Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A New Diversity Technique for multi-user OFDM

다중 사용자 OFDM 시스템에서 다이버시티를 향상시키기 위한 새로운 기법

  • Heo, Ji-Haeng (Information and Telecommunication Lab. (B715), Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
  • Min, Hyun-Kee (Information and Telecommunication Lab. (B715), Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
  • Kim, Hyung-Jong (Information and Telecommunication Lab. (B715), Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
  • Hong, Dae-Sik (Information and Telecommunication Lab. (B715), Dept. of Electrical and Electronic Eng., Yonsei Univ)
  • 허지행 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 민현기 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 김형종 (연세대학교 전기전자공학과 정보통신 연구실) ;
  • 홍대식 (연세대학교 전기전자공학과 정보통신 연구실)
  • Published : 2008.06.18
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Abstract

A new diversity technique is proposed for multi-user single-input single-output (SISO) orthogonal frequency division multiplexing (OFDM) uplink system. Each user transmit a symbol using frequency band of all users that are active in the uplink. In addition, a receiver detect each signal using maximum likelihood (ML) method. Simulation results show that the proposed technique improves a diversity order without an additional bandwidth and a loss of data rate.

Keywords