Review of Channel Estimation Algorithm for OFDM High-speed Channel Scenario

Mobile communication systems in high-speed environments have become a research hotspot. Meanwhile, Orthogonal Frequency Division Multiplexing (OFDM)has high bandwidth efficiency and good anti-interference performance, which is widely used in wireless communication. However, in high-speed scenarios, the channel has serious time-frequency attenuation, which causes Intersymbol Interference (ISI) and Intercarrier Interference (ICI) in OFDM system, thus increasing the complexity of channel estimation. In this paper, the developed high-speed channel models using different methods are discussed. The channel estimation algorithm based on traditional algorithm and the channel estimation algorithm based on deep learning are analyzed respectively.