Iterative phase-noise cancellation

A method for wireless communication at a base station, comprising:

• receiving, from a user equipment (UE), a request for a data transmission comprising multiple subsets of data associated with multiple increasing constellation granularities, each subset of data associated with a different constellation granularity of the multiple increasing constellation granularities;
• transmitting, to the UE, a response to the request, the response indicating that the data transmission comprises the multiple subsets of data and each subset of data is associated with the different constellation granularity of the multiple increasing constellation granularities;
• encoding, based at least in part on receiving the request and based at least in part on transmitting the response, a first subset of data in the data transmission using a first constellation granularity and a second subset of data in the data transmission using a second constellation granularity that is greater than the first constellation granularity based at least in part on the response indicating that the data transmission comprises the multiple increasing constellation granularities;
• and
• transmitting, to the UE, the data transmission comprising the first subset of data associated with the first constellation granularity and the second subset of data associated with the second constellation granularity.

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

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories, wherein the one or more processors are configured to cause the apparatus to:
• transmit, to a base station, a request for a data transmission comprising multiple subsets of data associated with multiple increasing constellation granularities, each subset of data associated with a different constellation granularity of the multiple increasing constellation granularities;
• receive, from the base station, a response to the request, the response indicating that the data transmission comprises the multiple subsets of data and each subset of data is associated with the different constellation granularity of the multiple increasing constellation granularities;
• receive, from the base station and based at least in part on the response, the data transmission comprising a first subset of data associated with a first constellation granularity and a second subset of data associated with a second constellation granularity that is greater than the first constellation granularity based at least in part on the response indicating that the data transmission comprises the multiple increasing constellation granularities;
• estimate a first phase-noise associated with the first subset of data based at least in part on decoding the first subset of data;
• and
• estimate, based at least in part on estimating the first phase-noise associated with the first subset of data, a second phase-noise associated with the second subset of data.

An apparatus for wireless communication at a base station, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories, wherein the one or more processors are configured to cause the apparatus to:
• receive, from a user equipment (UE), a request for a data transmission comprising multiple subsets of data associated with multiple increasing constellation granularities, each subset of data associated with a different constellation granularity of the multiple increasing constellation granularities;
• transmit, to the UE, a response to the request, the response indicating that the data transmission comprises the multiple subsets of data and each subset of data is associated with the different constellation granularity of the multiple increasing constellation granularities;
• encode, based at least in part on receiving the request and based at least in part on transmitting the response, a first subset of data in the data transmission using a first constellation granularity and a second subset of data in the data transmission using a second constellation granularity that is greater than the first constellation granularity based at least in part on the response indicating that the data transmission comprises the multiple increasing constellation granularities;
• and
• transmit, to the UE, the data transmission comprising the first subset of data associated with the first constellation granularity and the second subset of data associated with the second constellation granularity.