Smart Antenna Technology And The Study Of DOS Estimation

This thesis first discusses the reason of introducing the technology of smart antenna from the angle of increasing the system capacity. Further, it introduces the theory, advantages of smart antenna and its evolution, and criteria and algorithms of the beamforming technology. The focal point of this thesis was focus on the study and stimulation of Direction Of Arrival (DOA) Estimation Technology, including the algorithms based on the subspace decomposition and its improves, and a algorithm based on fourth-order cumulant. Finally, a dynamic access system was simulated by using the algorithm based on DOA Estimation, the results of simulations verify the performance of smart antenna in single-cell ideal environment, and discusses the deficiency of the work and the improving way.