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Asynchronous Zipper: [subscriber line duplex method]
Luleå tekniska universitet.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0003-0413-4826
Telia Research AB, Aurorum 6.
Lund Institute of Technology, Department of Applied Electronics.
Show others and affiliations
1999 (English)In: IEEE International Conference on Communications: 6 - 10 June, 1999, Vancouver, British Columbia, Canada, Piscataway, Nj: IEEE Communications Society, 1999, Vol. 1, p. 231-235Conference paper, Published paper (Refereed)
Abstract [en]

Previously the authors presented a novel duplex method for very high bit-rate digital subscriber lines (VDSL) called Zipper. With this method all VDSL-modems on different wires in the same bindergroup have to be time-synchronized to avoid near-end cross-talk (NEXT). We describe a method which enables Zipper to run in a time-asynchronous mode. By introducing pulse-shaping in the transmitter and windowing in the receiver the NEXT is almost completely suppressed even though the synchronization between modems on neighboring lines is skipped. The remaining NEXT and efficiency loss due to pulse-shaping and windowing results in only a small bit-rate performance loss, typically less than 10% compared to the time-synchronized Zipper. However, with the new freedom of optimizing the lengths of the cyclic suffices with asynchronous Zipper, there may even be a small improvement in bit-rate performance for short wires

Place, publisher, year, edition, pages
Piscataway, Nj: IEEE Communications Society, 1999. Vol. 1, p. 231-235
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-27922DOI: 10.1109/ICC.1999.767928Local ID: 18295100-e126-11dc-9e29-000ea68e967bISBN: 0-7803-5284-X (print)OAI: oai:DiVA.org:ltu-27922DiVA, id: diva2:1001113
Conference
IEEE International Conference on Communications : 06/06/1999 - 10/06/1999
Note

Godkänd; 1999; 20080222 (ysko)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-02-06Bibliographically approved

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