High-rate DFT-based data manipulator and data manipulation method for high performance and robust signal processing

An apparatus for generating a reconstructed time-domain signal from an input time-domain signal is provided. The apparatus comprises a transformation unit (110), a manipulation unit (120), and a reconstruction unit (130). In a first clock cycle, the transformation unit (110) is configured to transform a first plurality of time-domain samples of the input time-domain signal or derived from the input time-domain signal from a time domain to a frequency domain to obtain a first plurality of frequency-domain samples of a frequency-domain signal. In a second clock cycle, the transformation unit (110) is configured to transform a second plurality of the time-domain samples of the input time-domain signal or derived from the input time-domain signal from the time domain to the frequency domain to obtain a second plurality of frequency-domain samples of the frequency-domain signal. The first plurality of time-domain samples and the second plurality of time-domain samples comprise one or more same time-domain samples of the input time-domain signal. The manipulation unit (120) is configured to manipulate one or more frequency-domain samples of the first plurality of frequency-domain samples to obtain a first plurality of manipulated frequency samples, and wherein manipulation stage is configured to manipulate one or more frequency-domain samples of the second plurality of frequency-domain samples to obtain a second plurality of manipulated frequency samples. The reconstruction unit (130) is configured to generate the reconstructed time-domain signal depending on the first plurality of manipulated frequency samples and depending on the second plurality of manipulated frequency samples.