Title :
Joint angle and delay estimation using shift-invariance properties
Author :
Van der Veen, Alle-Jan ; Vanderveen, Michaela C. ; Paulraj, Arogyaswami J.
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands
fDate :
5/1/1997 12:00:00 AM
Abstract :
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.
Keywords :
array signal processing; direction-of-arrival estimation; linear antenna arrays; multipath channels; phase estimation; signal sampling; transient response; 2D ESPRIT-like shift-invariance technique; angle estimation; angle of arrival estimation; channel impulse response; closed-form subspace-based method; delay estimation; multipath propagation; multiuser channels; phase shifts; shift-invariance properties; transmitted pulse shape function; uniform linear array; uniform sampling; Antenna arrays; Delay estimation; Discrete Fourier transforms; Fourier transforms; Propagation delay; Pulse measurements; Pulse shaping methods; Sampling methods; Shape measurement; Two dimensional displays;
Journal_Title :
Signal Processing Letters, IEEE