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Robust direction of arrival estimation for CDMA signals in impulsive noise

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3 Author(s)
Chuah, T.C. ; Fac. of Eng., Multimedia Univ., Selangor, Malaysia ; Sharif, B.S. ; Hinton, O.R.

Direction of arrival estimation schemes based on multiuser detection for CDMA signals are investigated. The paper reports the performance improvements achieved by the linear decorrelator and the nonlinear M-regression decorrelator over the conventional matched filter scheme combined with the subspace-based MUSIC algorithm. The near-far resistant properties of the decorrelators show improved bearing estimation performance in the presence of strong interference. In particular, the minimax M-regression decorrelator combined with the MUSIC algorithm achieves an excellent performance trade-off by performing satisfactorily over the entire range of noise distributions, which, on the other hand, is unattainable by the ROC-MUSIC scheme.

Published in:

Communications, IEE Proceedings-  (Volume:150 ,  Issue: 2 )

Date of Publication:

Apr 2003

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