Subband level constellation shaping

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

• identifying a configuration indicating a mapping between a plurality of subband indices and a plurality of encoding parameter sets;
• applying, at a first distribution matcher, a first encoding parameter set of the plurality of encoding parameter sets to a first subset of a bit stream, wherein the first encoding parameter set is associated with a first subband index;
• applying, at a second distribution matcher, a second encoding parameter set of the plurality of encoding parameter sets to a second subset of the bit stream, wherein the second encoding parameter set is associated with a second subband index;
• transmitting, on a first subband corresponding to the first subband index, a first modulated bit stream corresponding to the first distribution matcher;
• and
• transmitting, on a second subband corresponding to the second subband index, a second modulated bit stream corresponding to the second distribution matcher.

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a base station, a configuration indicating a mapping between a plurality of subband indices and a plurality of encoding parameter sets;
• apply, at a first distribution matcher, a first encoding parameter set of the plurality of encoding parameter sets to a first subset of a bit stream, wherein the first encoding parameter set is associated with a first subband index;
• apply, at a second distribution matcher, a second encoding parameter set of the plurality of encoding parameter sets to a second subset of the bit stream, wherein the second encoding parameter set is associated with a second subband index;
• transmit, on a first subband corresponding to the first subband index, a first modulated bit stream corresponding to the first distribution matcher;
• and
• transmit, on a second subband corresponding to the second subband index, a second modulated bit stream corresponding to the second distribution matcher.

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• identify a configuration indicating a mapping between a plurality of subband indices and a plurality of encoding parameter sets;
• apply, at a first distribution matcher, a first encoding parameter set of the plurality of encoding parameter sets to a first subset of a bit stream, wherein the first encoding parameter set is associated with a first subband index;
• apply, at a second distribution matcher, a second encoding parameter set of the plurality of encoding parameter sets to a second subset of the bit stream, wherein the second encoding parameter set is associated with a second subband index;
• transmit, on a first subband corresponding to the first subband index, a first modulated bit stream corresponding to the first distribution matcher;
• and
• transmit, on a second subband corresponding to the second subband index, a second modulated bit stream corresponding to the second distribution matcher.