Tirza Routtenberg

In this paper, we consider non-Bayesian periodic parameter estimation and present a new class of mean-cyclic-error (MCE) lower bounds based on integral transform of the likelihood-ratio (LR) function. The MCE bounds in this class are valid for any cyclic-unbiased estimator, in the Lehmann sense, with uniform cyclic performance. Based on the general class of MCE bounds, we propose a novel MCE bound, which utilizes the periodic nature of the problem via the kernel of Fourier series. The proposed bound is based on discrete samples of the LR function in both the frequency and parameter domains and is shown to be tractable and useful for periodic parameter estimation. The proposed bound is compared to the MCE of the maximum-likelihood estimator and to existing MCE bounds in the problem of frequency estimation.