Title :
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
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;
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
DOI :
10.1109/AMTA.2008.4763086
