Transmit antenna multi-mode tracking
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United States of America Patent
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Jul 24, 2007
Grant Date -
N/A
app pub date -
Jul 17, 2002
filing date -
Mar 23, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are methods and apparatuses for use in wireless communication between a transmitter having plural transmit antennas and a receiver having plural receive antennas. A first data stream using a first transmit antenna weight vector and a second data stream using a second transmit antenna weight vector simultaneously are transmitted to the receiver. In addition, a first perturbation signal corresponding to the first transmit antenna weight vector and a second perturbation signal corresponding to the second transmit antenna weight vector are transmitted. Feedback regarding the first transmit antenna weight vector and the second transmit antenna weight vector is received from the receiver and is utilized to modify the first transmit antenna weight vector and the second transmit antenna weight vector.
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