US 12,470,257 B2
Doppler shift compensation apparatus and doppler shift compensation method
Kazumitsu Sakamoto, Musashino (JP); Yosuke Fujino, Musashino (JP); Daisuke Goto, Musashino (JP); Yasuyoshi Kojima, Musashino (JP); and Kiyohiko Itokawa, Musashino (JP)
Assigned to NTT, Inc., Tokyo (JP)
Appl. No. 18/039,073
Filed by NTT, Inc., Tokyo (JP)
PCT Filed Dec. 2, 2020, PCT No. PCT/JP2020/044904
§ 371(c)(1), (2) Date May 26, 2023,
PCT Pub. No. WO2022/118406, PCT Pub. Date Jun. 9, 2022.
Prior Publication US 2024/0214033 A1, Jun. 27, 2024
Int. Cl. H04W 24/02 (2009.01); H04B 7/01 (2006.01); H04B 7/185 (2006.01)
CPC H04B 7/01 (2013.01) [H04B 7/18513 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A Doppler shift compensation device comprising:
one or more processors configured to perform as:
a signal acquisition unit that acquires a reception signal received by a reception device from a transmission device that moves relative to the reception device;
a compensation unit that compensates for a Doppler shift of the reception signal based on a possibility of a change amount of the Doppler shift; and
a change unit that changes a value of the possibility of the change amount of the Doppler shift in a case where a bandwidth is larger than a predetermined value, the bandwidth having power equal to or greater than a predetermined threshold in frequency components of the reception signal after compensation.