Reduced bandwidth pulse shaping schemes for spectral efficiency

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

• wirelessly receiving first control information indicating a configuration for discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform transmission, the configuration indicating a modulation scheme and a pulse shaping scheme;
• wirelessly receiving second control information indicating a resource allocation for transmission of a DFT-s-OFDM waveform, wherein a first bandwidth of the resource allocation is different from a second bandwidth associated with a plurality of symbols output by the modulation scheme;
• and
• wirelessly transmitting the DFT-s-OFDM waveform within the second bandwidth in accordance with the configuration,
• wherein the DFT-s-OFDM waveform is associated with a symbol subset of the plurality of symbols, and
• wherein the plurality of symbols are pulse shaped in accordance with the pulse shaping scheme and a frequency-domain symmetry of the plurality of symbols to obtain the symbol subset that conforms to the second bandwidth.

A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to:

• wirelessly receive first control information indicating a configuration for discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform transmission, the configuration indicating a modulation scheme and a pulse shaping scheme;
• wirelessly receive second control information indicating a resource allocation for transmission of a DFT-s-OFDM waveform, wherein a first bandwidth of the resource allocation is different from a second bandwidth associated with a plurality of symbols output by the modulation scheme;
• and
• wirelessly transmit the DFT-s-OFDM waveform within the second bandwidth in accordance with the configuration,
• wherein the DFT-s-OFDM waveform is associated with a symbol subset of the plurality of symbols, and
• wherein the plurality of symbols are pulse shaped in accordance with the pulse shaping scheme and a frequency-domain symmetry of the plurality of symbols to obtain the symbol subset that conforms to the second bandwidth.