Performance analysis of the adaptive line enhancer with multiple sinusoids in noisy environment

Authors:
R. L. Campbell, Jr.;N. H. Younan;J. Gu
Affiliations:
Information Technology Laboratory, U.S. Army Corps of Engineers, Vicksburg, MS;Department of Electrical and Computer Engineering, Mississippi State University, Box 9571, Mississippi State, MS;Department of Electrical and Computer Engineering, Mississippi State University, Box 9571, Mississippi State, MS 39762-9571, USA and Ansoft Corporation, 669 River Drive, Suite 200, Elmwood park, N ...
Venue:
Signal Processing
Year:
2002

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Abstract

In this paper, the performance analysis of the adaptive line enhancer when the input signal consists of multiple sinusoids embedded in noise is investigated. The performance is evaluated in terms of the signal-to-noise ratio gain at the filter's output. It is shown that, for multiple sinusoids, this gain is not only a function of the filter length, but also of three additional factors -- the number of sinusoids, the noise power, and the amplitude of each sinusoid. Simulation results for a dual noisy sinusoidal input are presented to illustrate the validity of this analysis.