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US Patent 7324470 FDD/CDMA receiver having transmission antenna control circuit

Patent 7324470 was granted and assigned to NEC Corporation on January, 2008 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Akihisa Ushirokawa0

Shousei Yoshida0

Date of Patent

January 29, 2008

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Patent Application Number

099578710

Date Filed

September 21, 2001

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Patent Primary Examiner

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Patent 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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