한국ITS학회 논문지 (The Journal of The Korea Institute of Intelligent Transport Systems)

  • 제10권4호
  • /
  • Pages.100-106
  • /
  • 2011
  • /
  • 1738-0774(pISSN)
  • /
  • 2384-1729(eISSN)
한국ITS학회 (The Korea Institute of Intelligent Transport Systems)
권호 표지

차량통신환경에서의 자동이득제어기법 적용

Implementation of Novel Automatic Gain Control in Vehicular Environments

  • 조웅 (한국전자통신연구원) ;
  • 오현서 (한국전자통신연구원)
  • 투고 : 2011.02.02
  • 심사 : 2011.04.20
  • 발행 : 2011.08.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

무선통신환경에서는 RF신호가 매우 심하게 변하는데, 이러한 신호의 변화는 특히 차량통신환경에서 더욱 심해진다. 자동이득제어는 무선통신시스템에서 신뢰성 있는 통신환경을 제공하고 급격하게 변하는 수신신호를 보상하데 중요한 역할을 한다. 본 논문에서는 수신신호세기값과 아날로그-디지털변환값 두 가지 신호를 이용하는 간단하고 향상된 자동이득 제어기법에 대해 논의한다. 시물레이션과 실제 환경에의 측정을 통해 제안된 기법의 성능을 검증한다.

Radio Frequency (RF) signal fluctuates dynamically in wireless communication environments, where this fluctuation is severe especially in vehicular environments. Automatic Gain Control (AGC) is critical in wireless communications to establish reliable communication links and compensate the received signal fluctuation. In this paper, we introduce a simple and novel AGC scheme which uses both Received Signal Strength Indicator (RSSI) and analog-to digital converter (ADC) signals. Performance enhancement of the proposed AGC scheme is verified with practical measurements including simulations.

키워드

참고문헌

  1. IEEE Std 802.11pTM-2010, IEEE standard for information technology-telecommunications and information exchange between systems-local and metropolitan area networks-specific requirements, Part 11, Amendment 6: Wireless Access in Vehicular Environments, July 2010.
  2. G. Acosta-Marum and M. A. Ingram, "Six time-and frequency-selective empirical channel models for vehicular wireless LANs," IEEE Vehicular Technology Magazine, vol. 2, no. 4, pp.4-11, Dec. 2007.
  3. L. Cheng, B. E. Henty, R. Cooper, D. D. Stancil and F. Bai, "A measurement study of time-scaled 802.11a waveforms over the mobile-to-mobile vehicular channel at 5.9GHz," IEEE Communications Magazine, vol. 46, no. 5, pp.84-91, May 2008.
  4. Y. S. Lee and Y. O. Park, "BER performance of AGC in high-speed portable internet system," Proc. of VTC-Fall, vol. 7, pp.4794-4797, Sep. 2004.
  5. J. H. Jang and H. J. Choi, "A fast automatic gain control scheme for 3GPP LTE TDD system," Proc. of VTC-Fall, pp.1-5. Sep. 2010.
  6. D. Percls, A. Burg, S. Haene, N. Felber and W. Fichtner, "An automatic gain controller for MIMO-OFDM WLAN systems," Proc. of European Conference on Circuits and Systems for Communications, pp.246-251,July 2008.
  7. I. Lee, J. Son, E. Choi and S. Lee, "Fast automatic gain control employing two compensation loop for high throughput MIMO-OFDM receivers," Proc. of Int. Symposium on circuits and systems, pp.01-04, May 2006,
  8. IEEE Std 802.11 2007, IEEE standard for information technology-telecommunications and information exchange between systems-local and metropolitan area networks-specific requirements, Part 11, June 2007.
  9. Miletic, E., Krstic, M., Piz, M. and Methfessel, M., "Digital automatic gain control integrated on WLAN platform," IProc. of World Academy of Science, Engineering and Technology 41, pp.571-575, July 2008.