Joint Parameter Estimation of Two-Dimensional Angle/Delay/Polarization for Multipath Channels

In this paper, a novel method is proposed for joint two-dimensional angle, delay and polarization estimation in multipath channels. A uniform planar array of crossed dipoles is employed to measure the signals of arrival. Unlike those previous joint estimation methods that only involve angle/delay or angle/polarization or one-dimensional angle/delay/polarization, the method can effectively estimate elevation, azimuth, delay and polarization via the shift invariance structure of ESPRIT algorithm and based on polarization diversity. Also, it avoids peak search and reduces the computational cost. The method can be applied in time-division system in which the paths are close spatially. The obtained space-time channel parameters are helpful for accurate three-dimensional (3-D) wireless localization. The simulations show that the use of the proposed method can provide high-resolution estimates.