Precoding wireless communications using closed-loop and open-loop techniques

An apparatus for wireless communication, comprising:

• a transceiver;
• one or more memories configured to, individually or in combination, store instructions;
• and
• one or more processors communicatively coupled with the one or more memories, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to:
• receive a reference signal transmitted by a node;
• transmitting, based on measuring the reference signal, feedback indicating a first precoder for communicating with the node in a wideband;
• and
• receiving communications from the node in a plurality of subbands of the wideband using a plurality of precoders, wherein each precoder of the plurality of precoders is based at least in part on a wideband precoder that is based on the first precoder and a subband-specific precoder for a corresponding subband in the plurality of subbands,
• wherein a first subband precoder of the plurality of precoders for a first subband of the plurality of subbands is different from a second subband precoder of the plurality of precoders for a second subband of the plurality of subbands.