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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지
DOI QR코드

DOI QR Code

Cancellation of AltBOC Correlation Side-Peaks for Frequency Sharing in Satellite Communication Spectrum

위성통신대역 주파수 공유를 위한 AltBOC 상관 내 주변 첨두 제거 기법

  • Chae, Keunhong (Sungkyunkwan University, College of Information & Communication Engineering) ;
  • Yoon, Seokho (Sungkyunkwan University, College of Information & Communication Engineering)
  • Received : 2014.11.03
  • Accepted : 2014.11.12
  • Published : 2014.11.28
Download PDF
⟨ Previous Next ⟩

Abstract

The alternative binary offset carrier (AltBOC) signal shares frequency spectrum with the phase shift keying (PSK) signal, enabling us to manage the satellite communication spectrum more efficiently. However, the side-peaks in the AltBOC autocorrelation pose an ambiguity in the AltBOC signal tracking, and consequently, makes the frequency sharing via the AltBOC difficult. Therefore, in this paper, we propose a cancellation scheme of the AltBOC correlation side-peaks. From the numerical results, it is confirmed that the proposed scheme removes the ambiguity in signal tracking caused by the side-peaks completely, and thus, has a much lower tracking error standard deviation (TESD) (i.e., a much better tracking performance) than the conventional scheme.

Alternative binary offset carrier (AltBOC) 신호는 기존의 phase shift keying (PSK) 신호와 주파수 대역을 공유한다는 특성을 지니고 있기에, 효율적으로 주파수 대역을 이용할 수 있다는 장점이 있으나, AltBOC 신호의 자기상관함수에 존재하는 주변 첨두로 (side-peak) 인해 AltBOC 신호의 주파수 공유 특성을 효과적으로 이용할 수 없다는 단점이 존재한다. 따라서 본 논문에서는 AltBOC 신호의 주파수 공유 특성을 극대화하고자 자기상관함수에 존재하는 주변 첨두 제거 기법을 제안한다. 모의실험을 통해 제안한 기법을 이용하여 신호 추적을 수행할 경우, 주변 첨두 제거 효과에 의해 기존 자기상관함수를 이용하는 기법에 비해 향상된 추적 오류 표준편차를 (tracking error standard deviation: TESD) 보이고, 이에 따라 AltBOC 신호의 주파수 공유 특성을 효과적으로 이용할 수 있음을 보인다.

Keywords

References

  1. J. A. Avila-Rodriguez, "On generalized signal waveforms for satellite navigation," Ph.D. dissertation, Dept. Aer. Engineer., University of Munich, Munich, Germany, 2008.
  2. Y. Lee, S. R. Lee, and S. Yoon, "A novel BOC(n,n) correlation function for maritime satellite communications," J. KICS, vol. 38C, no. 3, pp. 296-302, Mar. 2013. https://doi.org/10.7840/kics.2013.38C.3.296
  3. K. Chae and S. Yoon, "A Spectrum Sensing Scheme Based on Sensing Time Partitioning for High Traffic Environments," J. KICS, vol. 38A, no. 10, pp. 838-844, Oct. 2013. https://doi.org/10.7840/kics.2013.38A.10.838
  4. J. Kim, Cognitive radio communications, 1st Ed., Intervision, 2008.
  5. S. K. Sharma, S. Chatzinotas, and B. Ottersten, "Satellite cognitive communications: Interference modeling and techniques selection," in Proc. Advanced Satellite Multimedia Syst. Conf. (ASMS) and 12th Signal Process. Space Commun. Workshop (SPSC), pp. 111-118, Baiona, Spain, 2012.
  6. G. W. Hein, J. W. Betz, J.-A. Avila- Rodriguez, C. J. Hegarty, S. Wallner, L. S. Lenahan, A. R. Pratt, J. J. Rushaman, J. Owen, A. L. Kray, J.-L. Issler, and T. A. Stansell, "MBOC: The new optimized spreading modulation recommended for Galileo L1 OS and GPS L1C," in Proc. IEEE/ION Plans, pp. 883-892, San Diego, CA, Apr. 2006.
  7. J.-A Avila-Rodriguez, "On generalized signal waveforms for satellite navigation," Ph.D. dissertation, Dept. Aerosp. Eng., Univ. Munich, Munich, Germany, Jun. 2008.
  8. O. Julien, C. Macabiau, M. E. Cannon, and G. Lachapelle, "ASPeCT: Unambiguous sine- BOC(n,n) acquisition/tracking technique for navigation applications," IEEE Trans. Aerosp., Electron. Syst., vol. 43, no. 1, pp. 150-162, Jan. 2007. https://doi.org/10.1109/TAES.2007.357123
  9. A. Burian, E. S. Lohan, and M. K. Renfors, "Efficient delay tracking methods with sidelobes cancellation for BOC-modulated signals," EURASIP J. Wirel. Commun. Netw., vol. 2007, article ID. 72626, 2007.
  10. Z. Yao, M. Lu, and Z. Feng, "Unambiguous technique for multiplexed binary offset carrier modulated signals tracking," IEEE Signal Process. Lett., vol. 16, no. 7, pp. 608-611, Jul. 2009. https://doi.org/10.1109/LSP.2009.2020462
  11. Z. Yao, X. Cui, M. Lu, Z. Feng, and J. Yang, "Pseudo-correlation-function-based unambiguous tracking technique for sine-BOC signals," IEEE Trans. Aerosp., Electron. Syst., vol. 46, no. 4, pp. 1782-1796, Oct. 2010 https://doi.org/10.1109/TAES.2010.5595594
  12. J. I. Park, Y.-P. Lee, S. Yoon, S. Y. Kim, and Y. H. Lee, "Synchronization technique based on adaptive combining of sub-correlations of multiband sine phased BOC signals," J. KICS, vol. 36, no. 11, pp. 694-701, Nov. 2011. https://doi.org/10.7840/KICS.2011.36C.11.694
  13. Y. Lee and S. Yoon, "A novel unambiguous correlation function for composite binary offset carrier signal tracking," J. KICS, vol. 38A, no. 6, pp. 512-519, Jun. 2013. https://doi.org/10.7840/kics.2013.38A.6.512
  14. A. J. Van Dierendonck, P. Fenton, and T. Ford, "Theory and performance of narrow correlator spacing in a GPS receiver," J. Inst. Navig., vol. 39, no. 3, pp. 265-283, 1992. https://doi.org/10.1002/j.2161-4296.1992.tb02276.x