Fine resolution frequency estimation of a single-tone complex sinusoidal signal in the additive white Gaussian noise is of importance in many fields. In this paper, a generic analytical expression is proposed to refine the residual of a dichotomous search, leading to an estimator with much less iterations than the conventional dichotomous search estimator. Compared with other existing estimators, the proposed estimator has a better trade-off between performance and computational complexity. Simulation results demonstrate that the root-mean-square error (RMSE) of the proposed estimator is closer to the Cramer-Rao lower bound (CRLB) than other estimators over the whole frequency interval when the signal-to-noise ratio (SNR) is above a threshold.
|Journal||Modern Physics Letters B|
|Publication status||Published - 30 Dec 2018|
|Event||3rd International Conference on Materials Science and Nanotechnology: ICMSNT - Chengdu, China|
Duration: 29 Mar 2018 → 1 Apr 2018