ABSTRACT
With the rapid development of communication technology, people’s demand for bandwidth, high speed and reliable communication is becoming higher and higher, and various new modulation techniques are emerging. Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technology with high frequency spectrum utilization, which has the characteristics of anti-multipath fading and high spectrum utilization. It has been widely used in military communication and civil communication, for example, Digital Audio Broadcasting, Asymmetric Digital Subscriber Line, Digital Video Broadcasting, Wireless Local Access Network, and the fourth generation mobile communication, etc.
