Title:
WIRELESS COMMUNICATION SYSTEM, RECEPTION DEVICE, AND ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/248379
Kind Code:
A1
Abstract:
This reception device comprises a Doppler shift estimation unit that receives waveform data transmitted by a wireless communication device and estimates a Doppler shift and a frequency offset affecting a reception signal indicated by the waveform data, the Doppler shift estimation unit being provided with: M first computation units (where M is an integer equal to or greater than 2) that divides the reception signal and multiplies each of M types of frequency offset correction coefficient candidates by the divided reception signals; M×N second computation units (where N is an integer equal to or greater than 2) that multiply N types of Doppler shift correction coefficient candidates by each output signal from the M first computation units; and a comparison unit that estimates, as a frequency offset estimation value and a Doppler shift estimation value used in compensation of the reception signal, the frequency offset correction coefficient candidate and Doppler shift correction coefficient candidate that are multiplied by any output signal from among output signals outputted from each of the M×N second computation units.
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Inventors:
KAGEYAMA TOMOYA (JP)
SAKAMOTO KAZUMITSU (JP)
FUJINO YOSUKE (JP)
SAKAMOTO KAZUMITSU (JP)
FUJINO YOSUKE (JP)
Application Number:
PCT/JP2022/024881
Publication Date:
December 28, 2023
Filing Date:
June 22, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04W84/06; H04B7/185
Domestic Patent References:
| WO2021234864A1 | 2021-11-25 | |||
| WO2021240583A1 | 2021-12-02 | |||
| WO2021245908A1 | 2021-12-09 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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