Title :
Upstream power back-off in VDSL
Author :
Schelstraete, Sigurd
Author_Institution :
Alcatel BELL, Antwerp, Belgium
Abstract :
VDSL upstream data transmission in a distributed environment will suffer from relatively strong FEXT (far-end crosstalk) generated by the shortest lines in the topology. This can drastically reduce the upstream capacity on longer lines. To remedy this problem, a systematic reduction of the transmit power on shorter lines has to be applied. This principle is known as power back-off. This paper shows how power back-off can be formulated and how an optimal solution can be found
Keywords :
crosstalk; data communication; digital subscriber lines; electromagnetic interference; network topology; power control; VDSL; far-end crosstalk; optimal reference PSD; upstream capacity; upstream power back-off; Crosstalk; Frequency; Modems; Read only memory; Shape; Topology; Transmitters; Working environment noise;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965147
