کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10132781 1645582 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of windowing and noise on the amplitude and phase estimators returned by the Taylor-based Weighted Least Squares
ترجمه فارسی عنوان
اثر پنجره ها و سر و صدا بر روی برآوردگرهای دامنه و فاز، توسط مقادیر کم وزنی با وزن تیلور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
This paper analyzes the effect of windowing and additive wideband noise on the estimates returned by the real-valued Taylor-based Weighted Least Squares (TWLS) algorithm when applied to noisy sine-wave with constant amplitude and phase. The Taylor's series of the signal time-varying phasor are truncated to the second order and the two-term or three-term Minimum Sidelobe Level (MSL) and Maximum Sidelobe Decay (MSD) windows are considered. Expressions for the estimation variances are derived that hold even when the sine-wave amplitude and phase exhibit slow and limited, but significant, time variations. Then they are compared with the unbiased Cramér-Rao Lower Bounds (CRLBs) for constant parameter sine-waves in order to analyze the estimator statistical efficiency. The accuracies of the derived expressions are verified through computer simulations and validated by experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Digital Signal Processing - Volume 83, December 2018, Pages 202-213
نویسندگان
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