Orthogonal Angle Domain Subspace Projection Based Time-Frequency Synchronization Algorithm for High-speed Mobile Environment
Zeng Ron · Dianzi xuebao · 2013
In high-speed mobile environment,wireless channel shows serious time-varying characteristic.The Doppler spread caused by different Doppler frequency offset of each arrived multi-path signal worsens the performance of time-frequency synchronization algorithm.In this paper,a novel orthogonal angle domain subspace projection based time-frequency synchronization algorithm is proposed.In this algorithm,the angle resolution from multiple antennas system is utilized to simplify the Doppler spread as Doppler frequency offset on each orthogonal angle domainsubspace,which can improve the performance of time-frequency synchronization algorithm.Simulation results show that the proposed algorithm suppress the effect caused by time-varying wireless channel