منابع مشابه
Adaptive Notch Iir Filters
Notch filters represent a method of estimating and/or tracking sinusoidal frequencies immerged in background noise. We shall refer to adaptive notch IIR filters, which make use of the RLS method. This paper presents an implementation of adaptive notch IIR filters on MOTOROLA StarCore140 DSP. We have used a modified RLS algorithm, more suitable for DSP implementation. The paper presents theoreti...
متن کاملNEW STEIGLITZ-McBRIDE ADAPTIVE LATTICE NOTCH FILTERS
Two novel adaptive notch filters are presented. The updating algorithms are based on the Steiglitz-McBride error criterion minimization and the basic realizations of the notch filters are all-pass based lattice filters. The proposed realizations represent an extension of a previous ad-hoc scheme for adaptive notch filtering and avoid finding the roots of a high order polynomial to obtain the un...
متن کاملA novel structure for cascade form adaptive notch filters
The current cascade form adaptive notch filters have two different ways to adjust its parameters. First, each section is adapted individually (AI). Second, all sections are adapted simultaneously (AS). As to the complexity of tmckingp sinusoids, the AI structure is linear with p but the AS structure is proportional to p 2. However, the AS structure has smaller bias in frequency estimates than t...
متن کاملAdaptive Harmonic IIR Notch Filters for Frequency Estimation and Tracking
In many signal processing applications, adaptive frequency estimation and tracking of noisy narrowband signals is often required in communications, radar, sonar, controls, biomedical signal processing, and the applications such as detection of a noisy sinusoidal signal and cancellation of periodic signals. In order to achieve the objective of frequency tracking and estimation, an adaptive finit...
متن کاملGeneralized Adaptive Notch Filters with Improved Tracking Capabilities
Bias (lag) errors seriously limit tracking capabilities of adaptive filters. We show that frequency biases, which arise in generalized adaptive notch filtering algorithms, can be reduced if the frequency estimates are appropriately filtered. This allows one to build estimation schemes with improved tracking capabilities.
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ژورنال
عنوان ژورنال: IET Signal Processing
سال: 2016
ISSN: 1751-9675,1751-9683
DOI: 10.1049/iet-spr.2015.0310