Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-07-11
2006-07-11
Corsaro, Nick (Department: 2684)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S013400, C455S069000, C370S333000
Reexamination Certificate
active
07076263
ABSTRACT:
Techniques for controlling the transmit power for a number of data streams in a wireless multi-channel (e.g., MIMO) communication system. In one method, a number of received symbol streams are initially processed in accordance with a particular (e.g., CCMI, CCMI-SC, MMSE, or MMSE-SC) receiver processing technique to provide a number of detected data streams. The post-detection SNRs of the detected data streams are estimated, and each SNR that exceeds a setpoint is identified. This setpoint may correspond to (1) the SNR needed to achieve the maximum allowed spectral efficiency or (2) the target SNR needed to achieve a specified spectral efficiency. A new (or adjusted) transmit power for each detected data stream associated with a post-detection SNR that exceeds the setpoint is determined and used for the data stream. Different power control schemes are provided for different classes of receiver processing techniques with different characteristics.
REFERENCES:
patent: 5886988 (1999-03-01), Yun et al.
patent: 6308080 (2001-10-01), Burt et al.
patent: 6317612 (2001-11-01), Farsakh
patent: 6608874 (2003-08-01), Beidas et al.
patent: 2002/0018453 (2002-02-01), Yu et al.
patent: 2003/0078024 (2003-04-01), Magee et al.
patent: 2003/0092456 (2003-05-01), Dent
patent: 2003/0095197 (2003-05-01), Wheeler et al.
patent: 2003/0099306 (2003-05-01), Nilsson et al.
patent: 2003/0139194 (2003-07-01), Onggosanusi et al.
patent: 2003/0206558 (2003-11-01), Parkkinen et al.
patent: 0 805 568 (1997-11-01), None
patent: WO 98/09381 (1997-08-01), None
patent: WO 00/36764 (2000-06-01), None
patent: WO 01/76110 (2001-10-01), None
Ketchum John W.
Medvedev Irina
Walton Jay R.
Nguyen Thien T.
Qualcomm Incorporated
Trinh Tan
Wadsworth Philip R.
LandOfFree
Power control for partial channel-state information (CSI)... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power control for partial channel-state information (CSI)..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power control for partial channel-state information (CSI)... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3602131