A study of far-end crosstalk cancellation architecture for 10GBASE-T

In traditional fast Ethernet systems, such as 1000BASE-T, far-end crosstalk (FEXT) interferences are treated as noises, and can usually be tolerated. In 10GBASE-T system, the FEXT must be canceled by at least about 20 dB in order to achieve the required decision point signal-to-noise ratio (DP-SNR) of 23.4 dB. This paper not only proposes a power limited transmitter-side-based FEXT cancellation method, but also compare the proposed scheme with other FEXT cancellation architecture. Our simulation results show that, by using the proposed method, the FEXT interferences are suppressed by about 28 dB and the transmitted power spectrum will not be affected.