Near-end crosstalk cancellation in xDSL systems

Author

Nongpiur, R.C. ; Shpak, D.J. ; Antoniou, A.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

1

fYear

2002

fDate

3-6 Nov. 2002

Firstpage

393

Abstract

An algorithm for reducing the computational load in near-end crosstalk (NEXT) cancellation is proposed. The algorithm first detects the major NEXT sources by taking the cross correlation of the adjacent transmitted signals with the received signal. A fast method for estimating the cross correlation is utilized to speed up the detection process. Upon detection, an adaptive filter cancels each NEXT source. The detection and cancellation are done simultaneously as the algorithm progresses. This helps the smaller NEXT signals to be detected as the larger NEXT signals are cancelled out.

Keywords

adaptive filters; adaptive signal detection; correlation methods; crosstalk; digital subscriber lines; interference suppression; NEXT cancellation; adaptive filter; adjacent transmitted signals; crosscorrelation; filter coefficient; major NEXT sources; near end crosstalk cancellation; threshold value; twisted pair; xDSL system; Adaptive filters; Additive noise; Copper; Crosstalk; DSL; Echo cancellers; Frequency; Signal detection; Signal processing; Web and internet services;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7576-9

Type

conf

DOI

10.1109/ACSSC.2002.1197213

Filename

1197213