Method to improve the tracking speed of the early-late synchronizer

An early-late synchronizer is proposed to improve tracking speed. The performance of the traditional early-late synchronizer is analyzed, the result shows that the different location and length of integral period can influence the discriminator characteristic, an improved integral structure is provided which can tracking the synchronization error better. According to the good tracking performance of Kalman filter, a loop filter is designed. The early-late synchronizer adopts both the integral structure and the loop filter. The analysis with loop theory and simulation results in Simulink show that the new bit synchronizer possesses higher tracking speed than the traditional early-late synchronizer.