US 12,456,994 B2
Signal processing device, signal processing method, and non-transitory computer readable medium
Takuji Mochizuki, Tokyo (JP); and Kazuhiro Ishida, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 18/268,381
Filed by NEC Corporation, Tokyo (JP)
PCT Filed May 25, 2021, PCT No. PCT/JP2021/019815
§ 371(c)(1), (2) Date Jun. 20, 2023,
PCT Pub. No. WO2022/137593, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-217508 (JP), filed on Dec. 25, 2020.
Prior Publication US 2024/0072832 A1, Feb. 29, 2024
Int. Cl. H04B 1/04 (2006.01)
CPC H04B 1/0475 (2013.01) [H04B 2001/0408 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A signal processing device comprising:
a distortion compensation circuit configured to execute distortion compensation processing of compensating for nonlinear distortion on an input signal, and output a signal subjected to the distortion compensation processing;
an amplifier configured to amplify the signal output from the distortion compensation circuit and output the amplified signal as a communication signal for communication; and
a signal output circuit configured to output an adjustment signal for adjusting the distortion compensation processing to the distortion compensation circuit as the input signal at a timing at which the communication signal is not output, the adjustment signal having a frequency band that covers a frequency band of the communication signal.