Research on TDMA Burst Carrier Synchronization Based on LEO Satellite

The high-speed motion of satellites will bring larger doppler frequency shift in LEO satellite communication system. This will seriously affect carrier synchronization of short burst signal in TDMA systems. In this paper, a carrier synchronization scheme based on doppler frequency shift pre-compensation and an improved method for estimating frequency offset is proposed. This scheme improves carrier synchronization performance by compensating Doppler frequency shift and preprocessing signal. The simulation results show that the scheme is feasible and effective in low SNR.