DocumentCode :
703230
Title :
Adaptive separation of sources and estimation of their directions of arrival
Author :
Macchi, Odile ; Malouche, Zied
Author_Institution :
Lab. des Signaux et Syst., Supelec, Gif-sur-Yvette, France
fYear :
1998
fDate :
8-11 Sept. 1998
Firstpage :
1
Lastpage :
4
Abstract :
We consider array processing when the multiple sources are statistically independent narrowband signals, as in CDMA radio communications with a multisensor receiver. For a uniform linear array, a simple source separation-based criterion is proposed which jointly recovers each source on one output channel. The corresponding system has two stages whose respective parameters are the estimates of the source directions of arrival (DOA) and certain gains which constrain the output powers. The criterion involves a coupling parameter a so that all outputs recover different sources. When all the sources have negative kurtosis, the criterion minima correspond to perfect estimation of the DOA. Adaptive implementation is possible at a very low computational price. After initialization, the coupling parameter a can be cancelled, which greatly simplifies implementation. These results have been confirmed through many computer simulations.
Keywords :
array signal processing; code division multiple access; direction-of-arrival estimation; radio networks; radio receivers; sensor fusion; telecommunication channels; CDMA radio communications; DOA estimation; adaptive source separation-based criterion; computational price; coupling parameter; criterion minima; direction-of-arrival estimation; independent narrowband signals; multiple sources; multisensor receiver; negative kurtosis; output channel; uniform linear array processing; Arrays; Attenuation; Direction-of-arrival estimation; Estimation; Gain control; Narrowband; Source separation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4
Type :
conf
Filename :
7089701
Link To Document :
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