Comparison of two techniques for attenuation of narrow-band interference in spread-spectrum communication systems

Michael A. Soderstrand, W. Kenneth Jenkins

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A new adaptive notch filter based on the complex heterodyne approach achieves better performance than a similar filter designed using the popular Gray-Markel all-pass lattice circuit. Both adaptive filters make use of a simple second-order FIR adaptive filter using the LMS algorithm to detect the narrow-band interference. The Gray-Markel filter is tuned to the narrow-band interference by adjusting one parameter in the lattice circuit, while the complex heterodyne filter is fixed with the heterodyne frequency adjusted to the narrow-band interference. The new adaptive filter is able to respond to changes in the narrow-band interference frequency more quickly and provides better attenuation during the transition than does the popular Gray-Markel filter.

Original languageEnglish (US)
Title of host publication2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference Proceedings
Pages1026-1029
Number of pages4
DOIs
StatePublished - Dec 1 2007
Event2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference - Montreal, QC, Canada
Duration: Aug 5 2007Aug 8 2007

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Other

Other2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference
CountryCanada
CityMontreal, QC
Period8/5/078/8/07

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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