Title :
Detection and enhancement of multiple sinusoids using an adaptive filter bank structure
Author :
Petraglia, M.R. ; de Almeida Alves, I.B.H. ; Mitra, Sanjit K.
Author_Institution :
Dept. of Electron. Eng., Federal Univ. of Rio de Janeiro, Brazil
Abstract :
In this paper we investigate the use of an adaptive filter bank structure for the detection and enhancement of multiple sinusoids embedded in noise. In the proposed adaptive filter bank structure, the input signal is transformed by means of a DFT filter bank, and the transformed signals are modified by sparse adaptive subfilters. The properties of the proposed structure, such as its convergence behavior and optimal solution, when applied to the detection of multiple sinusoids, are investigated. The proposed structure is compared to the conventional FIR adaptive line enhancer structure
Keywords :
FIR filters; adaptive filters; adaptive signal detection; band-pass filters; discrete cosine transforms; filtering theory; DFT; FIR adaptive line enhancer; adaptive filter bank; convergence; multiple sinusoids; noise; optimization; signal detection; signal enhancement; sparse adaptive subfilters; Adaptive filters; Filter bank; Finite impulse response filter; Frequency; Interference; Line enhancers; Narrowband; Passband; Prototypes; Signal processing;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.518962
