WIRELESS COMMUNICATION SYSTEM CONTROL METHOD, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND ARRAY WEIGHT VECTOR ADJUSTMENT METHOD

WIPO Patent Application WO/2010/143353

A1

In order to suppress the adverse effects of the side lobes of an antenna array when determining an array weight vector (AWV) used for communication based on the transmission/reception results of a training signal, one of two transmission/reception devices generates a fixed beam pattern and transmits a training signal, while the other transmission/reception device scans the main beam direction, receives the training signal and identifies a plurality of signal arrival directions. Subsequently, the other transmission/reception device receives the training signal in series in the aforementioned arrival directions while the reception of the signal is restricted (e.g., while the null direction or a direction equivalent thereto is set to the arrival directions) and calculates the difference in the signal properties compared to the first reception. An AWV having a main beam or a beam direction equivalent thereto in the arrival directions excluding those in which the difference falls below a preset threshold is obtained and is used in the communication between the two transmission/reception devices.

HOSOYA KENICHI (JP)
MARUHASHI KENICHI (JP)
ORIHASHI NAOYUKI (JP)

PCT/JP2010/003054

December 16, 2010

April 28, 2010

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NEC CORP (JP)
HOSOYA KENICHI (JP)
MARUHASHI KENICHI (JP)
ORIHASHI NAOYUKI (JP)

H04B7/10; H04W16/28

WO2008090836A1

2008-07-31

JP2005195448A

2005-07-21

IEIRI, Takeshi (JP)
家入健 (JP)

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