A Novel Approach for Joint Angle and Delay Estimation in DS-CDMA Systems
Liao Gui · Dianzi xuebao · 2002
This paper presents a novel method for jointly estimating the direction of arrival (DOA) and time delay of each multipath of the desired user in a DS CDMA system.The respective spectra of the square of the desired user and MAI components at the matched filter output are different.After pre processing the spatial covariance matrixes at each frequency,we propose the 2D unitary ESPRIT algorithm as our estimator which provides closed form as well as automatically paired DOA and time delay estimates.The approach presented herein can give accurate estimates even under near far conditions at low computation cost.