Reduced variance spectral estimation through overlapped filter banks

Author

Sreenivasulu Reddy, T. ; Reddy, T. Sreenivasulu ; Varadarajan, S.

Author_Institution

Dept of EEE, S.V.U. Coll. of Eng., Tirupati

fYear

2008

fDate

1-3 Dec. 2008

Firstpage

1

Lastpage

6

Abstract

This paper proposes a new non-parametric method to estimate the power spectral density using filter banks through polyphase approach. The performance of proposed method is investigated for a simulated broadband and narrowband signals. The proposed method reduces the variance without adversely affecting the resolution. The variance reduction is observed to be more in case of narrowband signals. The proposed method has the computational cost similar to modified periodogram approach.

Keywords

channel bank filters; signal resolution; spectral analysis; broadband signals; narrowband signals; nonparametric method; overlapped filter banks; polyphase approach; power spectral density; spectral estimation; variance reduction; Autocorrelation; Computational modeling; Design engineering; Filter bank; Finite impulse response filter; Fourier transforms; Narrowband; Power engineering and energy; Signal resolution; Spectral analysis; P^th order spline FIR filter; Spectral estimation; bias; broad and narrow band signals; modified-periodogram; non parametric; polyphase approach; resolution; uniform filter banks; variance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Design, 2008. ICED 2008. International Conference on

Conference_Location

Penang

Print_ISBN

978-1-4244-2315-6

Electronic_ISBN

978-1-4244-2315-6

Type

conf

DOI

10.1109/ICED.2008.4786655

Filename

4786655