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

  • 제34권3C호
  • /
  • Pages.329-340
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  • 2009
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  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

BOC(pn,n) 변조된 확산신호의 부호동기추적을 위한 일반화된 이른영역상관기법

A Generalized Advanced Region Correlation (G-ARC) Scheme for BOC(pn,n) Modulated Code Tracking in GNSS

  • 유승수 (건국대학교 전자정보통신공학부) ;
  • 이영윤 (성균관대학교 정보통신공학부) ;
  • 김영문 (건국대학교 전자정보통신공학부) ;
  • 윤석호 (성균관대학교 정보통신공학부) ;
  • 김선용 (건국대학교 전자정보통신공학부)
  • 발행 : 2009.03.31
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 이진천이반송파 (binary offset carrier, BOC) 변조된 확산신호의 부호동기추적에 적합한 기법을 제안한다. 이진천이반송파 변조된 확산신호의 상관함수는 정확한 상관옵셋에서 나타나는 주첨두와 여러 부첨두를 갖고 있다. 다중 경로 채널환경에서 가시신호에 비해 다중경로신호는 항상 지연되어 수신되기 때문에 여러 부침두 가운데 정확한 상관옵셋보다 이른 상관옵셋 영역에 있는 상관함수는 늦은 상관옵셋영역에 있는 상관함수에 비해 덜 왜곡된다. 본 논문에서는 이 특징을 활용해 BOC(n,n) 변조된 확산신호의 부호추적에 적합한 이른영역상관(advanced region correlation, ARC) 기법을 제안한다. 그리고 모의실험을 통해 안정된 다중경로 (static multipath) 채널과 지상이동체위성시스템 (land mobile satellite system) 채널에서 기존과 제안한 기법의 부호동기 추적성능을 비교한다. 또한 BOC(pn,n) 변조된 확산신호에 적합한 이른영역상관 기법의 확장 형태인 일반화된 이른영역상관기법 (generalized-ARC, G-ARC) 제안하고, 모의실험을 통해 그 성능을 보인다.

This paper proposes a novel code tracking scheme to track the fine code synchronization for BOC(pn,n) modulated spreading signals. The correlation function of BOC(pn,n) modulated spreading signals has been several peaks. In this paper, we observe that the correlation function in the advanced offset region remains almost unchanged, due to the multipath signals being received later than a line-of-sight signal. Based on this observation, we propose a novel code tracking scheme which is called the advanced region correlation (ARC) method for BOC(n,n) modulated spreading signals. And, we compare with the code tracking accuracy between the conventional and proposed methods in the static multipath and land mobile satellite system channels through the Monte-Carlo simulation. Then, base on the proposed scheme, we propose the generalized-ARC (ARC) scheme for BOC(pn, n) modulated spreading signals.

키워드

참고문헌

  1. A. R. Athanasios, B. Kostas, M. Alexandra, and P. Jacques, 'Efficient semi-blind estimation of multipath channel parameters via a delay decoupling optimization approach,' Trans. Elsevier Signal Processing, vol. 85, issue 12, pp. 2394-2411, Dec. 2005 https://doi.org/10.1016/j.sigpro.2005.02.018
  2. J. W. Betz, 'Binary offset carrier modulations for radionavigation,' Trans. ION: Navigation, vol. 48, no. 4, pp. 227-246, Dec. 2002
  3. J. W. Betz, M. A. Balanco, C. R. Cahn, P. A. Dafesh, C. J. Hegarty, K. W. Hudnut, V. Kasemsri, R. Keegan, K. Kovach, C. L. S. Lenahan, H. H. Ma, J. J. Rushanan, D. Sklar, T. A. Stansell, C. C. Wang, and S. K. Yi, 'Enahncing the future of civil GPS: overview of the L1C signal,' Mag. Inside-GNSS, www.insidegnss.com /auto /igm _042-049.pdf, Apr. 2007
  4. M. S. Braasch, 'Performance comparison of multipath mitigating receiver architecture,' Proc. IEEE Aerospace, vol. 3, pp. 1309-1315, Big Sky, MT, Mar. 2001 https://doi.org/10.1109/AERO.2001.931361
  5. M. Z. Bhuiyan, E. S. Lohan, and M. Renfors, 'Code tracking algorithms for mitigating multipath effects in fading channels for satellite-based positioning,' Trans. EURASIP Advanced in Signal Processing, CD-ROM, Feb. 2008
  6. European Space Agency and Galileo Joint Undertaking, L1 Band Part of Galileo Signal in Space ICD (SIS ICD), Galileo Joint Undertaking, www.galileoic.org, 2006
  7. M. Fantino, G. Marucco, P. Mulassano, M. Pini, 'Performance analysis of MBOC, altBOC and BOC modulations in terms of multipath effects on the carrier tracking loop within GNSS receivers,' Proc. IEEE/ION Position, Location and Navigation Symposium, CD-ROM, Monterey, CA, May 2008 https://doi.org/10.1109/PLANS.2008.4570092
  8. FCC Docket No.94-102, 'Revision of the commissions rules to insure compatibility with enhanced 911 emergency calling systems,' FCC: Technical Report RM-8431, July 1994
  9. G. W. Hein, M. Irsigler, J. A. Avila-Rodriguez, and T. Pany, 'Performance of Galileo L1 signal candidates,' Proc. ENC-GNSS2004, CD-ROM, Rotterdam, Netherlands, May 2004
  10. J. K. Holems, Spread Spectrum Systems for GNSS and Wireless Communications, Artech House Publishers, Inc., Northwood, MA, 2007
  11. A. Jhan, H. Bischl, and G. Heis, 'Channel characterisation for spread spectrum satellite communications,' Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), vol. 3, pp. 1221-1226, Mainz, Germany, Sep. 1996 https://doi.org/10.1109/ISSSTA.1996.563500
  12. E. Kaplan, Understanding GPS Principles and Applications, 2nd Edition, Artech House Publishers, Inc., Northwood, MA, 2005
  13. C. Lee, S. Yoo, S. Yoon, and S. Y. Kim, 'A novel multipath mitigation scheme based on slope differential of correlator output for Galileo systems,' Proc. International Conference on Advanced Communication Technology (ICACT), CD-ROM, Pyeongchang, Korea, Feb. 2006
  14. F. D. Nunes, F. M. Sousa, and Jose M. Leitao, 'Multipath mitigation technique for BOC signals using gating functions,' Proc. Navigation User Equipment Technologies(NAVITEC), CD-ROM, Noordwijk, Netherlands, Dec. 2004
  15. A. Simsky and J. Sleewaegen, 'Performance assessment of Galileo ranging signals transmitted by GSTB-V2 satellite,' Proc. ION GNSS, CD-ROM, Fort Worth, TX, Sep. 2006
  16. U. S. and E. C., Agreement on the Promotion, Provision, and use of Galileo and GPS Satellite-Based Navigation Systems and Related Applications, http: / /pnt.gov ,/ 2/public /docs H/ 2004-US-EC-aggrement.pdf, 2004
  17. S. Yoo, E. Lee, S. Yoon, and S. Y. Kim, 'A novel tracking scheme for Galileo BOC(1,1) system,' Proc. ITC-CSCC, CD-ROM, Pusan, Korea, July 2007