Vorverzerrung für eine nichtlineare Übertragungsstrecke im Hochfrequenzbereich

摘要

The invention relates to a circuit (10) for pre-distortion of a signal to be transmitted via a non-linear transmission path (18). Said circuit has an envelope detection circuit (24) for detecting the signal (v). A quantisation circuit (22) for forming quantised envelope values on the basis of the envelope detected is connected to the envelope detection circuit (24) and to a chart (16) for delivering complex pre-distortion coefficients which are related to the quantised envelope values and a pre-detected transmission function of the non-linear transmission path (18). An evaluation circuit (14) which is separated from the non-linear transmission path (18) and is meant to carry out complex evaluation, using the complex pre-distortion coefficients, of the signal to be transmitted via the non-linear transmission path (18) enables substantial compensation for the distortion introduced by the non-linear transmission path (18), according to the amount and phase.