Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115800
