Improved Variant of Pisarenko Harmonic Decomposition for Single Sinusoidal Frequency Estimation

Kenneth Wing-Kin LUI  Hing-Cheung SO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E90-A   No.11   pp.2604-2607
Publication Date: 2007/11/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e90-a.11.2604
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
frequency estimation,  fast algorithm,  Pisarenko harmonic decomposition,  

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It is well known that Pisarenko's frequency estimate for a single real tone can be computed easily using the sample covariance with lags 1 and 2. In this Letter, we propose to use alternative covariance expressions, which are inspired from the modified covariance (MC) frequency estimator, in Pisarenko's algorithm. Computer simulations are included to corroborate the theoretical development of the variant and to demonstrate its superiority over the MC and Pisarenko's methods.