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

  • 제29권2C호
  • /
  • Pages.206-212
  • /
  • 2004
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

주파수 다이버시티를 갖는 STF-OFDM 전송 기법

STF-OFDM Transmission Scheme with Frequency Diversity

  • 박상순 (전북대학교 전자공학과) ;
  • 황호선 (전북대학교 전자공학과) ;
  • 백흥기 (전북대학교 전자공학과)
  • 발행 : 2004.02.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 다중 경로 페이딩 환경에서 고속 데이터 전송에 적합한 STF(Space-Time-Frequency) coded OFDM(Orthogonal Frequency Division Multiplexing) 전송 기법을 제안한다. 2개의 안테나를 통해 신호를 전송함으로써 전송 다이버시티 특성을 이용하는 기법으로 STBC(Space Time Block Coding) 기법이 개발되었으며 이를 OFDM에 적용한 기법으로 ST-OFDM(Space-Time Block Coded OFDM)과 SF-OFDM(Space-Frequency Block Coded OFDM) 전송 기법 등이 제안되었다. 본 논문에서는 시간과 공간, 그리고 주파수 영역에서 부호화를 수행하는 STF-OFDM 전송 기법을 제안한다. 본 논문에서 제시하는 STF-OFDM 전송 기법은 기존의 ST-OFDM 전송 기법에서 주파수 다이버시티 효과를 이용함으로써 ST-OFDM의 성능을 향상시키는 방식이다.

In this paper, we propose a STF(Space-Time-Frequency) coded OFDM(Orthogonal Frequency Division Multiplexing) transmission scheme as an attractive solution for high bit rate data transmission in a multipath fading environment. STBC(Space-Time Block Coding) has been proposed as a simple diversity scheme using two transmit antennas. Also ST-OFDM(Space-Time Block Coded OFDM) and SF-OFDM(Space-Frequency Block Coded OFDM) transmission scheme, that the STBC is applied to the OFDM, has been proposed. In this paper, we propose STF-OFDM transmission scheme that to coded in time, space and frequency domain. The STF-OFDM transmission scheme that we propose in this paper is the way to improve a performance of conventional ST-OFDM, by using frequency diversity.

키워드

참고문헌

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  7. IEEE Trans. Commun. v.49 Improved space-time coding for MIMO-OFDMwireless communications R.S.Blum;Y.Li;J.H.Winters;Q.Yan https://doi.org/10.1109/26.966049
  8. IEEE GLOBECOM 2000 v.3 A spacefrequency transmitter diversity technique for OFDM system K.F.Lee;D.B.Williams
  9. MOBILE FADING CHANNELS M.Ptzold