Techniques for generating and using longer low-density parity check codewords

An apparatus for wireless communications at a first wireless device, comprising:

• at least one processor;
• and
• at least one memory coupled with the at least one processor and storing instructions executable by the at least one processor to cause the apparatus to:
• perform a low-density parity check coding operation on a plurality of input bits, the performance of the low-density parity check coding operation on the plurality of input bits producing a plurality of output bits arranged in one or more codewords having a first codeword length and one or more codewords having a second codeword length, the first codeword length being selected in accordance with a size of a resource unit satisfying a first threshold, a modulation and coding scheme index for the low-density parity check coding operation satisfying a second threshold, a quantity of coded bits per symbol satisfying a third threshold, or any combination thereof, the first codeword length being a multiple of the second codeword length and longer than 1944 bits;
• arrange the one or more codewords into a plurality of symbols including one or more padded symbols after a forward error correction;
• and
• transmit, to a second wireless device via the resource unit, the plurality of symbols with a header indicating a quantity of the one or more padded symbols.

A method for wireless communications at a first wireless device, comprising:

• performing a low-density parity check coding operation on a plurality of input bits, the performance of the low-density parity check coding operation on the plurality of input bits producing a plurality of output bits arranged in a plurality of codewords including one or more codewords each having a first codeword length and one or more codewords each having a second codeword length that is shorter than the first codeword length, the first codeword length being a multiple of the second codeword length and longer than 1944 bits;
• arranging the plurality of codewords into a plurality of symbols such that a last symbol in time of the plurality of symbols includes at least a portion of the one or more codewords having the second codeword length and no codewords having the first codeword length;
• and
• transmitting, to a second wireless device, the plurality of symbols.

A method for wireless communications at a first wireless device, comprising:

• performing a low-density parity check coding operation on a plurality of input bits, the performance of the low-density parity check coding operation on the plurality of input bits producing a plurality of output bits arranged in one or more codewords having a first codeword length and one or more codewords having a second codeword length, the first codeword length being selected in accordance with a size of a resource unit satisfying a first threshold, a modulation and coding scheme index for the low-density parity check coding operation satisfying a second threshold, a quantity of coded bits per symbol satisfying a third threshold, or any combination thereof, the first codeword length being a multiple of the second codeword length and longer than 1944 bits;
• arranging the one or more codewords into a plurality of symbols including one or more padded symbols after a forward error correction;
• and
• transmitting, to a second wireless device via the resource unit, the plurality of symbols with a header indicating a quantity of the one or more padded symbols.