Probabilistic constellation shaping for slot aggregation

An apparatus for wireless communications, comprising:

• at least one memory comprising instructions;
• and
• at least one processor configured to execute the instructions and cause the apparatus to:
• obtain a first plurality of bits from a first buffer, wherein a start position for obtaining the first plurality of bits from the first buffer is based on a redundancy version order;
• determine, based on a modulation order and a probability distribution associated with the first plurality of bits, at least one scaling factor for constellation mapping the first plurality of bits;
• and
• map, based on the at least one scaling factor, the first plurality of bits to one or more symbols.

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

• obtaining a first plurality of bits from a first buffer, wherein a start position for obtaining the first plurality of bits from the first buffer is based on a redundancy version order;
• determining, based on a modulation order and a probability distribution associated with the first plurality of bits, at least one scaling factor for constellation mapping the first plurality of bits;
• and
• mapping, based on the at least one scaling factor, the first plurality of bits to one or more symbols.

A non-transitory computer-readable medium comprising at least one instruction for causing a computer or processor to:

• obtain a first plurality of bits from a first buffer, wherein a start position for obtaining the first plurality of bits from the first buffer is based on a redundancy version order;
• determine, based on a modulation order and a probability distribution associated with the first plurality of bits, at least one scaling factor for constellation mapping the first plurality of bits;
• and
• map, based on the at least one scaling factor, the first plurality of bits to one or more symbols.