METHOD, TRANSMITTER AND RECEIVER FOR BEAMFORMING
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Mar 16, 2011
filing date -
Mar 16, 2011
priority date (Note) -
Abandoned
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Abstract
Embodiments of the invention provide a method for beamforming based on Grassmannian predictive coding (GPC) in a MIMO system. The method may comprise steps of: estimating present channel direction information (CDI) according to a received signal; predicting future CDI based on the present CDI and at least one of previous CDIs; predicting future codebook based on present codebook and at least one of previous codebooks; selecting a codeword from the future codebook based on the future CSI; and feeding back an index of the selected codeword to the transmitter.
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