N. Yuen et B. Friedlander, DOA ESTIMATION IN MULTIPATH - AN APPROACH USING 4TH-ORDER CUMULANTS, IEEE transactions on signal processing, 45(5), 1997, pp. 1253-1263
We consider the problem of direction of arrival (DOA) estimation in th
e presence of multipath propagation, The sensor elements are assumed t
o be linear and uniformly spaced. To perform DOA estimation, we combin
e two existing algorithms which are often used for other purposes. The
first algorithm exploits fourth-order cumulants to perform blind esti
mation of the steering vectors and the second algorithm estimates the
directions of arrival using the estimated vectors, We refer to this tw
o step approach as the SV-DOA estimation algorithm. We also present an
algorithm independent performance analysis for the DOA estimation pro
blem based on fourth order cumulants. We summarize the algorithms here
in and present Monte-Carlo simulations demonstrating the effectiveness
of the SV-DOA algorithm as well as verifying the performance analysis
using an optimal (but computationally expensive) DOE estimation algor
ithm.