Low-complexity estimators for distributed sources

Author

Bengtsson, Mats ; Ottersten, Björn

Author_Institution

Dept. of Signals, Sensors, & Syst., R. Inst. of Technol., Stockholm, Sweden

Volume

48

Issue

8

fYear

2000

fDate

8/1/2000 12:00:00 AM

Firstpage

2185

Lastpage

2194

Abstract

In antenna array applications, the propagation environment is often more complicated than the ordinarily assumed model of plane wavefronts. Here, a low-complexity algorithm is suggested for estimating both the DOA and the spread angle of a source subject to local scattering, using a uniform linear array. The parameters are calculated from the estimates obtained using a standard algorithm such as root-MUSIC to fit a two-ray model to the data. The algorithm is shown to give consistent estimates, and the statistical performance is studied analytically and through simulations

Keywords

approximation theory; array signal processing; computational complexity; direction-of-arrival estimation; electromagnetic wave scattering; land mobile radio; linear antenna arrays; multipath channels; radiowave propagation; signal classification; statistical analysis; DOA estimation; antenna array applications; approximative model; distributed sources; local scattering; low-complexity algorithm; low-complexity estimators; mobile communications; multipath propagation; plane wavefronts; propagation environment; root-MUSIC; sensor array processing algorithms; simulations; source spread angle; standard algorithm; statistical performance; two-ray model; uniform linear array; Algorithm design and analysis; Antenna arrays; Antennas and propagation; Array signal processing; Computational complexity; Direction of arrival estimation; Downlink; Linear antenna arrays; Rayleigh scattering; Signal processing algorithms;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.851999

Filename

851999