CPC H04B 7/0404 (2013.01) [H04B 7/0456 (2013.01); H04B 7/063 (2013.01); H04B 7/0634 (2013.01); H04B 7/0639 (2013.01)] | 30 Claims |
1. A user equipment (UE) for wireless communication, comprising:
memory; and
one or more processors coupled to the memory, the one or more processors configured to:
receive downlink control information that indicates a transmit precoding matrix indicator, that identifies a precoding matrix, and a set of demodulation reference signal (DMRS) antenna ports, wherein:
a first association is between a first set of antenna indices of the precoding matrix, that form a first transmission group, and a first code-division multiplexing (CDM) group of the set of DMRS antenna ports,
a second association is between a second set of antenna indices of the precoding matrix, that form a second transmission group, and a second CDM group of the set of DMRS antenna ports, and
the first set of antenna indices is different than the second set of antenna indices and the first CDM group is different than the second CDM group; and
transmit an uplink transmission according to the first association and the second association.
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