Azimuth Spread Estimation for Slightly Distributed Scatterers Using the Generalized Array Manifold Model

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

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Yin, Xuefeng; Fleury, Bernard H.; Pedersen, Troels (Information and Signals Division, Department of Communication Technology, Aalborg University, 9220 Aalborg, Denmark)
Nuutinen, Jukka-Pekka (Elektrobit Testing Oy, Tutkijantie 7, 90570 Oulu, Finland)

In this paper, an azimuth spread estimator (ASE) for slightly distributed scatters (SDSs) is derived based on the generalized-array-manifold (GAM) approximation model. To improve the performance of this estimator we propose an array size adaptation (ASA) technique that adjusts the array aperture selectively for each SDS by modifying the number of antennas. This technique is applied to uniform linear arrays but can be extended to two or three dimensional arrays. Simulation results demonstrate the improvement achieved with the combined ASA-ASE scheme. In particular, it is shown that this scheme outperforms the conventional Spread-ESPRIT technique.