Apparatus and method for reduction of common mode signal in wired data communication link

An apparatus for reduction of transmitter originated common mode signal in a wired data communication link, the common mode signal forming a source of electromagnetic radiation, the apparatus comprising:

• a digital front-end configured to generate a differential transmit signal based on transmit data, and pulse-shape the differential transmit signal by a pulse-shaping filter to obtain a pulse-shaped differential transmit signal, wherein the digital front-end comprises a compensation filter configured to filter the differential transmit signal in order to reduce a common mode signal distortion;
• an analog front-end configured to convert the pulse-shaped differential transmit signal into an analog signal representing the pulse-shaped differential transmit signal for transmission over the wired data communication link;
• a common mode signal detector configured to detect the common mode signal in the analog signal;
• and
• a filter coefficient determiner configured to determine filter coefficients of the compensation filter based on the detected common mode signal for common mode signal reduction, and provide the filter coefficients to the compensation filter.