Space-frequency precoding for hybrid frequency multi-hop links with line-of-sight multiple-input and multiple-output on an intermediate hop

An apparatus of wireless communication at a wireless device, comprising:

• memory;
• and
• at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
• receive a signal from a repeater comprising data precoded based on a space-frequency precoding scheme across a plurality of spatial ports and virtual ports;
• and
• derive separate virtual data streams by applying a space-frequency minimum mean square error (MMSE) combining of the received signal across multiple reception ports.

An apparatus of wireless communication at a repeater, comprising:

• memory;
• and
• at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
• receive, over a first frequency bandwidth, a signal from a first wireless device, the signal comprising data precoding based on a space-frequency precoding scheme across a plurality of spatial ports and virtual ports;
• and
• forward, without decoding, the signal to a second wireless device over a second frequency bandwidth as a line-of-sight (LOS) multiple-input and multiple-output (MIMO) signal.

An apparatus of wireless communication at an access point (AP) that supports multiple hop wireless communication for a user equipment (UE) over a first frequency bandwidth, the apparatus comprising:

• memory;
• and
• at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
• receive, from a repeater, a signal comprising data precoded based on a space-frequency precoding scheme across a plurality of spatial ports and virtual ports, the signal received as a line-of-sight (LOS) multiple-input and multiple-output (MIMO) over a second frequency bandwidth;
• recompose the signal to the first frequency bandwidth;
• and
• transmit the signal to the UE over the first frequency bandwidth.