A Novel Carrier Frequency Offset Estimation for OFDM-based IEEE802.11a

Z. Zhao and S. Lee (PRC)


Synthetic carrier frequency offset estimation, OFDM, IEEE802.11a, preamble structure


This paper presents a novel carrier frequency offset estimation (CFO) for orthogonal frequency division multiplexing (OFDM)-based IEEE802.11a. Compared with previous methods, we integrate a synthetic estimation scheme according to the preamble structure of OFDM symbols for IEEE802.11a. The performance shows that this estimator not only has less quadratic mean error and better convergent characteristics than the previous approaches, but also effectively extends the acquisition range of the carrier frequency offset estimation without improving the estimation error.

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