Multiple discrete fourier transforms for transmission and reception

A method performed by a user equipment (“UE”), comprising:

• receiving a first configuration to apply multiple discrete Fourier transform (“DFT”)-based waveforms at a transmitter, a receiver, or a combination thereof;
• receiving a second configuration for a channel, the second configuration comprising a set of DFTs to apply at the transmitter for transforming one or more signals or channels from a time domain to a frequency domain, a size of each DFT of the set of DFTs, and a mapping pattern for mapping an output of each DFT of the set of DFTs onto one or more subcarriers in the frequency domain for a symbol;
• receiving a third configuration for determining, based on the second configuration, an inverse-DFT (“IDFT”) configuration comprising a set of IDFTs to apply on the symbol to receive one or more signals, a size of each IDFT of the set of IDFTs, and a de-mapping pattern for de-mapping an output of each IDFT of the set of IDFTs from one or more subcarriers in the frequency domain to a symbol;
• performing multiple DFT-based transmissions on a symbol based on the first and second configurations;
• and
• performing multiple IDFT-based receptions of a symbol based on the third configuration.

A base station for wireless communication, comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the base station to:
• determine a first configuration for applying multiple discrete Fourier transform (“DFT”)-based waveforms at a transmitter, a receiver, or some combination thereof;
• determine a second configuration for a channel, the second configuration comprising a set of DFTs to apply at the transmitter for transforming one or more signals or channels from a time domain to a frequency domain, a size of each DFT of the set of DFTs, and a mapping pattern for mapping an output of each DFT of the set of DFTs onto one or more subcarriers in the frequency domain for a symbol;
• determine a third configuration for determining an inverse-DFT (“IDFT”) configuration comprising a set of IDFTs to apply on the symbol to receive one or more signals, a size of each IDFT of the set of IDFTs, and a de-mapping pattern for de-mapping an output of each IDFT of the set of IDFTs from one or more subcarriers in the frequency domain to a symbol;
• transmit the determined first, second, and third configurations to a user equipment (“UE”) device;
• and
• transmit a symbol to the UE for performing multiple IDFT-based receptions of the symbol based on the third configuration.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• receive a first configuration to apply multiple discrete Fourier transform (“DFT”)-based waveforms at a transmitter, a receiver, or some combination thereof;
• receive a second configuration for a channel, the second configuration comprising a set of DFTs to apply at the transmitter for transforming one or more signals or channels from a time domain to a frequency domain, a size of each DFT of the set of DFTs, and a mapping pattern for mapping an output of each DFT of the set of DFTs onto one or more subcarriers in the frequency domain for a symbol;
• receive a third configuration for determining, based on the second configuration, an inverse-DFT (“IDFT”) configuration comprising a set of IDFTs to apply on the symbol to receive one or more signals, a size of each IDFT of the set of IDFTs, and a de-mapping pattern for de-mapping an output of each IDFT of the set of IDFTs from one or more subcarriers in the frequency domain to a symbol;
• perform multiple DFT-based transmissions on a symbol based on the first and second configurations;
• and
• performs multiple IDFT-based receptions of a symbol based on the third configuration.