A novel Carrier Frequency Offset tracking algorithm for OFDM systems using LS-ICA and fractional sampling

A novel carrier frequency offset (CFO) tracking algorithm for orthogonal frequency division multiplexing (OFDM) systems using least square independent component analysis (LS-ICA) and fractional sampling method is proposed. Simulation results show that the LS-ICA method can obtained a better mean square error (MSE) performance than maximum-likelihood (ML) CFO tracking scheme. Compared with the cyclic prefix independent component analysis (CP-ICA) CFO tracking scheme, the proposed method can obtain a much lower computational complexity and a better MSE performance over AWGN and multipath Rayleigh channel.