Channel Estimation for FBMC/OQAM with Fast Fading Channels by Kalman Filter

Since offset QAM-based filter bank multicarrier (FBMC/OQAM) systems has inherent imaginary interference, most channel estimation techniques for FBMC are now scattered auxiliary pilots on slow-fading channels. However, in more demanding scenarios, auxiliary pilots can prove to cause serious mistakes. In this paper, an algorithm of Kalman filter channel estimation based on feedback interference calculation pilot in fast fading channels is proposed. Simulation results show that the proposed method has good performance in time-varying multipath channels. Compared with the traditional channel estimation methods, the proposed method has greatly improved its performance.