Compensation of crosstalk in the parallel operation of G.fast systems over TPP type multi-bundle telephone cables

In this paper the mathematical models of the "vectoring" crosstalk compensation system for TPP type multibundle telephone cables are developed. The simplified calculation formulas for the total power of the far end crosstalk and the crosstalk suppression by "vectoring" system in the parallel operation of the transmission systems over the TPP type multibundle cables are defined. Power spectral density level of the crosstalk at the receiver's input of the transmission systems on G.fast technology without "vectoring" system application and with "vectoring" system application is estimated depending on the signal frequency and the line length when TPP-50×2×0,4 and TPP-100×2×0,4 cables are using. The efficiency of the "vectoring" crosstalk compensation system application over TPP type multibundle telephone cables is estimated by the crosstalk suppression value in the frequency range up to 106 MHz and line length range up to 500 meters.