US 12,445,195 B2
Doppler shift compensation apparatus and doppler shift compensation method
Kazumitsu Sakamoto, Musashino (JP); Yosuke Fujino, Musashino (JP); Tomoya Kageyama, Musashino (JP); Daisuke Goto, Musashino (JP); Yasuyoshi Kojima, Musashino (JP); and Kiyohiko Itokawa, Musashino (JP)
Assigned to NTT, Inc., Tokyo (JP)
Appl. No. 18/037,511
Filed by NTT, Inc., Tokyo (JP)
PCT Filed Dec. 2, 2020, PCT No. PCT/JP2020/044896
§ 371(c)(1), (2) Date May 17, 2023,
PCT Pub. No. WO2022/118405, PCT Pub. Date Jun. 9, 2022.
Prior Publication US 2023/0412261 A1, Dec. 21, 2023
Int. Cl. H04B 7/185 (2006.01)
CPC H04B 7/1855 (2013.01) 7 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 bandwidth specifying unit that specifies a reception bandwidth that is a bandwidth of the reception signal;
a shift specifying unit that specifies a change amount of a Doppler shift per time based on a difference between a bandwidth of a transmission signal in the transmission device and the reception bandwidth; and
a compensation unit that compensates for the Doppler shift of the reception signal based on the change amount specified.