NDLI: Suppression of multiple narrow-band interference using real-time adaptive notch filters

Content Provider	IEEE Xplore Digital Library
Author	Soderstrand, M.A. Johnson, T.G. Strandberg, R.H. Loomis Jr., H.H. Rangarao, K.V.
Copyright Year	1992
Abstract	The process of detection of narrow-band interference to a broad-band signal in a noisy environment using adaptive filtering techniques attributable to Kwan and Martin (1989) is further refined by modifying the gradient-search algorithm to reduce hardware complexity. The Kwan and Martin algorithm implies a geometric increase in hardware as the number of interferers increases. The improved method admits to only an arithmetic increase to achieve the similar results. Thus Kwan and Martin filters designed to handle 3 to 10 notches require 12.5% to 124% more hardware than the new filters. Simulations of the new method show it to be robust, functioning well in a variety of practical signal processing applications.
Sponsorship	IEEE Circuits and Systems Society
Starting Page	217
Ending Page	225
Page Count	9
File Size	262586
File Format	PDF
ISSN	10577130
Volume Number	44
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Narrowband Interference suppression Hardware Signal processing Signal processing algorithms Adaptive signal detection Noise reduction Working environment noise Adaptive filters Filtering algorithms
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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