Patent ID: 9577705
Date: 2017-02-21
CPC Classifications: H04B

Claim:
1. A network apparatus with multiple communication ports, each of which is connected to multiple channels, assigned a seed for eliminating the interference among the communication ports, and operable in either a master mode or a slave mode, each of the channels having a communication unit which comprises: an echo canceller being a first filter with multiple taps corresponding to multiple first coefficients so as to eliminate the interference of an echo signal from the channel itself; a near-end crosstalk (NEXT) canceller being a second filter with multiple taps corresponding to multiple second coefficients so as to eliminate the interference of crosstalk noise from another channel of the communication port itself; a decision feedback equalizer being a third filter with multiple taps corresponding to multiple third coefficients so as to eliminate the inter-symbol interference due to the transmission of far-end signals; and a control unit configured for controlling the communication ports if the echo canceller keeps updating the first coefficients and the decision feedback equalizer keeps updating the third coefficients according to the same symbol during a first pre-determined time interval; wherein when more than two of the communication ports operate in the master mode, the control unit assigns different seeds to the more than two communication ports; and wherein when successive two of the communication ports operate in the slave mode, the control unit stops either the echo canceller from updating the first coefficients or the NEXT canceller from updating the second coefficients during a second pre-determined time interval.