Concept for realistic simulation of a frequency spectrum

A method for generating a signal composed of a plurality of individual signals, comprising:

• by a computing device, providing the plurality of individual signals in the time domain;
• by the computing device, transforming the individual signals from the time domain to the frequency domain each by a discrete Fourier transformation with a first length;
• by the computing device, processing the individual signals transformed to the frequency domain each depending on a signal channel existing between the simulation location and the respective signal location;
• by the computing device, combining the processed individual signals transformed to the frequency domain to a combined signal, wherein during combining a bandwidth of the respective frequency domain of the discrete Fourier transformation is extended to an output frequency domain;
• and
• by the computing device, transforming the combined signal from the output frequency domain to the time domain by an inverse discrete Fourier transformation IFFT with a second length for acquiring the simulated combined signal, wherein the second length of the inverse discrete Fourier transformation is greater than the first length of the respective discrete Fourier transformation due to the extended output frequency domain.

Non-transitory computer-readable medium having stored thereon a program code for performing the method for generating a signal composed of a plurality of individual signals, the method comprising:

• providing the plurality of individual signals in the time domain;
• transforming the individual signals from the time domain to the frequency domain each by a discrete Fourier transformation with a first length;
• processing the individual signals transformed to the frequency domain each depending on a signal channel existing between the simulation location and the respective signal location;
• combining the processed individual signals transformed to the frequency domain to a combined signal, wherein during combining a bandwidth of the respective frequency domain of the discrete Fourier transformation is extended to an output frequency domain;
• and
• transforming the combined signal from the output frequency domain to the time domain by an inverse discrete Fourier transformation IFFT with a second length for acquiring the simulated combined signal, wherein the second length of the inverse discrete Fourier transformation is greater than the first length of the respective discrete Fourier transformation due to the extended output frequency domain,
• when the computer program runs on a computer.