Efficient method for carrier offset correction on OFDM system

摘要

In this work, we present a simple approach to estimate and correct the carrier offset in an orthogonal frequency division multiplexing (OFDM) system. The approach leads to a computationally and statistically efficient estimator for the carrieroffset. Computer simulations verily that the estimation accuracy is comparable to the Cramer-Rao bound (CRB). We demonstrated that by incorporating the estimated carrier offset (obtained using reasonable frames of OFDM data) in the demodulation process,the hit-error-rate (BER) can approach that of the ideal OFDM system with no carrier offset.