},
title = {{Detection and localization of load coils from one-port measurements}},
url = {{http://dx.doi.org/10.1109/TIM.2009.2028220}},
doi = {{10.1109/TIM.2009.2028220}},
volume = {{59}},
year = {{2010}},
}