Revised Upstream Power Back-Off For VDSL

Author

Statovci, Driton ; Nordström, Tomas ; Nilsson, Rickard ; Oksman, Vladimir

Author_Institution

Telecommun. Res. Center Vienna

Volume

4

fYear

2006

fDate

14-19 May 2006

Abstract

Accurate upstream power back-off (PBO) parameters are needed by operators deploying very high-speed digital subscriber line (VDSL) modems. Although a standardized PBO method for VDSL exist, the standard gives little or no guidance to an operator how to establish these optimized PBO parameters for its particular network and customers. In this paper, we present an efficient algorithm based on the Nelder-Mead simplex search which calculates optimized upstream PBO parameters. To make the PBO parameter calculation independent of the network scenario we present a new method for establishing worst-case far-end crosstalk (FEXT) noise, which is based on virtual modems

Keywords

crosstalk; digital subscriber lines; Nelder-Mead simplex search; VDSL; far-end crosstalk; upstream power back-off; very high-speed digital subscriber line; Background noise; Central office; Crosstalk; DSL; Frequency conversion; Modems; Noise robustness; North America; Optimization methods; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1661048

Filename

1661048