MULTITONE SIGNAL DETECTION DEVICE, MULTITONE SIGNAL DETECTION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To detect a multitone signal whose transmission frequency is unknown.;SOLUTION: A multitone signal detection device includes a communication signal processing unit 102 that obtains a signal spectrum of a received signal, obtains a converted signal spectrum obtained by subjecting the signal spectrum to Fourier transform, and outputs a first processed signal according to the converted signal spectrum, a teacher signal processing unit 103 that generates a teacher spectrum according to the number of tones of the multitone signal to be detected and the tone-to-tone frequency and outputs a second processed signal corresponding to the converted teacher spectrum obtained by subjecting the teacher spectrum to Fourier transform, and a signal detection unit 104 that detects a multi-tone signal to be detected based on a correlation value between the first processed signal and the second processed signal.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT