Multiplex communications – Communication over free space – Repeater
Patent
1996-07-17
1999-03-23
Pham, Chi H.
Multiplex communications
Communication over free space
Repeater
370335, H04J 1300
Patent
active
058869875
ABSTRACT:
An FDD/CDMA transmission/reception system includes a CDMA transmitter and a CDMA receiver. The CDMA transmitter includes a plurality of transmission antennas, signal transmission units for transmitting transmission signals weighted by different values to the respective transmission antennas, and pilot signal transmission units for transmitting a plurality of different pilot signals to the respective transmission antennas. The CDMA receiver includes a reception unit for obtaining one received signal from the transmission signals from the plurality of transmission antennas of the CDMA transmitter in consideration of reception quality, and a unit for transmitting antenna control signals corresponding to reception power values of the received pilot signals to the CDMA transmitter.
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Ushirokawa Akihisa
Yoshida Shousei
NEC Corporation
Pham Chi H.
Yao Kwang B.
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