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Self-synchronizing a DMT-based VDSL system
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0003-0413-4826
Luleå tekniska universitet.
Luleå tekniska universitet.
Stanford University.
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2001 (English)In: Where minds meet: 2001 IEEE International Conference on Communications ; ICC 2001. June 11 - 14, 2001 ; Helsinki ; conference record / IEEE Communications Society / [ed] Yrjö Neuvo, Piscataway, NJ: IEEE Communications Society, 2001, p. 1249-1253Conference paper, Published paper (Refereed)
Abstract [en]

We present an algorithm for self-synchronizing all modems in a discrete multitone (DMT)-based very high-speed digital subscriber line (VDSL) system using the Zipper duplex method. This solves the problem with non-orthogonal near-end crosstalk (NEXT) that appears in systems with unsynchronized modems. The algorithm we present runs autonomously in each VDSL-modem. It uses the auto-correlation of the DMT-signal to determine the frame-offset of other users, and adjusts the own frame-timing to be better aligned with the other users. With our method all modems will be self-synchronized to within a small fraction of the total DMT frame-length. This self-synchronization suppresses the NEXT to a level far below the background noise-floor. This means that our self-synchronized system has the same performance as a system where all modems are perfectly synchronized to a master clock

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2001. p. 1249-1253
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-32965DOI: 10.1109/ICC.2001.936892Scopus ID: 2-s2.0-0034858295Local ID: 7a8a4590-315b-11dd-9729-000ea68e967bOAI: oai:DiVA.org:ltu-32965DiVA, id: diva2:1006200
Conference
IEEE International Conference on Communications : 11/06/2001 - 14/06/2001
Note

Godkänd; 2001; 20080603 (cira)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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  • apa
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  • de-DE
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