Near-end crosstalk modelling in the digital subscriber loop

Author

Stacey, R.J. ; Hanrahan, H.E.

Author_Institution

Dept. of Electr. Eng., Univ. of the Witwatersrand, Johannesburg, South Africa

fYear

1992

fDate

9/11/1992 12:00:00 AM

Firstpage

139

Lastpage

144

Abstract

The importance of near-end crosstalk in digital subscriber loops is reviewed. Three statistical models are examined for predicting the mean and standard deviation of the NEXT interference power from n disturbers. The Bradley model is selected as most accurate with moderate computational complexity. A set of measurements on multipair cable to obtain model parameters is described. Crosstalk coupling on 26 gauge cable is found to vary with f^1.4, have a mean at 80 kHz equal to -93.7 dB and standard deviation of 11.5 dB. The distribution of the loss in dB across pairs of disturbers is Gaussian. The model is applicable when line codes are compared for the digital subscriber loop

Keywords

computational complexity; crosstalk; digital communication systems; statistical analysis; subscriber loops; Bradley model; NEXT interference power; computational complexity; coupling; digital subscriber loop; distribution; loss; multipair cable; near-end crosstalk; statistical models; Couplings; Crosstalk; DSL; Echo cancellers; Frequency; ISDN; Power cables; Predictive models; Subscriber loops; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing, 1992. COMSIG '92., Proceedings of the 1992 South African Symposium on

Conference_Location

Cape Town

Print_ISBN

0-7803-0807-7

Type

conf

DOI

10.1109/COMSIG.1992.274297

Filename

274297