한국항행학회논문지 (Journal of Advanced Navigation Technology)

  • 제19권2호
  • /
  • Pages.140-146
  • /
  • 2015
  • /
  • 1226-9026(pISSN)
  • /
  • 2288-842X(eISSN)
한국항행학회 (The Korean Navigation Institute)
권호 표지
DOI QR코드

DOI QR Code

L-대역 디지털 항공 통신 시스템의 수신 성능 분석

Performance Analysis of L-band Digital Aeronautical Communication Systems

  • 천정현 (한국항공대학교 항공전자공학과) ;
  • 윤경한 (한국항공대학교 항공전자공학과) ;
  • 장수현 (한국항공대학교 항공전자공학과) ;
  • 정윤호 (한국항공대학교 항공전자공학과)
  • Cheon, Jeong-Hyeon (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Yoon, Kyung-Han (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Jang, Soo-Hyun (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Jung, Yun-Ho (School of Electronics and Information Engineering, Korea Aerospace University)
  • 투고 : 2015.04.11
  • 심사 : 2015.04.21
  • 발행 : 2015.04.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

최근 항공 통신의 데이터 트래픽 증가로 인하여, 대륙 간 항공통신을 위한 L-band 대역 디지털 통신시스템인 LDACS가 제안되었다. LDACS 모델은 LDACS type-1과 LDACS type-2의 두 가지 규격으로 정의 되었으며, 향후 면밀한 검토를 바탕으로 한 가지 시스템을 선정하여 운용하기로 하였다. 이에 본 논문에서는 두 LDACS 시스템의 규격 분석과 함께 채널 환경에 따른 수신 성능을 비교 및 평가함으로써 항공 통신 시스템에의 적용 가능성을 분석하였다. 분석결과, 두 시스템 모두 airport 채널 환경에서 큰 성능 열화를 보였으나 LOS 환경의 en-route 채널의 경우에 우수한 성능을 보임을 확인할 수 있었다. 또한, en-route 환경에서 LDACS type-1과 LDACS type-2의 비교 분석 결과, LDACS type-2 대비 LDACS type-1의 수신 성능이 $10^{-3}$ BER 기준 1 dB 우수함을 확인할 수 있었으며, 이는 보다 강력한 채널 부호가 적용되었기 때문으로 판단된다.

Due to the increase in the data traffic for the aeronautical communications, LDACS has been proposed to support the data link in the continental domain. LDACS is defined in two standards of LDACS type-1 and LDACS type-2, which are going to be selected through the intensive comparison. In this paper, we analyzed two types of standards and evaluated their performance for various channel models. Simulation results show that both LDACS type-1 and LDACS type-2 have a good performance in the en-route channel model, while they have a poor performance in the airport channel model. In the comparison results for LDACS type-1 and LDACS type-2, LDACS type-1 shows the better performance of 1dB than LDACS type-2 owing to the stronger channel coding technique.

키워드

참고문헌

  1. N. Neji, R. de Lacerda, A. Azoulay, T. Letertre, and O. Outtier, "Survey on the future aeronautical communication system and its development for continental communications," IEEE Transactions on Vehicular Technology, Vol. 62, No. 1, pp. 182-191, Jul. 2010. https://doi.org/10.1109/TVT.2012.2207138
  2. T. Gilbert, G. Dyer, and J. Budinger, "Future communication study technology investigation," in IEEE Conference on Integrated Communications Navigation and Surveillance, Herndon: VA, pp. 1-11, May. 2007.
  3. Updated LDACS1 system specification, SESAR, Deliverabel ID EWA04-1-T2-D1, 2011.
  4. R. Jain, F. Templin, and K. Yin, "Analysis of L-band digital aeronautical communication systems: L-DACS1 and L-DACS2," in IEEE Conference on Aerospace, Big Sky: MT, pp. 1-10, Mar. 2011.
  5. L-DACS2 Transmitter and Receiver prototype equipment specifications : Deliverable D3, EUROCONTROL, Edition Number 1.2, 2009.
  6. U. Epple and M. Schnell, "Overview of legacy systems in L-band and its influence on the future aeronautical communication system LDACS1," Aerospace and Electronic Systems Magazine, IEEE Magazine, Vol. 29, No. 2, pp. 31-37, Feb. 2014.
  7. N. Neji, R. de Lacerda, and A. Azoulay, T. Letertre, O. Outtier, "Coexistence between the future aeronautical system for continental communication L-DACS and the distance measuring equipment DME," in IEEE Conference on Satellite Telecommunications, Rome: Italy, pp. 1-7, Oct. 2012.
  8. A. Doukas and G. Kalivas, "Analysis and performance evaluation of a K-symbol pilot assisted channel estimator using linear interpolation for OFDM Systems," in IEEE Conference on Wireless Communications and Networking, Kowloon: Hongkong, pp. 1247-1252, Mar. 2007.
  9. A. Doukas and G. Kalivas, "Performaance analysis of a channel estimator using linear interpolation for OFDM systems," in Fortieth Asilomar Conference on Signals, Systems and Computers, Pacific Grove: CA, pp. 1786-1790, Nov. 2006.
  10. A. Yongacoglu and D. Makarakis, "Differential detection of GMSK using decision feedback," IEEE Transactions on Communications, Vol. 36, No. 6, pp. 641-649, Jun. 1988. https://doi.org/10.1109/26.2784
  11. D. Lee, S. Jang, and Y. Jung, "Design of non-coherent demodulator for LR-WPAN system," Journal of Advanced Navigation Technology, Vol. 17, No. 6, pp. 705-711, Dec. 2013. https://doi.org/10.12673/jkoni.2013.17.6.705