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Asynchronous Zipper [subscriber line duplex method]

Sjöberg, F.; Nilsson, R.; Ödling, Per LU and Börjesson, Per Ola LU (1999) In IEEE International Conference on Communications 1. p.231-235
Abstract
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... (More)
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 (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
IEEE International Conference on Communications
volume
1
pages
231 - 235
external identifiers
  • Scopus:33646818230
ISBN
0-7803-5284-X
DOI
10.1109/ICC.1999.767928
language
English
LU publication?
yes
id
a657af96-a2d3-4fae-b655-b704339c7270 (old id 1056913)
date added to LUP
2008-04-11 12:09:46
date last changed
2016-10-13 04:51:42
@misc{a657af96-a2d3-4fae-b655-b704339c7270,
  abstract     = {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},
  author       = {Sjöberg, F. and Nilsson, R. and Ödling, Per and Börjesson, Per Ola},
  isbn         = {0-7803-5284-X},
  language     = {eng},
  pages        = {231--235},
  series       = {IEEE International Conference on Communications},
  title        = {Asynchronous Zipper [subscriber line duplex method]},
  url          = {http://dx.doi.org/10.1109/ICC.1999.767928},
  volume       = {1},
  year         = {1999},
}