Array Calibration And Its Application In PHS Base Stations

Super-resolution parameters estimation has a very high resolution performance under ideal conditions, but this sort of algorithms needs accurate known array manifold. When the array manifold has errors, the resolution performance of this sort of algorithms would decrease badly. So in the project application, the influence of array errors must be considered.This thesis theoretically analyzes the influence of the array error to the MUSIC algorithm and the LCMV beamforming algorithm, then proposes a method of array calibration of the antennas' amplitude-phase errors and position estimation under the near-field source situation, lastly introduces a method of self-calibration and two simple methods of uniform array calibration.The main problems of the base stations of PHS in actual application are the antenna array's amplitude-phase errors, position error and the CFO and synchronization problems due to the mobile stations and the base stations. The thesis gives out the estimation methods based on the above errors and introduces the specific processes of using ADSP to realize the CFO and synchronization estimation.