Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04B
TRANSMISSION
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7/00
Radio transmission systems, i.e. using radiation field
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H04B7/02
Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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H04B7/04
using two or more spaced independent antennas
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H04B7/0456
Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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H04B7/0478
Special codebook structures directed to feedback optimisation
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H04B7/0479
for multi-dimensional arrays, e.g. horizontal or vertical pre-distortion matrix index [PMI]
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