LETTER
Robust estimators for frequency offset of OFDM in non-Gaussian noise
2011 Volume 8 Issue 17 Pages 1412-1418
Details
2011 Volume 8 Issue 17 Pages 1412-1418
This paper addresses robust estimation for the frequency offset of orthogonal frequency division multiplexing in non-Gaussian noise channels. We first propose a maximum-likelihood (ML) estimator in non-Gaussian noise modeled as a complex isotropic Cauchy process, and then present a simpler, yet still robust, estimator based on the ML estimator. From numerical results, it is confirmed that the proposed estimators offer a substantial performance improvement over the conventional estimators in non-Gaussian noise channels.
