Generalization of encoding for uplink transmissions

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

• transmitting, to a user equipment (UE), an indication of a first set of angle parameters for the UE to use to encode uplink messages using an inverse fractional Fourier transform;
• receiving an uplink message from the UE on an uplink channel;
• and
• decoding the uplink message using a fractional Fourier transform according to an angle parameter of the first set of angle parameters.

An apparatus for wireless communications 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, an indication of a first set of angle parameters for the UE to use for an inverse fractional Fourier transform;
• encode an uplink message using the inverse fractional Fourier transform according to an angle parameter of the first set of angle parameters;
• and
• transmit, to the base station on an uplink channel, the uplink message that is encoded using the fractional Fourier transform according to the indicated angle parameter.

An apparatus for wireless communications 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:
• transmit, to a user equipment (UE), an indication of a first set of angle parameters for the UE to use to encode uplink messages using an inverse fractional Fourier transform;
• receive an uplink message from the UE on an uplink channel;
• and
• decode the uplink message using a fractional Fourier transform according to an angle parameter of the first set of angle parameters.