Repetition on subcarriers for noncoherent modulation

An apparatus for wireless communications, comprising:

• one or more processors,
• memory coupled with the one or more processors;
• and
• instructions stored in the memory and executable by the one or more processors to cause the apparatus to:
• encode a set of data bits to transmit to a receiving device using an increased encoding rate, wherein the increased encoding rate is based on an encoding rate that is scaled by a repetition factor, wherein the increased encoding rate is greater than the encoding rate;
• rate match the set of encoded data bits based at least in part on the encoding rate scaled by the repetition factor;
• map, based at least in part on the repetition factor, the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers of a set of subcarriers;
• generate a signal comprising the set of encoded data bits based at least in part on the mapping;
• and
• transmit the signal to the receiving device.

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

• means for encoding a set of data bits to transmit to a receiving device using an increased encoding rate, wherein the increased encoding rate is based on an encoding rate that is scaled by a repetition factor, wherein the increased encoding rate is greater than the encoding rate;
• means for rate matching the set of encoded data bits based at least in part on the encoding rate scaled by the repetition factor;
• means for mapping, based at least in part on the repetition factor, the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers of a set of subcarriers;
• means for generating a signal comprising the set of encoded data bits based at least in part on the mapping;
• and
• means for transmitting the signal to the receiving device.

A non-transitory computer-readable medium storing code for wireless communications at a transmitting device, the code comprising instructions executable by a processor to:

• encode a set of data bits to transmit to a receiving device using an increased encoding rate, wherein the increased encoding rate is based on an encoding rate that is scaled by a repetition factor, wherein the increased encoding rate is greater than the encoding rate;
• rate matching the set of encoded data bits based at least in part on the encoding rate scaled by the repetition factor;
• mapping, based at least in part on the repetition factor, the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers of a set of subcarriers;
• generate a signal comprising the set of encoded data bits based at least in part on the mapping;
• and
• transmit the signal to the receiving device.