5G USES ofdm-based waveform and multiple access technology, because OFDM technology is widely used in today's 4GLTE and wi-fi systems. Due to its scalability to large bandwidth applications, high spectrum efficiency and low data complexity, it can well meet the SG requirements. The OFDM family of technologies enables a variety of enhancements, such as enhanced frequency localization through windowing or filtering, increased multiplexing efficiency between different users and services, and the creation of single-carrier OFDM waveforms for energy-efficient uplink transmission