Adaptive Broadband Array Beamforming with Multiple-Beam Constraints
Date Issued
2007
Date
2007
Author(s)
Jung, Guo-Wei
DOI
zh-TW
Abstract
By adjusting weights, adaptive antenna array can suppress interference and noise while receiving a signal from a specific angle. However, the performance of antenna array may be highly degraded if there are uncertainties in array. In this thesis, we consider some uncertainties including array element position perturbations and mutual coupling effects. We focus on correcting these effects when using broadband uniform linear array, broadband uniform circular array, and GSC.
In this thesis, we use broadband noise-subspace projection method to correct the problem caused by the uncertainties. In this method, we use the eigen-decomposition of spectral density matrix and a gradient method to update the steering vector of antenna array iteratively. According to the simulation results, our method performs better than Diagonal Loading and Optimum Diagonal Loading.
Subjects
寬頻
陣列
波束成型
Boradband
Array
Beamforming
Type
thesis
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