Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2008-03-04
2008-03-04
Trinh, Sonny (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S561000, C455S063400
Reexamination Certificate
active
11246098
ABSTRACT:
Disclosed are an apparatus for forward beamforming using a terminal feedback and a method thereof. The base station estimates an angle of arrival (AOA) range of a user signal from reverse link received data and calculates a plurality of beamforming weights steering the estimated AOA range. Then, the base station transmits a user pilot signal by sequentially using the plurality of beamforming weights at different time areas through a control channel to estimate a forward channel conditions. A terminal calculates the user pilot signal power for all fingers at the respective time areas and feeds a time area number corresponding to the greatest power back to the base station. The base station transmits a data channel signal using a beamforming weight corresponding to the time area number fed back from the terminal.
REFERENCES:
patent: 5634199 (1997-05-01), Gerlach et al.
patent: 5889815 (1999-03-01), Iwakiri
patent: 6031877 (2000-02-01), Saunders
patent: 6101399 (2000-08-01), Raleigh et al.
patent: 6122260 (2000-09-01), Liu et al.
patent: 6134261 (2000-10-01), Ryan
patent: 6173014 (2001-01-01), Forssen et al.
patent: 6542483 (2003-04-01), Dinc et al.
patent: 6621808 (2003-09-01), Sadri
patent: 6853839 (2005-02-01), Usuda et al.
patent: 6990137 (2006-01-01), Smee et al.
patent: 7194020 (2007-03-01), Farag et al.
patent: 2002/0181559 (2002-12-01), Heidari-Bateni et al.
Choi et al., Semi-blond method for transmit antenna array in CDMA systems, IEEE, VTC 2000, pp. 189-194.
Gerlach et al., Adaptive Transmitting Antenna Arrays with Feedback, IEEE Signal Processing Letters, vol. 1, No. 10, Oct. 1994, pp. 150-152.
Kyeong Mun Geon
Oh Hyun Seo
Park Hyeong Geun
Electronics and Telecommunications Research Institute
Lowe Hauptman & Ham & Berner, LLP
Trinh Sonny
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