Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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A Signal Quality Measurement Algorithm for CDMA2000 1x Reverse-link

CDMA2000 1x 역방향 링크의 신호 품질 측정 알고리즘

  • Kang, Sung-Jin (School of Electrical, Eelctronics & Comm. Eng,, Korea University of Tech. and Educ.)
  • 강성진 (한국기술교육대학교 전기전자통신공학부)
  • Received : 2012.10.26
  • Accepted : 2012.12.30
  • Published : 2012.12.31
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Abstract

In this paper, we propose and implement a signal quality measurement algorithm for CDMA2000 1x terminal. The proposed algorithm is suitable to be implemented in software on a PC-based platform and extract the received signal after carrying out equalization, PN code acquisition and tracking, frequency and phase offset compensation with 4-oversampled input signal. Then, through despreading and demodulation with the extracted signal, the proposed algorithm regenerate the reference signal to be used in measurement. The signal quality is measured using this regenerated signal and the extracted signal.

본 논문에서는 CDMA2000 1x 단말기 신호의 품질 측정을 위한 알고리즘을 제안하고 구현하였다. 제안된 알고리즘은 PC 기반 플랫폼에서 소프트웨어로 구현이 가능하도록 하였으며, 4배 오버샘플링된 입력 신호에 대하여 등화, PN 부호 동기 및 추적, 주파수 및 위상 오프셋 보상을 수행하여 수신 신호가 추출되고, 추출된 신호로부터 역확산, 복조를 통해 측정에 사용될 기준 신호를 재생성한다. 이 재생성된 신호와 추출된 신호를 이용하여 단말기의 신호 품질을 측정한다.

Keywords

References

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