A Robust Timing Recovery Algorithm for OFDM Systems

The authors propose a new robust timing recovery algorithm with small symbol timing jitter for Orthogonal Frequency-Division Multiplexing (OFDM) systems. The concept of coarse FFT window selection and adaptive reference pilot generation are employed in this paper. This proposed scheme avoids Inter-Symbol Interference (ISI) as well as Delayed Locked Loop (DLL) tracking failure over frequency selective time-varying channels. In addition, the proposed algorithm has much smaller and smoother steady state DLL tracking error than the conventional algorithm.