Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2003-10-08
2010-06-22
Payne, David C (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S229000, C375S265000, C375S262000, C370S480000, C370S497000, C370S498000, C370S529000
Reexamination Certificate
active
07742546
ABSTRACT:
For eigenmode transmission with minimum mean square error (MMSE) receiver spatial processing, a transmitter performs spatial processing on NSdata symbol streams with steering vectors to transmit the streams on NSspatial channels of a MIMO channel. The steering vectors are estimates of transmitter steering vectors required to orthogonalize the spatial channels. A receiver derives a spatial filter based on an MMSE criterion and with an estimate of the MIMO channel response and the steering vectors. The receiver (1) obtains NRreceived symbol streams from NRreceive antennas, (2) performs spatial processing on the received symbol streams with the spatial filter to obtain NSfiltered symbol streams, (3) performs signal scaling on the filtered symbol streams with a scaling matrix to obtain NSrecovered symbol streams, and (4) processes the NSrecovered symbol streams to obtain NSdecoded data streams for the NSdata streams sent by the transmitter.
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Howard Steven J.
Ketchum John W.
Wallace Mark S.
Walton J. Rodney
Franks Ross L.
Nguyen Thien T.
Payne David C
QUALCOMM Incorporated
Wong Linda
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