Adaptive modulation and coding
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United States of America Patent
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Sep 5, 2006
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N/A
app pub date -
Apr 5, 2002
filing date -
Apr 5, 2002
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Abstract
The present invention selects a space-time encoding mode to use when transmitting with spatial diversity based on the receive diversity associated with a receiver device and the quality of the transmission channels based on information fed back from the receiver device. The selectable space-time encoding modes are preferably space-time transmit diversity encoding and a version of BLAST-type encoding. Further, modulation modes, error encoding rates, or a combination thereof, may also be based on the quality of the transmission channels and the available diversity of the receiver device.
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