| 摘要 |
<P>PROBLEM TO BE SOLVED: To estimate a modulation system exactly even an amount of operation is little. <P>SOLUTION: A modulation system estimating device includes a receiving means 101 which receives a modulated signal, a receiving means 102 which converts the modulated signal to a digital signal, a conversion means 103 which converts a digital signal to a wavelet signal, a selection means 104 which selects a signal composition whose degree of wavelet is in a some area among wavelet signals, an extraction means 105 which extracts an amount of characteristics corresponding to the area from the signal composition, and an identification means 106 which identifies whether the modulation signal is an analog modulation signal or not, corresponding to the characteristics of the amount of them. <P>COPYRIGHT: (C)2010,JPO&INPIT |
