Receiver-side noise statistics and log likelihood ratio scaling for pre-equalization-based communication schemes

A second user equipment (UE), 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 second UE to:
• receive, from a first UE, a set of channel estimation reference signals dedicated for channel estimation of a channel between the second UE and the first UE;
• transmit, to the first UE and in response to the set of channel estimation reference signals, a set of quantized samples of the channel for channel estimation, the set of quantized samples based at least in part on the set of channel estimation reference signals;
• and
• receive, from the first UE, one or more pre-equalized transmissions that are pre-equalized based at least in part on a pre-equalization matrix, wherein the pre-equalization matrix is based at least in part on receiver-side noise statistics associated with the set of quantized samples of the channel.

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

• transmitting, to a second UE, a set of channel estimation reference signals dedicated for channel estimation of a channel between the first UE and the second UE;
• receiving, from the second UE and in response to the set of channel estimation reference signals, a set of quantized samples of the channel for channel estimation, the set of quantized samples based at least in part on the set of channel estimation reference signals;
• and
• transmitting, to the second UE, one or more pre-equalized transmissions that are pre-equalized based at least in part on a pre-equalization matrix, wherein the pre-equalization matrix is based at least in part on receiver-side noise statistics associated with the set of quantized samples of the channel.

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

• receiving, from a first UE, a set of channel estimation reference signals dedicated for channel estimation of a channel between the second UE and the first UE;
• transmitting, to the first UE and in response to the set of channel estimation reference signals, a set of quantized samples of the channel for channel estimation, the set of quantized samples based at least in part on the set of channel estimation reference signals;
• and
• receiving, from the first UE, one or more pre-equalized transmissions that are pre-equalized based at least in part on a pre-equalization matrix, wherein the pre-equalization matrix is based at least in part on receiver-side noise statistics associated with the set of quantized samples of the channel.