Single-tone frequency estimation using modified autocorrelation and polynomial root-finding

Hong-Cheng Liang, Hing Cheung So

Abstract: Highlights•Novel expressions for autocorrelation are proposed.•Chebyshev recurrence is utilized to construct a high-degree polynomial.•Theoretical variance of the proposed estimator is derived.•An efficient method is devised to determine the best estimate.•Nearly-optimal performance of the proposed method is demonstrated.