The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An Unambiguous Correlation Function to Improve Tracking Performance for Binary Offset Carrier Signals

이진 옵셋 반송파 신호 추적 성능 향상을 위한 비모호 상관함수

  • Woo, Sunghyuk (Sungkyunkwan University, College of Information & Communication Engineering) ;
  • Chae, Keunhong (Sungkyunkwan University, College of Information & Communication Engineering) ;
  • Lee, Seong Ro (Mokpo National University, Department of Information and Electronics Engineering) ;
  • Yoon, Seokho (Sungkyunkwan University, College of Information & Communication Engineering)
  • Received : 2015.04.02
  • Accepted : 2015.07.09
  • Published : 2015.07.31
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Abstract

In this paper, we propose an unambiguous correlation function to improve tracking performance for binary offset carrier (BOC) signals. Specifically, we divide a BOC sub-carrier into multiple rectangular pulses, and analyze that the BOC autocorrelation function is made up of the sum of several partial correlation functions. Then, we obtain two sub-correlation functions by combining two partial correlation functions and propose a novel unambiguous correlation function with no side-peak which can be regulated its width based on the combination of the sub-correlation functions and partial correlation functions. From numerical results, it is confirmed that the proposed correlation function provides a tracking performance improvement over the conventional correlation functions in terms of the tracking error standard deviation.

본 논문에서는 이진 옵셋 반송파 (binary offset carrier: BOC) 신호의 추적 성능 향상을 위한 비모호 상관함수를 제안한다. 구체적으로는 BOC 신호의 부반송파를 여러 개의 펄스가 존재하는 형태로 해석하고, BOC 신호의 자기상관함수를 여러 개의 부분상관함수들의 합으로 해석한다. 이후 두 개의 부분상관함수를 조합하여 새로운 두개의 부상관함수를 생성하고, 부상관함수와 부분상관함수의 조합을 통하여 폭을 조절할 수 있으며 주변 첨두를 가지지 않는 비모호 상관함수를 제안한다. 모의실험을 통해 신호 추적에 제안한 상관함수를 이용한 경우 기존의 상관함수들을 이용한 경우에 비해 더욱 향상된 추적 오류 표준편차를 가지는 것을 확인한다.

Keywords

References

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