Title :
Estimation of correlated frequencies in noise cancelling using higher order moments
Author :
Servière, Christine ; Baudois, Daniel ; Silvent, André
Author_Institution :
Centre d´´Etudes des Phenomenes Aleatoires et Geophys., Saint-Martin d´´Heres, France
Abstract :
A method to identify a linear filter in the case of noise cancelling when two correlated frequencies are present both in signal and noise reference is proposed. This method uses the third-order moments of the observations. The statistical properties of the estimated filter (bias and variance computed near convergence) are studied, and it is proved that the variance is independent of the presence of a sinusoid in the signal
Keywords :
filtering and prediction theory; interference suppression; parameter estimation; bias; correlated frequencies; estimation; higher order moments; linear filter; noise cancelling; statistical properties; third-order moments; variance; Additive noise; Convergence; Decorrelation; Discrete Fourier transforms; Frequency estimation; Noise cancellation; Nonlinear filters; Random processes; Signal processing; Transversal filters;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150231
