Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-05-22
2007-05-22
Anderson, Matthew D. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S013400, C455S101000, C455S132000
Reexamination Certificate
active
11049319
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: 6084915 (2000-07-01), Williams
patent: 6308080 (2001-10-01), Burt et al.
patent: 2002/0018453 (2002-02-01), Yu et al.
patent: 2002/0057659 (2002-05-01), Ozluturk et al.
patent: 2003/0139194 (2003-07-01), Onggosanusi et al.
patent: 2003/0157954 (2003-08-01), Medvedev et al.
Ketchum John W.
Medvedev Irina
Walton Jay R.
Anderson Matthew D.
Brown Charles D.
Qualcomm Incorporated
Rouse Thomas
Seo Howard H.
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