Title :
A subspace tracking algorithm using the fast Fourier transform
Author :
Cooley, James W. ; Toolan, Timothy M. ; Tufts, Donald W.
Author_Institution :
Dept. of Electr. Eng., Univ. of Rhode Island, Kingston, RI, USA
Abstract :
E.C. Real et al. have presented an algorithm for fast tracking of a signal subspace or interference subspace for application in adaptive detection or estimation (see ICASSP ´97; IEEE Trans. Sig. Processing, vol.47, p.1036-45, 1999). For cases in which the signal matrix is formed from a single-channel discrete-time signal, we show how one can further reduce computation in the fast approximate subspace tracking (FAST) algorithm by using the fast Fourier transform.
Keywords :
adaptive estimation; adaptive signal detection; approximation theory; discrete time systems; fast Fourier transforms; interference (signal); singular value decomposition; tracking; SVD; adaptive detection; adaptive estimation; fast Fourier transform; fast approximate subspace tracking algorithm; interference subspace tracking algorithm; signal matrix; signal subspace tracking algorithm; single-channel discrete-time signal; singular value decomposition; Adaptive signal detection; Convolution; Discrete Fourier transforms; Displays; Fast Fourier transforms; Fourier transforms; Interference; Matrix decomposition; Signal processing algorithms; Singular value decomposition;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.819352
