Evaluation of Two Carrier Frequency Offset Estimation Algorithms in TDS-OFDM Systems

Two algorithms of carrier frequency offset coherent estimation for TDS-OFDM systems are analyzed and compared in this paper. Estimation performances in AWGN and multi-path channels are simulated. Analysis and simulations show that the algorithm based on auto-correlation has higher estimation accuracy and is not sensitive to frequency offset; the algorithm based on accumulation has lower complexity of implementation and comparable estimation accuracy under low frequency offset.