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 You would know of SC-OFDM because this is the waveform that we use in current LTE. If you are familiar with SC-FDMA, you can easily understand DFT-s-OFDM. High level view of DFT-s-OFDM waveform generation is illustrated as follows. You would notice that this is almost same as high level SC-OFDM process.






[1]  Frequency-Domain Equalization and Single-Carrier Transmission in OFDM Framework by Markku Renfors