Detection of digital signals with antenna arrays using estimation

Author

Mason, Lloyd J.

Author_Institution

Commun. Res. Centre, Ind. Canada, Ottawa, Ont., Canada

fYear

1994

fDate

25-28 Sep 1994

Firstpage

380

Abstract

The reception of signals from several users at the same frequency by an antenna array is considered and analyzed. The method of maximum likelihood is used to estimate the direction of arrival of the various signals at the array as well as to estimate the transmitted signal from each source. It is shown that by performing a QR factorization on the steering vector matrix the corresponding projection matrix takes a simple form. The modified Gram-Schmidt (1986) method for vector orthonormalization is one way to carry out the QR factorization. It is then shown by examples that good estimates of the arrival directions may be realized with sequences of simple single-variable optimizations

Keywords

antenna arrays; digital signals; direction-of-arrival estimation; matrix algebra; maximum likelihood detection; maximum likelihood estimation; sequential estimation; QR factorization; antenna arrays; digital signals detection; direction of arrival estimation; frequency; maximum likelihood method; modified Gram-Schmidt method; projection matrix; sequences; signals reception; single-variable optimizations; source; steering vector matrix; transmitted signal; vector orthonormalization; Antenna arrays; Direction of arrival estimation; Matrices; Maximum likelihood detection; Maximum likelihood estimation; Sequential estimation; Signals;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1994. Conference Proceedings. 1994 Canadian Conference on

Conference_Location

Halifax, NS

Print_ISBN

0-7803-2416-1

Type

conf

DOI

10.1109/CCECE.1994.405768

Filename

405768