Estimation of power amplifier nonlinearity based on multiplexed reference signals within a slot

An apparatus for wireless communications at a user equipment (UE), comprising:

• a processor;
• and
• a memory coupled with the processor and storing instructions operable, when executed by the processor, to cause the apparatus to:
• transmit, to a network node, a first message indicating a capability of the UE to transmit a multiplexed low peak-to-average power ratio (PAPR) demodulation reference signal (DM-RS) and a high PAPR reference signal (RS) within a single slot;
• multiplex, associated with the capability, the low PAPR DM-RS with the high PAPR RS within the single slot, such that each of the low PAPR DM-RS and the high PAPR RS is allocated to a respective single symbol of the single slot in accordance with the multiplexing, remaining symbols of the single slot being allocated to high PAPR data;
• and
• transmit, to the network node, the multiplexed low PAPR DM-RS and high PAPR RS within the single slot.

A method for wireless communication by a network node, comprising:

• transmitting a first message indicating a capability of the network node to transmit a multiplexed low peak-to-average power ratio (PAPR) demodulation reference signal (DM-RS) and another PAPR reference signal (RS) within a single slot;
• multiplexing, associated with the capability, the low PAPR DM-RS with the high PAPR RS within the single slot, such that each of the low PAPR DM-RS and the high PAPR RS is allocated to a respective single symbol of the single slot, remaining symbols of the single slot being allocated to high PAPR data;
• and
• transmitting the multiplexed PAPR DM-RS and high PAPR RS within the single slot.

An apparatus for wireless communications at a network node, comprising:

• a processor;
• and
• a memory coupled with the processor and storing instructions operable, when executed by the processor, to cause the apparatus to:
• transmit a first message indicating a capability of the network node to transmit a multiplexed low peak-to-average power ratio (PAPR) demodulation reference signal (DM-RS) and another PAPR reference signal (RS) within a single slot;
• multiplex, associated with the capability, the low PAPR DM-RS with the high PAPR RS within the single slot, such that each of the low PAPR DM-RS and the high PAPR RS is allocated to a respective single symbol of the single slot in accordance with the multiplexing, remaining symbols of the single slot being allocated to high PAPR data;
• and
• transmit the multiplexed PAPR DM-RS and high PAPR RS within the single slot.