Blind Estimation of Hop Timing and Duration of FHSS Systems

주파수 도약 확산 스펙트럼 시스템의 블라인드 도약 시간 및 주기 추정 알고리듬

  • Lee, Hui-Soo (Department of Electronics and Computer Engineering, Chungnam National University) ;
  • Park, Hyo-Bae (Department of Electronics and Computer Engineering, Chungnam National University) ;
  • Kang, Dong-Hoon (Department of Electronics and Computer Engineering, Chungnam National University) ;
  • Park, Cheol-Sun (ADD) ;
  • Oh, Wang-Rok (Department of Electronics and Computer Engineering, Chungnam National University)
  • 이희수 (충남대학교 전자전파정보통신공학과) ;
  • 박효배 (충남대학교 전자전파정보통신공학과) ;
  • 강동훈 (충남대학교 전자전파정보통신공학과) ;
  • 박철순 (국방과학연구소) ;
  • 오왕록 (충남대학교 전기정보통신공학)
  • Received : 2010.04.07
  • Accepted : 2010.08.13
  • Published : 2010.08.25

Abstract

In this paper, a blind hop timing and duration estimation scheme for FHSS (Frequency Hopping Spread Spectrum) systems based on digital frequency discriminator and wavelet transform is proposed. The proposed scheme not only requires the lower hardware complexity but also shows superior estimation performance compared to the previously proposed temporal correlation function based hop timing estimation scheme.

본 논문에서는 디지털 주파수 판별기 (digital frequency discriminator)와 웨이블릿 변환 (wavelet transform)을 이용한 주파수 도약 확산 스펙트럼 시스템 (frequency hopping spread spectrum systems) 신호의 도약 시간 (hop timing)과 도약 주기(hop duration)를 블라인드 (blind)로 추정하는 알고리듬을 제안한다. 제안하는 알고리듬은 기존에 제안된 시간 상관함수(temporal correlation function) 기반 도약 시간 추정 알고리듬에 비하여 구현 복잡도가 낮을 뿐만 아니라 추정 성능이 우수하다.

Keywords

References

  1. M. K. Simon, U. Cheng, L. Aydin, A. Polydoros, "Hop timing estimation for noncoherent frequency-hopped M-FSK intercept receivers," IEEE Trans. Commun., vol. 43, no. 2-4, pp. 1144-1154, Feb.-Apr. 1995. https://doi.org/10.1109/26.380146
  2. C. D. Chung, "Generalised likehood-ratio detection of multiple-hop frequency-hopping signals," IEE Proc. Commun., vol. 141, no. 2, pp. 527-531, Apr. 1994.
  3. C. C. Ko, W. Zhi, and F. Chi, "ML-based frequency estimation and synchronization of frequency hopping signals," IEEE Trans. Signal. Process., vol. 53, pp. 403-410, Feb. 2005. https://doi.org/10.1109/TSP.2004.840703
  4. F. G. A. Coupe, "Digital frequency discriminator," Electron. lett., vol. 12, no. 16, pp. 489-490, 1979
  5. C. Burrus, R. Gopinath, and H. Guo, "Wavelets and Wavelet transforms : A Primer," Prentice Hall, Upper Saddle River, New Jersey, 1998
  6. Y. P. Cheng, "Detection of frequency hopped signals timing information using the temporal correlation function," MSEE Thesis, Naval Postgraduate School, Sept. 2008.