Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2011-07-26
2011-07-26
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S316000, C375S347000, C375S348000, C375S349000, C375S350000, C375S351000, C455S067160, C455S278100, C455S304000
Reexamination Certificate
active
07986755
ABSTRACT:
An embodiment of the present invention includes a calibration system employed in a multi-input-multi-output (MIMO) system for beamforming and receiving a plurality of streams. The system includes a first calibration circuit responsive to inphase (I) and quadrature (Q) pairs of stream and operative to calibrate each I and Q pair and a second calibration circuit responsive to the calibrated I and Q pairs for all streams, wherein the first and second calibration circuits perform calibration in the time domain.
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Pare, Jr. Thomas Edward
Tung Chien-Cheng
Fan Chieh M
Imam Maryam
IPxLaw Group LLP
Ralink Technology Corporation
Vlahos Sophia
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