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Joint angle and delay estimation using shift-invariance properties

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3 Author(s)
van der Veen, A.-J. ; Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands ; Vanderveen, M.C. ; Paulraj, A.J.

Assuming a multipath propagation scenario, we derive a closed-form subspace-based method for the simultaneous estimation of arrival angles and path delays from measured channel impulse responses, using knowledge of the transmitted pulse shape function and assuming a uniform linear array and uniform sampling. The algorithm uses a two-dimensional (2-D) ESPRIT-like shift-invariance technique to separate and estimate the phase shifts due to delay and direction-of-incidence, with automatic pairing of the two parameter sets. A straightforward extension to the multiuser case allows to connect rays to users as well.

Published in:

Signal Processing Letters, IEEE  (Volume:4 ,  Issue: 5 )