Title :
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
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; Pth order spline FIR filter; Spectral estimation; bias; broad and narrow band signals; modified-periodogram; non parametric; polyphase approach; resolution; uniform filter banks; variance;
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
DOI :
10.1109/ICED.2008.4786655
