THE ANALYSIS OF NEGATIVE INFLUENCES IN THE ENVIRONMENT OF HOMOGENEOUS SYMMETRIC LINES AT THE SIGNAL TRANSMISSION BY MEANS OF THE ADSL TECHNOLOGY

Rastislav Róka - Rastislav Cisár

   For successful understanding of the signal transmission on metallic homogeneous symmetric lines, it is necessary exactly to recognize essential negative influences in the real environment of local subscriber loops. This article discusses in detail frequency characteristics of linear negative influences on transmitted signal, near-end and far-end crosstalks and the impulse noise. Also, the analysis of these negative influences at the signal transmission is presented. The results of this analysis are based on the computer simulation of the ADSL transmission system.

Keywords: propagation loss, transmission function of the channel, transmission functions of the NEXT and FEXT crosstalks, model of the ADSL transmission system

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