Wideband maximum likelihood direction finding and signal parameter estimation by using the tree-structured EM algorithm

Author

Arikan, Orhan

Volume

47

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

201

Lastpage

206

Abstract

The expectation maximization (EM) algorithm is presented for the case of estimating direction of arrivals of unknown deterministic wideband signals. Alternative regularized least squares estimation techniques for the required signal estimation and a tree structure for the data mapping in the EM algorithm are proposed. Extensive simulation results are presented for comparison of the proposed algorithms with the conventional EM approach and the current high-resolution methods of wideband direction finding

Keywords

array signal processing; direction-of-arrival estimation; maximum likelihood estimation; tree data structures; data mapping; deterministic wideband signals; direction of arrivals; expectation maximization; regularized least squares estimation; signal estimation; signal parameter estimation; tree structure; tree-structured EM algorithm; wideband maximum likelihood direction finding; Direction of arrival estimation; Least squares approximation; Maximum likelihood estimation; Narrowband; Parameter estimation; Sensor arrays; Signal mapping; Signal processing; Signal processing algorithms; Wideband;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.738252

Filename

738252