A Robust Spline Adaptive Filter
An adaptive filter and self-adaptive technology, applied in the direction of digital adaptive filter, adaptive network, electrical components, etc., can solve the problems of inestimable nonlinear system and deterioration of adaptive filter filtering effect, and achieve strong sticky effect
Active Publication Date: 2021-04-23
苏州容润通信技术有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In reality, in the actual nonlinear distortion situation, in addition to the interference of additive Gaussian white noise, the instrument or communication equipment sometimes also receives the interference of impulse noise. In this case, the impulse noise will make the sample The filtering effect of the adaptive filter is significantly deteriorated (in the adaptive filter literature, the adaptive filter with the ability to resist pulse interference is called robust), and it is even impossible to estimate the unknown nonlinear system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0021] In this embodiment, the performance of the spline robust adaptive filter disclosed in the present invention is verified by means of computer experiments. In the experiment, the robust spline adaptive filter disclosed by the present invention is used to identify the unknown nonlinear system in the environment of impulse noise interference, and its performance is compared with that of the spline adaptive filter in the literature. The spline adaptive filter in the document [Scarpiniti M, Comminiello D, Parisi R, Uncini A.Nonlinear spline adaptive filtering, Signal Procesing, 2013, 93(4):772-783] is denoted as SAF, and the robust The spline adaptive filter is denoted RSAF.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a robust spline adaptive filter, which belongs to the field of digital filter design. The spline adaptive filter uses spline function to approximate the optimal nonlinear unknown system, and uses the method of calculating the sign of the error signal to enhance the ability of anti-pulse interference. The spline adaptive filter can be used in occasions where electronic, speech and communication systems are interfered by nonlinear distortion and impulse noise.
Description
technical field [0001] The invention discloses a robust spline adaptive filter, which belongs to the field of digital filter design. Background technique [0002] Adaptive filtering has been widely used in the fields of channel equalization, noise elimination, noise control and so on. Many problems of adaptive filtering can be summarized as system identification problems, but in practical applications, there are often nonlinear distortions, and some nonlinear adaptive filters are proposed to solve the problem, such as the Volterra adaptive filter (VAF), Function Link Adaptive Filter (FLAF), Spline Adaptive Filter (SAF) [Scarpiniti M, Comminiello D, Parisi R, Uncini A.Nonlinear spline adaptive filtering, Signal Proceing, 2013, 93(4) :772–783] and so on, where the spline adaptive filter has a control point vector, which can make the spline control point simulate and approach nonlinear distortion through iteration, so that the unknown system can be well estimated. [0003] In...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H03H21/00
CPCH03H21/0043H03H2021/0094
Inventor 倪锦根周楠
Owner 苏州容润通信技术有限公司