A bipolar plate for use in a proton exchange membrane fuel cell having an electrically conductive polymer coated on at least one region of a surface of the plate in contact with a flow field. One is a compensation & amplification process for providing a receipt signal with a distortion compensating calculation and amplification before outputting the signal with phase and amplitude compensated. The method includes a step for receiving modulated data over a medium. The supplydischarge lines for the gaseous medium are connected to a central unit provided outside the container region.