Maximum likelihood single tone frequency estimation in a multipath channel
V.M. Baronkin, Yuriy V. Zakharov, Tim C. Tozer · IEE Proceedings - Communications · 2001
The paper considers the maximum likelihood (ML) estimation of the frequency offset of a known signal received in a multipath channel. The ML algorithm and the Cramer–Rao lower bound are derived. An estimator possessing low computational load is proposed whose accuracy performance is close to that of the ML estimator over a wide frequency acquisition range.