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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Analysis of OFDM Timing Synchronization Method with Imperfect Noise Estimation

불완전한 잡음 예측하에서 OFDM 시간 동기화 기법의 성능 분석

  • 이기창 (호서대학교 공과대학 정보통신공학과) ;
  • 윤영중 (연세대학교 공과대학 전기전자공학과)
  • Published : 2007.03.31
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Abstract

This paper derives and computes the detection probability of timing synchronization in an orthogonal frequency division multiplexing (OFDM) system encountered with a multipath Rayleigh fading channel and imperfect noise estimation. The timing synchronization scheme using a simple repeated constant amplitude zero auto-correlation (CAZAC) training symbol and correlation techniques is adopted. With this provision, we focus on the numerical analysis for OFDM timing synchronization scheme employing a preadvancement technique to reduce the inter-symbol interference (ISI). For measuring system performance, the detection performance derived in the considered system is presented in a multipath Rayleigh fading channel.

본 논문에서는 시간 동기 추정을 위한 잡음 예측이 불완전한 경우에 직교분할 주파수 다중화 (OFDM) 시스템의 시간 동기 확률을 다중 경로 레일레이 페이딩 채널 환경에서 분석한다. 시간 동기 방식은 반복되는 CAZAC 시퀀스에 대한 상관기 구조를 가지며, 심벌간 간섭을 줄이기 위한 pre-advancement 기법을 적용한다. 시스템의 성능 평가 척도로서, 다중 경로 레일레이 채널 환경에서 유도된 동기 검파 확률을 분석한다.

Keywords

References

  1. T. Pollet, M. Van Bladel, and M. Moeneclaey, 'BER sensitivity of OFDM systems to carrier frequency offset and wiener phase noise,' IEEE Trans. Commun., vol.43, pp.191-193, Feb./Mar/ Apr 1995 https://doi.org/10.1109/26.380034
  2. T. M. Schmidl and D. C. Cox, 'Robust frequency and timing synchronization for OFDM,' IEEE Trans. Commun., vol.45, pp.1613-1621, December 1997 https://doi.org/10.1109/26.650240
  3. J.-J. van de Beek, M. Sandell, and P. O. Borjesson, 'ML estimation of time and frequency offset in OFDM systems,' IEEE Trans. Signal Processing, vol.45, pp.1800-1805, July 1997 https://doi.org/10.1109/78.599949
  4. T. Keller, L. Piazzo, P. Mandarini, and L. Hanzo, 'Orthogonal frequency division multiplex synchronization techniques for frequency-selective fading channels,' IEEE J. Select. Areas Commun., vol.19, pp.999-1008, June 2001 https://doi.org/10.1109/49.926356
  5. Kun-Wah Yip, Yik-Chung Wu, and Tung-Sang Ng, 'Timing-synchronization analysis for IEEE 802.11a wireless LANs in frequency-nonselective Rician fading environments,' IEEE Trans. Wireless Commun., vol.3, pp.387-394, March 2004 https://doi.org/10.1109/TWC.2004.825372
  6. U. Lambrette, J. Horstmannshoff, and H. Meyr, 'Techniques for frame synchronization on unknown frequency selective channels,' in Proc. of VTC'97, pp.1059-1063, May 1997
  7. U. Lambrette, M. Speth, and H. Meyr, 'OFDM burst frequency synchronization by single carrier training data,' IEEE Commun. Letters, vol.1, pp.46-48, March 1997 https://doi.org/10.1109/4234.559360
  8. IEEE P802.15-00/110r13, 'IEEE 802.15.3 (TG3) criteria definitions,' September 2000