Novel Blind CFO Estimation Method for OFDM/OQAM System

To solve the performance degradation due to Carrier Frequency Offset (CFO) for OFDM/OQAM system, a new blind CFO estimation method is proposed in this letter. This method uses the header structure of the transmitted signal by considering that there is an OFDM/OQAM symbol of null-valued OQAM symbols before the first one and exploits the orthogonality among subcarriers as well as the orthogonality between synthesis and analysis filter banks to estimate the CFO. Therefore, without compromising the spectral efficiency of OFDM/OQAM system this method can estimate accurately the CFO. Simulation results illustrate the effectiveness of the proposed method.