A Brief Examination of Current and a Proposed Fine Frequency Estimator Using Three DFT Samples
نویسنده
چکیده
The practice of fine frequency estimation of a single tone using the three samples around the DFT output maximizer has progressed steadily over the preceding decades. A number of authors built on the early work of Kay, Rife and Boorstyn, et al. In the middle 1990s Quinn's estimators were considered superior, but were computationally expensive for real-time processors of the day. MacLeod and Jacobsen subsequently contributed estimators at about the same time in the late 1990s. Jacobsen's offered performance similar to Quinn's with reduced complexity and a resemblance to the quadratic interpolator arrangement. Jacobsen's estimator [1] was developed heuristically and presented without derivation.
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