水中音響通信システム及び受信装置 - Nippon Telegraph and Telephone Corporation

Title:

水中音響通信システム及び受信装置

Document Type and Number:

Japanese Patent JP7168849

Kind Code:

B2

Abstract:

An underwater acoustic communication system includes a transmission device including N transmitters, and a reception device. The reception device includes M (M is an integer of two or more) receivers configured to receive M reception signal sequences corresponding to N transmission signal sequences transmitted from the N transmitters through sound waves, a beam former configured to suppress multipath waves other than direct waves of the M received reception signal sequences and to generate L (L is an integer of two or more) signal sequences from the M reception signal sequences, and a signal estimation unit configured to estimate the N transmission signal sequences based on the L generated signal sequences.

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Inventors:

Yosuke Fujino
Hiroyuki Fukumoto
Marina Nakano
Kazunori Akabane

Application Number:

JP2018219638A

Publication Date:

November 10, 2022

Filing Date:

November 22, 2018

Export Citation:

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Assignee:

Nippon Telegraph and Telephone Corporation

International Classes:

H04B7/0413; H04B7/0456; H04B11/00

Domestic Patent References:

JP8331065A

Foreign References:

WO2009017230A1

Other References:

志村拓也他,水中音響通信における位相共役を用いたMIMO通信、マルチユーザ通信の研究,日本音響学会 2017年春季研究発表会講演論文集,2017年03月,pp.1317-1318

Attorney, Agent or Firm:

Patent Attorney Shiga International Patent Office

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