Self-tuning sub-sample delay estimator

In this paper a novel solution of a self-tuning time delay estimator operating in the discrete time domain on a sinusoidal signal is presented. The proposed solution is based on a concept of series connection of a fractional delay filter and linear-phase Hilbert transform filter. The novelty of this solution lies in a very low numerical complexity, smaller than presented in hitherto published results. The performance of our self-tuning time delay estimator is analysed and illustrated by the results of its operation in presence of noise.