文章基本信息

标题：Array Calibration for CDMA Smart Antenna Systems
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作者：Kyeong, Mun-Geon ; Park, Hyung-Geun ; Oh, Hyun-Seo 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2004
卷号：26
期号：6
页码：605-605
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：In this paper, we investigate array calibration algorithms to derive a further improved version for correcting antenna array errors and RF transceiver errors in CDMA smart antenna systems. The structure of a multi-channel RF transceiver with a digital calibration apparatus and its calibration techniques are presented, where we propose a new RF receiver calibration scheme to minimize interference of the calibration signal on the user signals. The calibration signal is injected into a multi-channel receiver through a calibration signal injector whose array response vector is controlled in order to have a low correlation with the antenna response vector of the receive signals. We suggest a model-based antenna array calibration to remove the antenna array errors including mutual coupling errors or to predict the element patterns from the array manifold measured at a small number of angles. Computer simulations and experiment results are shown to verify the calibration algorithms.
关键词：Array calibration;antenna array errors;RF transceiver error;CDMA;smart antennas;multi-channel RF transceiver;model based antenna array calibration