DocumentCode :
2947161
Title :
Method for direction of arrival estimation of uncorrelated wideband signals based on sparse covariance fitting
Author :
Pejoski, Slavche ; Kafedziski, Venceslav
Author_Institution :
Fac. of Electr. Eng. & Inf. Technol., Univ. Cyril & Methodius, Skopje, Macedonia
fYear :
2013
fDate :
26-28 Nov. 2013
Firstpage :
408
Lastpage :
411
Abstract :
We propose a new direction of arrival estimation method for wideband uncorrelated signals. The wideband signals are first decomposed into narrowband signals. A group sparse Lasso formulation is proposed that jointly fits the powers of the signals using overcomplete dictionaries of the directions of arrival, into the estimated covariance matrices for all narrowband signals. Then, we analyze the problem formulation and propose a new formulation that determines the regularization parameters and becomes the group Lasso formulation. We compare the performance of the proposed method to the conventional methods.
Keywords :
covariance matrices; direction-of-arrival estimation; direction of arrival estimation method; estimated covariance matrices; group sparse Lasso formulation; narrowband signal decomposition; overcomplete dictionaries; regularization parameters; sparse covariance fitting; uncorrelated wideband signals; Arrays; Covariance matrices; Direction-of-arrival estimation; Estimation; Narrowband; Noise; Wideband; COMET; Direction of arrival; covariance fitting; estimation; group sparse Lasso; wideband signals;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Telecommunications Forum (TELFOR), 2013 21st
Conference_Location :
Belgrade
Print_ISBN :
978-1-4799-1419-7
Type :
conf
DOI :
10.1109/TELFOR.2013.6716255
Filename :
6716255
Link To Document :
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