A method for reducing the interfering influences of pulse-shaped interference signals in OFDM-based data transmission, comprising the step of - multiplying a transmission signal comprising a multi-carrier frequency signal including modulated data allocated to individual carrier frequencies, by a window function for blanking out a pulse-shaped interference signal in the transmission signal, - wherein the window function - when seen in the temporal range as a continuous function - is differentiable, - wherein, after transmission channel estimation and signal distortion correction, the transmission signal multiplied by the window function is decoded, wherein, in said transmission channel estimation, the data respectively allocated to the individual carrier frequencies get allocated to them a reliability value describing how reliable the received and respectively estimated data are, and - wherein the reliability value for those data that have been allocated to the carrier frequencies affected by a pulse-shaped interference signal is, prior to said decoding, each time set to zero, characterized in - that the window function is realized from a rectangular window function which in the time domain has the width T 0 and in the frequency domain is defined by a spectrum having a center frequency and spectral coefficients, namely - either by filtering the spectrum by means of a filter having a bandwidth 8 or 16 times as large as 1/T 0, - or by reducing the spectrum to the largest spectral coefficients with respect to the K-value, or to those K spectral coefficients whose appertaining frequencies are closest to the center frequency of the spectrum, wherein the parameter K is selected to be 8 or 16, - so that a widening of the interference signal in the frequency range and a resultant increase of the number of symbols affected by the interference are avoided. - multiplying a transmission signal comprising a multi-carrier frequency signal including modulated data allocated to individual carrier frequencies, by a window function for blanking out a pulse-shaped interference signal in the transmission signal, - wherein the window function - when seen in the temporal range as a continuous function - is differentiable, - wherein, after transmission channel estimation and signal distortion correction, the transmission signal multiplied by the window function is decoded, wherein, in said transmission channel estimation, the data respectively allocated to the individual carrier frequencies get allocated to them a reliability value describing how reliable the received and respectively estimated data are, and - wherein the reliability value for those data that have been allocated to the carrier frequencies affected by a pulse-shaped interference signal is, prior to said decoding, each time set to zero, - that the window function is realized from a rectangular window function which in the time domain has the width T 0 and in the frequency domain is defined by a spectrum having a center frequency and spectral coefficients, namely - either by filtering the spectrum by means of a filter having a bandwidth 8 or 16 times as large as 1/T 0, - or by reducing the spectrum to the largest spectral coefficients with respect to the K-value, or to those K spectral coefficients whose appertaining frequencies are closest to the center frequency of the spectrum, wherein the parameter K is selected to be 8 or 16, - so that a widening of the interference signal in the frequency range and a resultant increase of the number of symbols affected by the interference are avoided. - either by filtering the spectrum by means of a filter having a bandwidth 8 or 16 times as large as 1/T 0, - or by reducing the spectrum to the largest spectral coefficients with respect to the K-value, or to those K spectral coefficients whose appertaining frequencies are closest to the center frequency of the spectrum, wherein the parameter K is selected to be 8 or 16, - so that a widening of the interference signal in the frequency range and a resultant increase of the number of symbols affected by the interference are avoided.