Title:
RECEPTION METHOD, SYNCHRONIZATION DEVICE, AND RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/170970
Kind Code:
A1
Abstract:
This synchronization device includes a detection unit, a calculation unit, a correction unit, a Doppler estimation unit, and a compensation unit. The detection unit detects the position of a first sequence and the position of a second sequence in a received signal of each of a plurality of channels as received by a plurality of reception units. On the basis of these detected positions, the calculation unit calculates the time required to receive a prescribed portion of the received signal of each channel. The correction unit performs a correction process for correcting outliers among the positions of the first sequences for the channels and/or outliers among the times calculated for the channels. The Doppler estimation unit estimates a Doppler shift for each channel using the time after the correction process. For each channel, the compensation unit applies compensation to the received signal using the Doppler shift, and outputs, to an equalizer, the resulting received signal, which has been delimited on the basis of the position of the first sequence after the correction process.
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Inventors:
FUKUMOTO HIROYUKI (JP)
FUJINO YOSUKE (JP)
OMORI SEIJI (JP)
ITO YUYA (JP)
OIWA MIHARU (JP)
OKUMURA RYOTA (JP)
FUJINO YOSUKE (JP)
OMORI SEIJI (JP)
ITO YUYA (JP)
OIWA MIHARU (JP)
OKUMURA RYOTA (JP)
Application Number:
PCT/JP2022/011108
Publication Date:
September 14, 2023
Filing Date:
March 11, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B11/00
Foreign References:
| US6512720B1 | 2003-01-28 |
Other References:
FUKUMOTO HIROYUKI; FUJINO YOSUKE; NAKANO MARINA; SAKAMOTO KAZUMITSU; TSUBAKI TOSHIMITSU: "Field Experiments Demonstrating Mbps-Class Underwater Acoustic Communication with Spatio-Temporal Equalization", GLOBAL OCEANS 2020: SINGAPORE – U.S. GULF COAST, IEEE, 5 October 2020 (2020-10-05), pages 1 - 6, XP033896185, DOI: 10.1109/IEEECONF38699.2020.9389018
SHARIF B.S., NEASHAM J., HINTON O.R., ADAMS A.E.: "Doppler compensation for underwater acoustic communications", OCEANS '99 MTS/IEEE. RIDING THE CREST INTO THE 21ST CENTURY SEATTLE, WA, USA 13-16 SEPT. 1999, PISCATAWAY, NJ, USA & WASHINGTON, DC, US, US, vol. 1, 13 September 1999 (1999-09-13) - 16 September 1999 (1999-09-16), US , pages 216 - 221, XP010354745, ISBN: 978-0-7803-5628-3, DOI: 10.1109/OCEANS.1999.799734
SHARIF B.S., NEASHAM J., HINTON O.R., ADAMS A.E.: "Doppler compensation for underwater acoustic communications", OCEANS '99 MTS/IEEE. RIDING THE CREST INTO THE 21ST CENTURY SEATTLE, WA, USA 13-16 SEPT. 1999, PISCATAWAY, NJ, USA & WASHINGTON, DC, US, US, vol. 1, 13 September 1999 (1999-09-13) - 16 September 1999 (1999-09-16), US , pages 216 - 221, XP010354745, ISBN: 978-0-7803-5628-3, DOI: 10.1109/OCEANS.1999.799734
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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