Disclosed is a method for increasing a data transfer rate without an increase in the whole bandwidth using intrinsic spreading codes and orthogonal codes. The gas turbine engine comprises a core engine having a core engine casing. Electrodes are used alternately as sensors and as actuators, and the electrodes detect and transmit values to a downstream data detection unit. The plurality of isolation circuits may be configured to receive the control signals from the plurality of control circuits and a plurality of isolation signals.