Peak suppression circuit, peak suppression method and orthogonal frequency division multiplexing method modulator

摘要

In the tone reservation process, in order to maximize the PAPR suppression amount of the data signal sequence while suppressing the frequency component of the reserved tone to a specified value, a kernel signal sequence generated using reserved tones prepared in advance and , And a data signal sequence of orthogonal frequency division multiplexing system, performs tone reservation on the data signal train without suppressing according to the reserved tone to be updated, outputs a data signal train after peak suppression A data signal sequence after the peak suppression, and a frequency component of the reserved tone corresponding to the data signal train after the peak suppression are inputted, and the frequency component of the reserved tone generated from the frequency component exceeds a specified value Reduce the value obtained by applying inverse Fourier transform to the frequency data string suppressing the component from the data signal train after peak suppression To comprises a reserved tone suppression section for outputting a data signal sequence reserved tone is kept within the prescribed value.