DOA estimation in a multipath environment using covariance differencing and iterative Forward and Backward spatial smoothing

Author

Ray, K.P. ; Kulkarni, R.K. ; Kasyap Ramkrishnan, B.

Author_Institution

SAMEER, Mumbai

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

794

Lastpage

796

Abstract

There has been an effort to reduce the number of sensor elements in smart antennas used to estimate the direction of arrival in multipath environment. This paper proposes use of the DOA estimation based on two stages of detection: a first stage for discriminating uncorrelated signals, and a second stage for resolving the directions of arrival of correlated signals using covariance differencing and iterative spatial smoothing using forward/backward spatial smoothing.

Keywords

adaptive antenna arrays; correlation methods; covariance matrices; direction-of-arrival estimation; iterative methods; signal detection; smoothing methods; DOA multipath environment; correlated signal detection; covariance matrix differencing method; direction-of-arrival estimation; iterative forward-backward spatial smoothing method; smart antenna; uncorrelated signal detection; Additive white noise; Computational efficiency; Covariance matrix; Direction of arrival estimation; Multiple signal classification; Phased arrays; Sensor arrays; Signal resolution; Smoothing methods; Spatial resolution; Coherent signals; Forward spatial smoothing; Forward-Backward spatial smoothing; direction-of-arrival (DOA) estimation; iterative spatial smoothing;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4763086

Filename

4763086