Probabilistic amplitude shaping with forward error correction code rate based on modulation order

A network entity for wireless communication, comprising:

• at least one memory;
• and
• at least one processor coupled to the at least one memory, wherein the network entity is configured to:
• receive a transmission including a modulation symbol corresponding to a set of shaped bits and a set of parity bits encoded according to a probabilistic amplitude shaping (PAS) configuration for a modulation scheme, wherein a quantity of shaped bits in the set of shaped bits is based on a modulation order of the modulation scheme;
• determine a threshold native code rate for a forward error correction (FEC) decoder, wherein the threshold native code rate is determined based on the modulation order;
• obtain a decoding configuration for the FEC decoder, wherein the decoding configuration corresponds to the threshold native code rate, and wherein the decoding configuration is obtained from among a plurality of candidate decoding configurations corresponding to a respective plurality of native code rates;
• determine, using the FEC decoder configured with the decoding configuration, parity check information corresponding to at least one of the modulation symbol or the set of parity bits, wherein a quantity of parity bits in the set of parity bits is based on the threshold native code rate;
• and
• decode the modulation symbol from the transmission and the parity check information, the modulation symbol corresponding to the set of shaped bits and the set of parity bits.

A method for wireless communication, comprising:

• obtaining a set of shaped bits encoded according to a probabilistic amplitude shaping (PAS) configuration for a modulation scheme, wherein a quantity of shaped bits in the set of shaped bits is based on a modulation order of the modulation scheme;
• determining a threshold native code rate for a forward error correction (FEC) encoder, wherein the threshold native code rate is determined based on the modulation order;
• obtaining an encoding configuration for the FEC encoder, wherein the encoding configuration corresponds to the threshold native code rate, and wherein the encoding configuration is obtained from among a plurality of candidate encoding configurations corresponding to a respective plurality of native code rates;
• generating, using the FEC encoder configured with the encoding configuration, a set of parity bits corresponding to the set of shaped bits, wherein a quantity of parity bits in the set of parity bits is based on the threshold native code rate;
• and
• outputting a modulation symbol of the modulation scheme, the modulation symbol corresponding to the set of shaped bits and the set of parity bits.

A method for wireless communication, comprising:

• receiving a transmission including a modulation symbol corresponding to a set of shaped bits and a set of parity bits encoded according to a probabilistic amplitude shaping (PAS) configuration for a modulation scheme, wherein a quantity of shaped bits in the set of shaped bits is based on a modulation order of the modulation scheme;
• determining a threshold native code rate for a forward error correction (FEC) decoder, wherein the threshold native code rate is determined based on the modulation order;
• obtaining a decoding configuration for the FEC decoder, wherein the decoding configuration corresponds to the threshold native code rate, and wherein the decoding configuration is obtained from among a plurality of candidate decoding configurations corresponding to a respective plurality of native code rates;
• determining, using the FEC decoder configured with the decoding configuration, parity check information corresponding to at least one of the modulation symbol or the set of parity bits, wherein a quantity of parity bits in the set of parity bits is based on the threshold native code rate;
• and
• decoding the modulation symbol from the transmission and the parity check information, the modulation symbol corresponding to the set of shaped bits and the set of parity bits.