Summary
International Symposium on Antennas and Propagation
2010
Session Number:1SC01
Session:
Number:1SC01-1
Eigenvalues and Eigenvectors in Array Antennas ? Optimization of Array Antennas for High Performance
Nobuyoshi Kikuma,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
The main factor to deteriorate the quality of the desired signal in the wireless communications is a frequency selective fading due to multipath propagation and co-channel interference. Therefore, the spatial signal processing technology using the array antenna has been one of the important approaches for improving the communication quality. In addition, this technology plays an effective role in the MIMO system. Therefore, this short course expresses the optimization of the array antenna for its high performance by explaining the significance of eigenvalues and the eigenvectors of various matrices used in the array antenna. Particularly, we pay fundamental attention to a gain of the array antenna, optimum weights of adaptive arrays, and the estimation methods of direction of arrival (DOA) of the incident waves as some typical examples of the eigenvalues and the eigenvectors in the array antenna. Through these demonstrations, the optimization of array antennas is discussed.