ICI cancellation method for OFDM systems using compressed sensing based channel estimation

The time-varying multipath fading causes the intercarrier interference (ICI) that destroys the orthogonality between the subcarriers for orthogonal frequency division multiplexing (OFDM) systems. In this paper, we propose an iterative equalization method using channel estimation based on compressed sensing (CS) that can be used to optimize and reconstruct the channel state information (CSI) for sparse channel. Simulation results demonstrate that the proposed method significantly improves the system performance, comparing with the conventional Least Square (LS) methods.