OFDM Carrier Frequency Offset Estimation Using Null Subcarriers


In this paper we present two extensions to a previously published OFDM carrier frequency-offset estimation method. The previously presented algorithm is based on locating the spectral minimas within so-called null or virtual subcarriers embedded in the spectrum. In this paper we develop this idea further by using a steepest descent method to find the minima and the estimate. We also study the estimator performance in an environment with a frequency selective channel.

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@inproceedings{Olsson2005OFDMCF, title={OFDM Carrier Frequency Offset Estimation Using Null Subcarriers}, author={Mattias Olsson}, year={2005} }