Title:
無線通信装置及び無線通信方法
Document Type and Number:
Japanese Patent JP6646544
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To implement downsizing and cost reduction of a radio communication device.SOLUTION: Each sub array includes a first phase rotation unit for rotating a complex phase on an analog signal with respect to a reception signal by each antenna element constituting an array antenna. Each array antenna includes a changeover unit that allows all or part of reception signals output from the first phase rotation unit to pass when the reception signals are a reproduction target and allows a reception signal to pass one by one when the reception signal is a training signal. Each array antenna includes a signal synthesis unit for synthesizing reception signals allowed by and passing through a corresponding changeover unit, and a corresponding signal conversion unit converts a synthesized reception signal to a baseband digital signal. A signal reproduction unit reproduces a reception signal that is a reproduction target and is converted by a conversion unit. A correlation calculation unit, using training signals allowed by and passing through the changeover unit, calculates training signal correlation among antenna elements. A first phase rotation amount control unit, on the basis of a complex phase rotation amount calculated on the basis of the correlation, controls a rotation amount to be applied by the first phase rotation unit.SELECTED DRAWING: Figure 5
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Inventors:
Atsushi Ota
Hiroshi Shirato
Satoshi Kurosaki
Maruki Kazuki
Arai Takuto
Tatsuhiko Iwakuni
Masataka Iizuka
Hiroshi Shirato
Satoshi Kurosaki
Maruki Kazuki
Arai Takuto
Tatsuhiko Iwakuni
Masataka Iizuka
Application Number:
JP2016150838A
Publication Date:
February 14, 2020
Filing Date:
July 29, 2016
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04B7/10; H01Q3/24; H01Q3/36; H01Q21/06; H04B7/04
Domestic Patent References:
| JP2008312197A | ||||
| JP2004064743A | ||||
| JP2007266736A |
Other References:
太田 厚 他,時間軸ビームフォーミングを用いた列車ムービングセルへの無線バックホール構築技術,電子情報通信学会技術研究報告 Vol.115 No.369,2015年12月10日,pp.169-174
新井 拓人 他,高周波数帯Massive MIMOにおける時間軸ビームフォーミングの基本特性評価,電子情報通信学会2016年総合大会講演論文集 通信1 PROCEEDINGS OF THE 2016 IEICE GENERAL CONFERENCE,2016年 3月 1日
新井 拓人 他,高周波数帯Massive MIMOにおける時間軸ビームフォーミングの基本特性評価,電子情報通信学会2016年総合大会講演論文集 通信1 PROCEEDINGS OF THE 2016 IEICE GENERAL CONFERENCE,2016年 3月 1日
Attorney, Agent or Firm:
Shiga International Patent Office