A Fast Algorithm of Carrier Frequency Based on Single Profiled SCD for MPSK Signals

Through analyzing the SCD of MPSK signals,the relationship is got between the carrier frequency and peaks in SCD.By making use of the symmetry of SCD,a novel algorithm based on the single profile f=0 of SCD is proposed.It searched the peaks in the profile,which help to estimate the carrier frequency.The algorithm reduces the computation by depressing the 2-D to 1-D and it improves the anti-noise compared to complete sequence domain smoothing.Experimental simulations verify the effectiveness of the proposed algorithm for different MPSK signals and can get precise estimation under low SNR.