New Technique for Attenuation of Narrow-Band Interference with Applications in Control and Communications Systems

Powerful adaptive filters for attenuation of multiple narrow-band interference in control and communications systems are implemented using a combination of multi-rate and heterodyne systems made adaptive by varying the sample rates and use of tunable heterodyne filters. A modified Kwan-Martin array...

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Bibliographic Details
Main Authors: Soderstrand, M.A., Johnson, L.G., Phillips, S.R.
Format: Conference Proceeding
Language:English
Subjects:
Adaptive filters
Adaptive systems
Attenuation
Communication system control
Control systems
Finite impulse response filter
Interference
Narrowband
Programmable control
Robustness
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Description
Summary:Powerful adaptive filters for attenuation of multiple narrow-band interference in control and communications systems are implemented using a combination of multi-rate and heterodyne systems made adaptive by varying the sample rates and use of tunable heterodyne filters. A modified Kwan-Martin array of second- order FIR filters robustly identifies up to ten narrow-band interference signals. The new adaptive multi-rate heterodyne system translates and scales the entire signal spectrum to a series of fixed notch filters that provide the attenuation. The resulting system allows for robust adaptation while attenuating the interference with minimum effect on the desired signal.
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2006.354908