On design of correlation based frequency estimators

As a complement to the periodogram, low complexity frequency estimators are of interest. Different designs of these estimators may affect the performance significantly. In this paper we consider correlation based estimators and present a design strategy that outperforms most estimators in the same class. We give a closed form expression for the asymptotic performance together with a new method of phase unwrapping to resolve an introduced frequency ambiguity. Finally, we illustrate the performance through a design example