Performance of the 2-2 constant modulus (CM) adaptive algorithm for Rayleigh fading sinusoids in Gaussian noise

Author

Bershad, N.J. ; Roy, S.

Author_Institution

Dept. of Electr. Eng., California Univ., Irvine, CA, USA

fYear

1990

fDate

3-6 Apr 1990

Firstpage

1675

Abstract

Preliminary results for the evolution of the filter coefficients adapted by the CM (constant modulus) algorithm, assuming that the input consists of sinusoids with Rayleigh amplitude distribution in the presence of additive noise, are presented. The stationary points of the iteration and the convergence behavior are discussed assuming proper filter initialization (i.e. lock is preserved) for the particular case of a single sinusoid in noise. The convergence of the average CM algorithm weight vector is analyzed, leading to three coupled nonlinear difference equations

Keywords

convergence; difference equations; fading; interference suppression; random noise; telecommunication channels; AWGN; Gaussian noise; Rayleigh fading sinusoids; constant modulus adaptive algorithm; convergence; coupled nonlinear difference equations; Adaptive algorithm; Adaptive filters; Additive noise; Additive white noise; Algorithm design and analysis; Convergence; Couplings; Difference equations; Filters; Gaussian noise; Interference; Narrowband; Noise level; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on

Conference_Location

Albuquerque, NM

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1990.115800

Filename

115800