Adaptive OFDM synchronization algorithms based on discrete stochastic approximation
IEEE Transactions on Signal Processing
ML estimation of time and frequency offset in OFDM systems
IEEE Transactions on Signal Processing
Robust timing synchronization design in OFDM systems - Part II: high-mobility cases
IEEE Transactions on Wireless Communications
Theoretical studies and efficient algorithm of semi-blind ICI equalization for OFDM
IEEE Transactions on Wireless Communications
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Time and frequency synchronization is one of the most important tasks in an OFDM system. An improved adaptive synchronization algorithm is proposed in this paper. It combines the advantages of both decreasing step-size and constant step-size algorithms, meanwhile, a bidirectional search method is introduced into the new algorithm to accelerate the tracking speed. Simulation results show that the new algorithm has a better performance in convergence speed and precision, while its computational cost is almost changeless.