Title:
UNDERWATER ACOUSTIC MIMO COMMUNICATION SYSTEM USING PARAMETRIC METHOD
Document Type and Number:
Japanese Patent JP2019080227
Kind Code:
A
Abstract:
To provide an underwater acoustic MIMO communication system using a parametric method that can improve the communication quality and reliability of acoustic communication in water (under water, etc.) by applying the parametric method and the MIMO communication technology in a compatible manner.SOLUTION: An underwater acoustic MIMO communication system 10 using a parametric method includes a plurality of parametric transmitters 12, a transmitting circuit 14 that transmits, as a primary wave, a signal of frequency fobtained by ASK modulating a baseband signal to be transmitted as a modulation wave and a signal of a frequency fas a carrier wave, multiple parametric receivers 16 that can receive a difference (f-f) and a chord (f+f) between the frequency of the transmitted primary wave and the frequency of the primary wave which is a coupled wave generated by the primary wave as a secondary wave, and a receiver circuit 18 that converts the received primary wave and/or the secondary wave into a baseband signal.SELECTED DRAWING: Figure 1
Inventors:
IDOGUCHI YUSUKE
Application Number:
JP2017207077A
Publication Date:
May 23, 2019
Filing Date:
October 26, 2017
Export Citation:
Assignee:
IKEGAMI TSUSHINKI KK
International Classes:
H04B7/0413; H04B11/00
Domestic Patent References:
| JPS63208334A | 1988-08-29 | |||
| JP2007228175A | 2007-09-06 | |||
| JPH02253800A | 1990-10-12 | |||
| JP2005244445A | 2005-09-08 |
Foreign References:
| US20120008463A1 | 2012-01-12 | |||
| WO2008059985A1 | 2008-05-22 |
Attorney, Agent or Firm:
Kenichi Fujii