Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Performance Analysis of Residual Frequency Estimator in WiBro Geo-location System

와이브로 망을 이용한 지상파 측위 시스템의 가청성 향상을 위한 잔여주파수 추정기 성능 분석

  • 박지원 (충남대학교 전자전파정보통신공학과) ;
  • 임정민 (충남대학교 전자전파정보통신공학과) ;
  • 성태경 (충남대학교 전기정보통신공학부)
  • Received : 2011.09.14
  • Accepted : 2011.12.11
  • Published : 2012.01.01
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Abstract

In cellular geo-location systems, positioning performance is influenced by hearability of receivers. Hearability can be enhanced by using long integration at the receiver. When unknown residual frequency remains in baseband signals, however, the coherent integration loss increases as the residual frequency becomes larger. Consequently, length of coherent integration is determined by the residual frequency. By precise estimation and compensation of the residual frequency, integration length can be enlarged. This paper presents a residual frequency estimator for WiBro geo-location and analyzes its performance in multipath environment. By computer simulation, an optimal receiver structure to enhance the hearability of WiBro geo-location is proposed.

Keywords

References

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