数字用户环路中的近端串扰建模

Proceedings of the 1992 South African Symposium on Communications and Signal Processing Pub Date : 1992-09-11 DOI:10.1109/COMSIG.1992.274297

R. Stacey, H. Hanrahan

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引用次数: 1

摘要

综述了近端串扰在数字用户环路中的重要性。研究了三种统计模型，用于预测n个干扰源的NEXT干扰功率的均值和标准差。布拉德利模型是最准确的，计算复杂度适中。介绍了一套多对电缆模型参数的测量方法。发现26号电缆上的串扰耦合随f/sup 1.4/变化，在80 kHz时的平均值为-93.7 dB，标准差为11.5 dB。干扰器对间的损耗以dB为单位的分布是高斯分布。该模型适用于数字用户环路的线路码比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Near-end crosstalk modelling in the digital subscriber loop

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/sup 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.<>

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Proceedings of the 1992 South African Symposium on Communications and Signal Processing

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