

DFTsOFDM(DFT spread OFDM)You would know of SCOFDM because this is the waveform that we use in current LTE. If you are familiar with SCFDMA, you can easily understand DFTsOFDM. High level view of DFTsOFDM waveform generation is illustrated as follows. You would notice that this is almost same as high level SCOFDM process.
Reference[1] FrequencyDomain Equalization and SingleCarrier Transmission in OFDM Framework by Markku Renfors

