Title:
WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/029015
Kind Code:
A1
Abstract:
A plurality of transmission antennas of a wireless transmission device and a plurality of reception antennas of a wireless reception device are positioned in the sea in a line-of-sight environment, and the wireless transmission device selects a frequency channel to be used on the basis of: the angle indicating the distance between the transmission antennas and the reception antennas and the arrival direction of the wireless signal; the interval of the plurality of transmission antennas; the interval of the plurality of reception antennas; an index value for each frequency channel indicating the orthogonality between the transmission antennas and the reception antennas set on the basis of a modulation method; the angle estimated by the wireless reception device indicating the distance between the transmission antennas and reception antennas and the arrival direction of the wireless signal; and a preset desired bit error rate, and the wireless transmission device further selects a modulation method for the maximum transmission capacity for each selected frequency channel, separates the transmission data into the number of the plurality of frequency channels, modulates each of the separated transmission data using the selected modulation method, and outputs a transmission signal that is multiplexed into a multiple number indicating the number of transmission antennas used.
Inventors:
NAKANO MARINA (JP)
FUJINO YOSUKE (JP)
FUKUMOTO HIROYUKI (JP)
AKABANE KAZUNORI (JP)
FUJINO YOSUKE (JP)
FUKUMOTO HIROYUKI (JP)
AKABANE KAZUNORI (JP)
Application Number:
PCT/JP2019/031861
Publication Date:
February 18, 2021
Filing Date:
August 13, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B7/0413
Domestic Patent References:
| WO2008053550A1 | 2008-05-08 | |||
| WO2007058270A1 | 2007-05-24 |
Foreign References:
| JP2014132726A | 2014-07-17 | |||
| JP2018137722A | 2018-08-30 | |||
| JP2007166459A | 2007-06-28 | |||
| JP2011166319A | 2011-08-25 | |||
| US20090257487A1 | 2009-10-15 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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