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A computationally efficient method for 2D direction-of-arrival (DOA) estimation of coherently distributed source is presented. The key idea is to construct second-order statistics calculated analytically based on the Schur-Hadamard product steering vector. So a closed form solution to 2D DOA estimation can be derived, which does not involve any eigendecomposition or singular value decomposition as...
A new ESPRIT-like algorithm is proposed for the estimation of the central direction of arrival (DOA) of a single distributed source. It is showed that the two signal subspaces are related by a rotation matrix, which can be used to estimate the central DOA. The so-obtained DOA estimate does not depend on any assumption on the spatial distribution of the source and is hence robust to mismodeling. For...
Beamspace propagator method is suggested to estimate the central direction of arrival and angular spread for distributed source jointly. Especially for coherently distributed source, when the deterministic angular signal density is uniform, the nominal steering vector is deduced to subject to Vandermonde matrix. The proposed method is a possible alternative to conventional propagator method to estimate...
In MIMO channel, the presence of scatters results in angular spread. The point source model corresponding to discrete direction of arrival (DOA) becomes restrictive and leads to DOA estimation errors. To compensate for this effect, the distributed source model is proposed. A first order Taylor series expansion of the steering vector is derived, which is similar to the point source model. The proposed...
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