Robust MVDR Beamforming via Polynomial Rooting Calibration for CDMA Signals(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
This letter deals with adaptive array beamforming based on a minimum variance distortionless response (MVDR) technique with robust capabilities for code-division multiple access signals. It has been shown that the MVDR beamformer suffers from the drawback of being very sensitive to pointing error over the eigenspace-based beamformers. For the purpose of efficient estimation and calibration, a highly efficient approach has been proposed that is implemented on polynomial rooting rather than spectral searching. However, this rooting method is suboptimal in the presence of the noise and multiple access interference (MAI). In this letter, we propose an improved polynomial rooting calibration method that is robust in both of the low signal-to-noise ratio and large MAI scenarios. Several computer simulations are provided for illustrating the effectiveness of the proposed method.
- 社団法人電子情報通信学会の論文
- 2007-11-01
著者
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CHANG Ann-Chen
Department of Information Technology, Ling Tung University
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Hsu Chun
Department Of Electrical Engineering National Dong Hwa University
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Chang Ann‐chen
Ling Tung Univ. Taichung Twn
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Chang Ann-chen
Department Of Electrical Engineering Chung Cheng Institute Of Technology National Defense University
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Su Ing‐jiunn
Department Of Electrical And Electronic Engineering Chung Cheng Institute Of Technology National Def
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SU Ing-Jiunn
Department of Electrical and Electronic Engineering, Chung Cheng Institute of Technology, National D
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Su Ing-jiunn
Department Of Electrical And Electronic Engineering Chung Cheng Institute Of Technology National Def
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Hsu Chun
Department Of Electrical And Electronic Engineering Chung Cheng Institute Of Technology National Def
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