Title :
Error saturation effects in the LMS adaptive line enhancer-transient response
Author :
Florian, S. ; Bershad, N.I.
Author_Institution :
Dept. of Electr. Eng., California Univ., Irvine, CA, USA
fDate :
11/1/1989 12:00:00 AM
Abstract :
Digital implementation of the least-mean-square (LMS) adaptive line enhancer (ALE) introduces certain nonlinear effects. An investigation is conducted into the effects of feedback error signal saturation on the ALE adaptation. A set of nonlinear coupled difference equations is derived by projecting the mean weight vector onto a set of orthogonal basis functions. These equations are used to study the transient behavior of the ALE for the case of one and two sinusoids in broadband noise. Simulations are presented which support the results of the theoretical model
Keywords :
adaptive filters; error analysis; filtering and prediction theory; signal processing; transient response; LMS adaptive line enhancer; error saturation effects; feedback error signal saturation; least-mean-square; mean weight vector; nonlinear coupled difference equations; orthogonal basis functions; sinusoids in broadband noise; transient response; Adaptive filters; Adaptive signal processing; Convergence; Feedback; Finite impulse response filter; Least squares approximation; Line enhancers; Signal processing algorithms; Speech processing; Steady-state;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
