On implementation of the discrete Fourier transform-the STUSE algorithm for spectral estimation

Author

Baxa, Ernest G., Jr.

Author_Institution

Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA

Volume

37

Issue

11

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

1763

Lastpage

1765

Abstract

The discrete short-time Fourier transform implemented as the STUSE (short-time unbiased spectrum estimation) algorithm, which includes both Fourier-domain coherent smoothing and power-domain incoherent smoothing, is examined in terms of its resolution capability in power spectrum estimation. An analysis of the STUSE algorithm in terms of the effective spectral window allows insight into how the influence of the finite window length on a spectral estimate can be lessened by linearly combining biased estimates. Comparison is made to the weighted overlapped segment averaging algorithm, which has been previously characterized as a special case of the STUSE algorithm

Keywords

fast Fourier transforms; parameter estimation; spectral analysis; DFT; Fourier-domain coherent smoothing; STUSE algorithm; discrete Fourier transform; effective spectral window; finite window length; power spectrum estimation; power-domain incoherent smoothing; resolution capability; short-time unbiased spectrum estimation; spectral estimation; weighted overlapped segment averaging algorithm; Algorithm design and analysis; Data analysis; Discrete Fourier transforms; Fourier transforms; Frequency estimation; Power smoothing; Signal processing algorithms; Smoothing methods; Spectral analysis; Tail;

fLanguage

English

Journal_Title

Acoustics, Speech and Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

0096-3518

Type

jour

DOI

10.1109/29.46558

Filename

46558