Improved phase estimation based on complete bispectrum and modified group delay

Narasimhan, SV and Mallick, Nandini Basu and Chaitanya, Ratana (2008) Improved phase estimation based on complete bispectrum and modified group delay. Signal, Image and Video Processing.

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Abstract

In this paper, a new method for extracting the system phase from the bispectrum13; of the system output has been proposed. This is based on the complete bispectral data13; computed in the frequency domain and modified group delay. The frequency domain13; bispectrum computation improves the frequency resolution and the modified group delay13; reduces the variance preserving the frequency resolution. The use of full bispectral data13; also reduces the variance as it is used for averaging. For the proposed method at a signal13; to noise ratio of 5dB, the reduction in root mean square error is in the range of 1.5 to 713; times over the other methods considered.

Item Type:	Article
Additional Information:	Copyright for this article belongs to Springer-Verlag
Uncontrolled Keywords:	Video processing;Signal processing;Image processing;Bispectrum - Modified group delay;Non-minimum phase system identification - Phase estimation
Subjects:	ENGINEERING > Electronics and Electrical Engineering AERONAUTICS > Aeronautics (General)
Depositing User:	Ms. Alphones Mary
Date Deposited:	29 Apr 2008
Last Modified:	17 Jun 2010 05:43
URI:	http://nal-ir.nal.res.in/id/eprint/4706

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