Title:
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
Document Type and Number:
Japanese Patent JP2021110553
Kind Code:
A
Abstract:
To generate a signal which simulates frequency characteristics by a tap number less than a tap number required in a transmission standard.SOLUTION: A signal generation device comprises: tap value setting means 2 for setting a tap value of each tap to be obtained in a transmission standard; inverse Fourier transformation means 3 for performing inverse Fourier transformation from an array number including the set tap value so as to calculate frequency characteristics; loss value correction means 4 for correcting a loss value of the calculated frequency characteristics with the use of a loss value correction curve; frequency characteristic file generation means 5 for generating a frequency characteristic file which is obtained by connecting two points i.e. a DC level of frequency characteristics of a tap number to be obtained in a transmission standard and a loss value in a Nyquist frequency with a straight line; impulse response segmentation means 7 for segmenting the tap number of a FIR filter 11 from an impulse response to be obtained by performing Fourier transformation of the generated frequency characteristic file; tap value correction means 8 for correcting a tap value of each segmented tap; and means for setting the corrected tap value of each tap to each tap of the FIR filter 11.SELECTED DRAWING: Figure 1
Inventors:
IWAI TATSUYA
ONUMA HIROKI
ONUMA HIROKI
Application Number:
JP2020000415A
Publication Date:
August 02, 2021
Filing Date:
January 06, 2020
Export Citation:
Assignee:
ANRITSU CORP
International Classes:
G01R31/3183; H03H17/02; H03H17/06; H04B3/46
Domestic Patent References:
| JP2019216390A | 2019-12-19 | |||
| JP2019004421A | 2019-01-10 | |||
| JP6625169B1 | 2019-12-25 |
Attorney, Agent or Firm:
Norimitsu Nishimura
Noriyuki Suzuki
Noriyuki Suzuki