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Statistical Analysis of a Simple Constrained High-Order Yule-Walker Tone Frequency Estimator
Yegui XIAO Yoshiaki TADOKORO
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/10/25
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
tone frequency estimator, constrained high-order Yule-Walker equations, statistical analysis, autocorrelation coefficients,
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In this work, a statistical analysis is performed for a simple constrained high-order Yule-Walker (YW) tone frequency estimator obtained from the first equation of the constrained high-order YW equations. Explicit expressions for its estimation bias and variance are efficiently derived by virtue of a Taylor series expansion technique. Especially, being explicit in terms of frequency, data length and Signal-to-Noise Ratio (SNR) value, the resulting bias expression can not be obtained by using the asymptotic analyses used for the parameter estimation methods. The obtained expressions are compared with their counterparts of the Pisarenko tone frequency estimator. Simulations are performed to support the theoretical results.