NDLI: Wholly estimating direction of arrival of convolutively mixed sources using independent component analysis

Content Provider	IEEE Xplore Digital Library
Author	Weidong Jiao Yongping Chang
Copyright Year	2009
Description	Author affiliation: Department of Mechanical Engineering, Jiaxing University, Jiaxing 314001, China (Weidong Jiao; Yongping Chang)
Abstract	A class of methods is presented for wholly estimating direction of arrival (DOA) of convolutively mixed sources in the frequency domain, which is based on independent component analysis (ICA). Convolutive mixtures of multiple sources in the spatio-temporal domain are firstly reduced to instantaneous mixtures by using the well-known short-time Fourier transformation (STFT) technique. From the time-frequency mixture in each frequency bin, one frequency respond matrix of the mixing system from sources to sensors is identified by some instantaneous ICA algorithms. Furthermore, DOAs of the multiple sources is estimated by using a whole estimating strategy. Consequently, all mixtures in total frequency bins contribute to a final estimation set, in which the source directions are shown as several direction clusters and/or local maxima. Experimental results indicate that the ICA based methods have some advantages over the well-known MUSIC (MUltiple SIgnal Classification) method not only on estimation precision of multiple source directions, but also on potential applicability under some especial conditions.
File Size	238219
File Format	PDF
ISBN	9781424438631
DOI	10.1109/ICEMI.2009.5274626
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Independent component analysis Frequency estimation MUSIC (MUltiple SIgnal Classification) Multiple signal classification Frequency measurement Mechanical engineering Frequency domain analysis Sensor arrays whole estimation strategy independent component analysis (ICA) Frequency response Direction of arrival estimation frequency response identification Higher order statistics direction of arrival (DOA)
Content Type	Text
Resource Type	Article

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