Title:
MIMO COMMUNICATION SYSTEM FOR PROPAGATION ENVIRONMENT INCLUDING DETERMINISTIC COMMUNICATION CHANNEL, AND ANTENNAS FOR MIMO COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/192845
Kind Code:
A1
Abstract:
This MIMO communication system includes a transmitter and a receiver, and forms line-of-sight orthogonal transmission lines between transmitter-side transmitting antennas and receiver-side receiving antennas. The MIMO communication system is provided with an optimum antenna spacing reduction unit that reduces the optimum antenna spacing between the transmitting antennas and the receiving antennas by changing the phase rotation of a carrier wave used for directly opposing waves between facing antennas, and the phase rotation of a carrier wave used for intersecting waves between oblique antennas, in such a manner that the amount that each phase rotation changes is different than the other.
Inventors:
MARU TSUGUO (JP)
Application Number:
PCT/JP2014/064213
Publication Date:
December 04, 2014
Filing Date:
May 29, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J99/00; H01Q15/00; H04B7/04
Domestic Patent References:
| WO2012002162A1 | 2012-01-05 |
Foreign References:
| EP2180623A1 | 2010-04-28 | |||
| JP2005354595A | 2005-12-22 | |||
| JP2014027347A | 2014-02-06 |
Other References:
KAZUMITSU SAKAMOTO ET AL.: "A method for controlling phase difference between propagation channels for short-range MIMO transmission", ANTENNAS AND PROPAGATION (ISAP), 2012 INTERNATIONAL SYMPOSIUM ON, 29 October 2012 (2012-10-29)
Attorney, Agent or Firm:
NAGAI Michio et al. (JP)
Michio Nagai (JP)
Michio Nagai (JP)
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