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Low-complexity estimators for distributed sources

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2 Author(s)
Bengtsson, M. ; Dept. of Signals, Sensors, & Syst., R. Inst. of Technol., Stockholm, Sweden ; Ottersten, B.

In antenna array applications, the propagation environment is often more complicated than the ordinarily assumed model of plane wavefronts. Here, a low-complexity algorithm is suggested for estimating both the DOA and the spread angle of a source subject to local scattering, using a uniform linear array. The parameters are calculated from the estimates obtained using a standard algorithm such as root-MUSIC to fit a two-ray model to the data. The algorithm is shown to give consistent estimates, and the statistical performance is studied analytically and through simulations

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Signal Processing, IEEE Transactions on  (Volume:48 ,  Issue: 8 )