Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-06-07
2009-06-16
Tran, Khai (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S260000
Reexamination Certificate
active
07548589
ABSTRACT:
Techniques for generating weights that can provide good performance for transmit diversity are described. A receiver obtains symbols for a data transmission sent from multiple transmit antennas to at least one receive antenna. The receiver also derives channel estimates for a communication channel between the transmit antennas and the receive antenna(s). The receiver performs equalization on the symbols with an equalizer, which may be a linear equalizer or a decision feedback equalizer. The receiver derives weights for the transmit antennas based on the channel estimates and the equalizer and using, e.g., an objective function that is applicable for the equalizer and indicative of a signal-to-noise ratio (SNR) achievable by the equalizer. Different equalizers (e.g., the linear equalizer and decision feedback equalizer) may be associated with different objective functions.
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Jenckes Kenyon S.
Patel Rupit M.
QUALCOMM Incorporated
Tran Khai
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