상세정보
학술지
Array Calibration for CDMA Smart Antenna Systems
- 발행일
- 200412
- 출처
- ETRI Journal, v.26 no.6, pp.605-614
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 03MM1100, 4세대 이동통신 기술개발, 한기철
- 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.
- KSP 제안 키워드
- Antenna array calibration, Computer simulation(MC and MD), Experiment results, Mutual coupling errors, RF receiver, RF transceiver, Smart antenna system, array manifold, calibration algorithm, calibration technique, digital calibration