Abstract: The problem of recursive filtering for linear discrete-time systems with uncertainties is considered. A new suboptimal filtering algorithm is herein proposed. It is based on the fusion formula, which represents an optimal mean-square linear combination of local Kalman estimates with weights depending on cross-covariances between local filtering errors. In contrast to the optimal weigh...

This paper describes a combination of a Weaver mixer and an N-path filter for a superheterodyne receiver with a reconfigurable frequency plan. It uses an N-path topology driven with two different frequencies, effectively realizing a frequency shift together with band-pass filtering. To reduce transfers via harmonics other than the fundamental, a harmonic rejection scheme is used. A 28 nm FDSOI ...

the grace mission has provided scientific community time-variable gravity field solutions with high precision and on a global scale. the grace mission was launched on march 2003. this mission consists of two satellites that pursue each other in their orbit. distance between two satellites in orbit is measured continuously to an accuracy of better than 1 micron using kbr system placed in satelli...

In this paper, the implementation of an adaptive least-mean-square (LMS) algorithm has been proposed to remove the 50/60Hz noise from an electrocardiogram (ECG) signal. The simulation is performed using Matlab. The ECG signal together with noise has been generated by writing a program. There is noticeable improvement in the filtered ECG in comparison to the unfiltered ECG signal in terms of pow...

In this paper we propose a postprocessing technique for a spectrogram diffusion based harmonic/percussion decomposition algorithm. The proposed technique removes harmonic instrument leakages in the percussion enhanced outputs of the baseline algorithm. The technique uses median filtering and an adaptive detection of percussive segments in subbands followed by piecewise signal reconstruction usi...

Harmonic separation plays an important role in power quality research due to the harmful impact to power system and electric apparatus. The accurate separation of harmonics is also the demand for filtering. This paper models the problem of harmonic separation as a blind source separation (BSS) task and the paper presents an algorithm called independent component analysis, which is widely used i...

Abstract In this paper a promising novel output voltage filtering concept for multi-cell switch-mode power amplifiers is analyzed. The proposed hybrid filtering concept is based on a passive LC filter enhanced by a linear-mode correction stage of small rated power. Using this principle, also "sub-harmonic" (i.e. low-frequency) switching noise distortions (typically appearing in real interleaved...

In this paper, a new Voicing Cut-Off Frequency (VCO) estimation method based on inverse filtering is presented. The spectrum of residual signal got from inverse filtering is split into sub-bands which are clustered into two classes by using K-means algorithm. And then, the Viterbi algorithm is used to search a smoothed VCO contour. Based on this new VCO estimation method, an adaptation of Harmo...

The problem of separating a mixture of periodic signals into its constituent components occurs in sound detection, biomedical signal processing, and in communications. Existing approaches to solving it are either based on harmonic selection in the frequency domain or on linear comb filtering in the time-domain. In this paper, the recently proposed matrix algebraic separation approach is analyze...