H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04B
TRANSMISSION
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H04B7/00
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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H04B7/08
at the receiving station
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H04B7/0868
Hybrid systems, i.e. switching and combining
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H04B7/088
using beam selection
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