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On the use of beamforming for estimation of spatially distributed signals

Mikael Coldrey (Institutionen för signaler och system, Signalbehandling)
IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP '03, Hong Kong, China, APR 06-10 Vol. 5 (2003), p. 369-372.
[Konferensbidrag, refereegranskat]

In wireless communications, spatially distributed signals originate from local scattering around the transmitter. Spatially distributed signals cause conventional high-resolution methods to show degradation in performance, since the underlying data model is of full rank theoretically. In this paper, a relationship between the distribution of the spatial spread and the Power Azimuth Spectrum is derived. Using this relationship, two simple and robust estimators based on the conventional beamformer and Capon's beamformer for estimation of the nominal direction and spatial spread are found. The proposed estimators show very good performance in numerical examples.

Nyckelord: DOA, spread, spatially, distributed, signals, beamforming, antenna, array

Denna post skapades 2006-08-25. Senast ändrad 2013-06-10.
CPL Pubid: 15129


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Institutionen för signaler och system, Signalbehandling (1900-2017)


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