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A subspace tracking algorithm using the fast Fourier transform

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3 Author(s)
J. W. Cooley ; Dept. of Electr. Eng., Univ. of Rhode Island, Kingston, RI, USA ; T. M. Toolan ; D. W. Tufts

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.

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IEEE Signal Processing Letters  (Volume:11 ,  Issue: 1 )