Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-05-09
2006-05-09
Vu, Huy D. (Department: 2665)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S332000, C370S339000
Reexamination Certificate
active
07042860
ABSTRACT:
Signals received by a plurality of antenna elements are supplied to a beam forming circuit via a distributor. The beam forming circuit weights and combines the signals to output a reception signal corresponding to a beam having a predetermined directionality pattern. A weight used to control weighting and combining is set by a weight controller. Upon receiving a registration request from an unregistered terminal, the weight controller calculates a weight vector used to form a beam having null directionality toward that terminal, and maximum directionality toward the range of an area other than an area where the terminal is located of a plurality of areas obtained by dividing the area covered by the antenna elements in accordance with direction.
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U.S. Appl. No. 09/559,573, filed Apr. 28, 2000, Pending.
Kasami Hideo
Obayashi Shuichi
Kabushiki Kaisha Toshiba
Mattis Jason
Vu Huy D.
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