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US 2011/0211651 A1Published application
Precoding for time or frequency correlated MIMO channels
AssigneeNEC Laboratories America, Inc.
InventorMohammad A. Khojastepour
Life of this patent
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Abstract
Systems and methods are disclosed to generate a codebook for channel state information by generating a random codebook; partitioning channel state information into a set of nearest neighbors for each codebook entry based on a distance metric; and updating the codebook by finding a centroid for each partition.
Claims21
1-18. (canceled)
A method of precoding for data transmission comprising the steps of:
- determining the precoder for a group of transmitted symbols;
- and
- differentially determining the precoder for the adjacent groups of transmitted symbols
A method of data signal reception comprising the steps of:
- signaling the precoder for the group signals that will be transmitted from the transmitter;
- and
- signaling the precoder for the adjacent groups of signals that will be transmitted from the transmitter
Dependencies are inferred from the claim text.