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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A New Preamble Structure for a MIMO OFDM-based WLAN System

MIMO OFDM 기반 무선랜 시스템에서의 새로운 프리앰블 구조

  • 김지형 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 홍대식 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 강창언 (연세대학교 전기전자공학과 정보통신 연구실)
  • Published : 2004.12.01
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Abstract

In this paper, we propose a new preamble structure for channel estimation in a MIMO OFDM-based WLAN System. Moreover, both the backward compatibility with IEEE 802.11a system and low overhead are considered for the preamble design. Simulation results show that the proposed preamble has low overhead and is obtained the good performance gain for channel estimation.

본 논문에서는 MIMO OFDM 기반 무선랜 시스템에서 다중 채널 추정을 위한 새로운 프리앰블 구조를 제안한다. 또한 기존의 OFDM 기반 무선랜 시스템인 IEEE 802.11a 시스템과의 호환성 문제와 더불어 프리앰블에 따르는 오버헤드 (overhead) 를 줄이는 방안을 함께 고려한다. 모의실험을 통해 제안한 프리앰블 구조가 적은 오버헤드를 가지면서도 좋은 채별 추정 성능을 얻음을 알 수 있다.

Keywords

References

  1. IEEE 802.11, Supplement to Standard for Telecommunications and Information Exchange Between Systems- LAN/MAN Specific Requirements-Part Ⅱ: Wireless MAC and PHY Specifications: High Speed Physical Layer in the 5 GHz Band, P802.11a, Dec.1999
  2. I. Barhumi, G. Leus, M. Moonen, 'Optimal training design for MIMO OFDM systems in mobile wireless channels', IEEE Trans. on Signal Processing, Vol.51, Issue.6, pp.1615--1624, June 2003 https://doi.org/10.1109/TSP.2003.811243
  3. S. Sun, I. Wiemer, C.K. Ho, T.T Tjhung, 'Training sequence assisted channel estimation for MIMO OFDM', WCNC 2003. 2003 IEEE, Vol.1, pp.38--43, Mar. 2003 https://doi.org/10.1109/WCNC.2003.1200316
  4. Yahong Zhao, Weihua Li, Weiling Wu, 'An efficient channel estimation method for OFDM systems with multiple transmit antennas", ICII 2001, Vo1.2, pp.335--339, Nov. 2001
  5. S. Ben Slimane, 'Channel estimation for ofdm based systems with transmitter diversity', Systems, Man and Cybernetics, 2002 IEEE International Conference on, Vol.1, pp.397--402, Oct. 2002
  6. IEEE 802.11-03/714r0
  7. A. van Zelst, T.C.W. Schenk, 'Implementation of a MIMO OFDM-based wireless LAN system', IEEE Trans. on Signal Processing, Vol.52, Issue.2, pp.483--494, Feb. 2004 https://doi.org/10.1109/TSP.2003.820989
  8. Jihyung Kim, Jeongho Park, and Daesik Hong, 'Performance Analysis of Channel Estimation in OFDM Systems', VTC'F04, Sept. 2004
  9. ETSI Normalization Committee, 'Channel Models for HIPERLAN/2 in Different Indoor Scenarios', ETSI EP BRAN 3ERI085B, 1998