Publication
Title
Waterfilled VDSL echo limitation for rate-reach performance improvement
Author
Abstract
Digital Subscriber Line (DSL) deployment is evolving to ever higher bit rates resulting in the use of broader spectra. The DSL flavor using the broadest spectrum today is known as VDSL. The reach performance of VDSL is upstream limited as the upstream bands use the highest frequencies. These high frequencies experience more channel attenuation, resulting In smaller Signal-to-Noise Ratio (SNR) values. In this paper, a way of increasing the upstream reach performance is described. After investigating the VDSL transceiver, the reach performance of a VDSL modem is identified to be dominated by the echo power. Therefore, limiting the downstream echo yields a better upstream receive signal. This results in trading off downstream bit rate for more upstream bit rate. The way to optimally limit the echo is derived and high performance gains can be achieved. Finally, the optimal solution is approximated with a near-optimal solution with considerably less complexity. The near-optimal solution performs very well compared to the optimal solution.
Language
English
Source (journal)
IEEE International Conference on Communications : [proceedings]. - Piscataway, NJ, 2003, currens
Source (book)
IEEE International Conference on Communications (ICC 2005), MAY 16-20, 2005, Seoul, SOUTH KOREA
Publication
Piscataway, NJ : IEEE, 2005
ISBN
0-7803-8938-7
Volume/pages
(2005), p. 1932-1936
ISI
000231726402097
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 11.08.2017
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