An impact of adjacent ADSL signals on capacity of copper twisted pair channel

This paper analyses qualitative and quantitative impact of large number twisted pairs transmitting ADSL signal, on one specific pair in the same cable. Change of pair capability to establish ADSL signal in respect to number of near active ADSL signals is observed. Information capacity is chosen as parameter of observed pair quality. At the beginning of this paper, simplified mathematical model of treated case is presented. After that, one pair during exploitation is analysed.