The present invention provides a method for reducing phase noise in OFDM systems by analyzing a time-dependent representation of the phase noise that changes in real time according to received data. The apparatus may be made up of a transducer, a baroreflex activation device having one or more electrodes, and a lead having two or more conductors. The solution keeps a strong drive and a good performance of the PA. The local electrical isolation may be positioned with the device such that at least one of the local electrical isolation is located between a high voltage terminal and a low voltage terminal of the device.