Title :
Estimating coupled harmonics in additive and multiplicative noise
Author :
Zhou, Guotong ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
Abstract :
Coupled harmonics indicate the presence of nonlinearities. Existing bispectral detectors of phase coupling in additive Gaussian noise are shown to require averaging over independent records, while single records are sufficient for frequency coupling. Novel bispectral and cyclic approaches are also derived for detection and estimation of phase and frequency coupled harmonics observed in stationary additive and multiplicative noise regardless of their distributions
Keywords :
harmonic analysis; parameter estimation; random noise; signal detection; spectral analysis; additive Gaussian noise; bispectral approach; bispectral detector; coupled harmonics; cyclic approach; detection; estimation; frequency coupled harmonics; frequency coupling; nonlinearities; phase coupled harmonics; phase coupling; stationary additive noise; stationary multiplicative noise; Additive noise; Couplings; Electroencephalography; Frequency estimation; Gaussian noise; Linear systems; Phase detection; Phase estimation; Phase frequency detector; Phase noise; Plasma applications;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342372
