  Frequency Estimation of a complex exponential is a problem relevant to a
large number of fields. In this paper a computationally efficient and accurate
frequency estimator is presented using the guaranteed stable Sliding DFT which
gives stability as well as computational efficiency. The estimator approaches
Jacobsen's estimator and Candan's estimator for large N with an extra
correction term multiplied to it for the stabilization of the sliding DFT.
Simulation results show that the performance of the proposed estimator were
found to be better than Jacobsen's estimator and Candan's estimator.
