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ETRI journal v.26 no.6, 2004년, pp.605 - 614  
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Array Calibration for CDMA Smart Antenna Systems

Kyeong, Mun-Geon    (Mobile Telecommunication Research Division, ETRI   ); Park, Hyung-Geun    (Mobile Telecommunication Research Division, ETRI   ); Oh, Hyun-Seo    (Telematics Research Division, ETRI   ); Jung, Jae-Ho    (Mobile Telecommunication Research Division, ETRI  );
  • 초록

    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.


  • 주제어

    Array calibration .   antenna array errors .   RF transceiver error .   CDMA .   smart antennas .   multi-channel RF transceiver .   model based antenna array calibration.  

  • 참고문헌 (15)

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