Patent ID: 11881906
Assignee: FUJITSU LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The apparatus according to claim 6, wherein,
when the notch operation is performed by using the frequency-domain power reduction method, the process is to:
perform fast Fourier transform (FFT) on the input signal to transform the input signal to frequency domain, multiply a frequency-domain transformed signal by a band-stop filter, and perform inverse fast Fourier transform (IFFT) on a signal output from the band-stop filter to transform the output signal to time domain to obtain the signal after the notch operation; and

when the notch operation is performed by using the time-domain convolution band-stop filter method, the process is to:
pass the input signal through a convolution band-stop filter to obtain the signal after the notch operation.