Techniques for using a non-linear model to indicate data in wireless communications

An apparatus for wireless communication, comprising:

• a transceiver;
• a memory configured to store instructions;
• and
• one or more processors communicatively coupled with the memory and the transceiver, wherein the one or more processors are configured to execute the instructions to cause the apparatus to:
• receive an analog signal from a user equipment (UE);
• and
• estimate, in converting a symbol indicating first data into the analog signal, a non-linear function applied to the analog signal to be one of multiple non-linear functions used to indicate either a first value for second data or a second value of the second data, wherein estimating the non-linear function provides an indication of the first value or the second value for the second data, separate from first data.

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

• selecting a non-linear function from multiple non-linear functions as one of a first non-linear function to indicate a first value for second data or a second non-linear function to indicate a second value for the second data, wherein the first non-linear function is different than the second non-linear function;
• converting, by applying the non-linear function, a symbol indicating first data into an analog signal for transmission to a network node, wherein applying the non-linear function to the symbol adds an indication of the first value or the second value of the second data, separate from the first data, in the analog signal;
• and
• transmitting the analog signal to the network node.