Channel estimation reference signals for pre-equalization

A wireless device for wireless communication, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:
• receive, from a user equipment (UE), one or more downlink reference signals via a sidelink communication link;
• transmit, to the UE via the sidelink communication link, a sample message indicating raw reference signal samples of the one or more downlink reference signals;
• and
• receive a data signal from the UE, wherein the data signal is pre-equalized in accordance with a downlink channel estimation that is based at least in part on a reconstruction of the raw reference signal samples.

A method for wireless communications at a user equipment (UE), comprising:

• transmitting one or more downlink reference signals to a wireless device via a sidelink communication link;
• receiving, from the wireless device via the sidelink communication link, a sample message indicating raw reference signal samples of the one or more downlink reference signals;
• and
• transmitting a data signal to the wireless device, wherein the data signal is pre-equalized using a downlink channel estimation that is based at least in part on a reconstruction of the raw reference signal samples.

A method for wireless communications at a wireless device, comprising:

• receiving, from a user equipment (UE), one or more downlink reference signals via a sidelink communication link;
• transmitting, to the UE via the sidelink communication link, a sample message indicating raw reference signal samples of the one or more downlink reference signals;
• and
• receiving a data signal from the UE, wherein the data signal is pre-equalized in accordance with a downlink channel estimation that is based at least in part on a reconstruction of the raw reference signal samples.