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

  • 제29권6C호
  • /
  • Pages.883-892
  • /
  • 2004
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

STBC-OFDM 시스템에서 빔형성 기법의 성능평가

Performance Evaluation of Beamformer for STBC-OFDM Systems

  • 이상문 (문경대학 정보통신계열) ;
  • 최형진 (성균관대학교 정보통신공학부)
  • 발행 : 2004.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

최근 무선통신 시스템에서 고속 데이타의 전송 및 스펙트럼의 효율을 개선하기 위한 방법으로 시공간부호와 OFDM을 결합한 시스템에 대한 연구가 활발하다. 또한 다중사용자 시스템에서 시스템 용량을 개선하기 위한 해법으로 적응형 안테나가 고려되고 있다. STBC를 이용하는 시스템의 수신기에서 한 사용자의 두 개의 안테나로부터 전송되는 신호는 서로 중첩되어 사용자의 송신 안테나간에도 서로 간섭을 일으키게 된다. 따라서 기존의 하나의 송신 안테나를 이용하는 경우에 대한 범형성 기법을 그대로 적용하기 어렵다. 본 논문에서는 역방향 링크에서 시공간 부호화와 OFDM을 결합한 STBC-OFDM에서 훈련열을 이용한 MMSE 범형성 기법에 대해 살펴보고, 그 성능을 TU 채널과 HT채널에 대해 다양한 파라미터를 이용하여 평가하고, angle spread의 효과도 분석한다.

Recently, in order to improve high speed data transmission and spectral efficiency in wireless communication systems, the study on the combination OFDM and space-time coding is active. Also, a solution to improve system capacity in multiuser systems is to use adaptive antennas. In a system using STBC, the signals transmitted from two transmit antennas are superposed at the receive antenna and the interference between two transmit antennas of a user occures. Thus it is difficult to apply the conventional beamforming techniques for single antenna to the systems using space-time coding. In this Paper, we present the MMSE beanforming technique using training sequence for STBC-OFDM systems in reverse link and evaluate the performance by using various parameters in TU and HT channels.

키워드

참고문헌

  1. IEEE Commun. Mag. v.36 no.10 Advanced cellular internet service(ACIS) L.J.Cimini,Jr.;J.C.I.chuang;N.R.Sollenberger https://doi.org/10.1109/35.722151
  2. IEEE Signal Processing Mag. v.17 Increasing data rate over wireless channels A.F.Naguib;N.Seshadri;A.R.Calderbank https://doi.org/10.1109/79.841731
  3. IEEE Trans. Inform. Theory v.44 Space-time codes for high data rate wireless communications: Performance analysis and code construction V.Tarokh;N.Seshadri;a.R.Calderbank https://doi.org/10.1109/18.661517
  4. IEEE J. Select. Areas Commun. v.17 no.3 Space-time block coding for wireless communication: performance results V.Tarokh;H.Jafarkhain;A.R.Calderbank https://doi.org/10.1109/49.753730
  5. IEEE J. Select. Areas Commun. v.17 no.3 Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels Y.Li;N.Seshadri;s.Ariyavisitakul https://doi.org/10.1109/49.753731
  6. IEEE J. Select. Areas Commun. v.17 no.7 Transmitter diversity for OFDM systems and its impact on high-rate data wireless networks Ye Ki;J.C.Chuang;N.R.sollenberger https://doi.org/10.1109/49.778182
  7. in Proc. IEEE VTC Space-time coded OFDM for igh data-rate wireless communication over wideband channels D.Agrawal;V.Tarokh;A.Naguib;N.Seshadri
  8. IEEE Trans. on Commun v.47 Adaptive antenna array for OFDM systems with cochannel interference Y.Li;N.R.Sollenberger
  9. in Proc. IEEE VTC'98 v.1 Adaptive antennas for OFDM F.W.Vook;K.L.Baum
  10. IEEE Trans, on Consumer Electronics v.46 no.4 Adaptive beamforming algorithm for OFDM system with antenna arrays C.Y.Kim;K.Lee;Y.S.Cho https://doi.org/10.1109/30.920461
  11. in Proc. IEEE VTC2002 Spring v.4 Modified SMI techniques for frequency selective channels in OFDM Diego Bartolome;Ana I.Perez Neira
  12. in Proc. IEEE VTC2002 Spring v.3 A novel adaptive antenna architecture-subcarrier clustering for high-speed OFDM system in preence of rich co-channel interference Y.Sun;H.Matsuoka
  13. in Proc. IEEE VTC2002 Spring v.4 Downlink beamforming method using STBC for mobile propagation environments Yasushi Takatori;Keizo Cho;Toshikazu Hori
  14. in Proc. IEEE VTC2002 Spring v.3 Smart antenna testbed for SDMA systems using STBC Yasushi Takatori;Keizo Cho;Toshikazu Hori
  15. in Proc. IEEE VTC2000 space-time-block-coded OFDM systems with transmit beamformers for high-speed indoor wireles communications Kuo-Hui Ki;Mary Ann Ingram
  16. IEEE Trans. on Signal Processing v.50 no.10 Optimal transmitter eigen-beamforming and space-time blick coding based on channel mean feedback Shengli Zhou;Georgios B.Giannakis https://doi.org/10.1109/TSP.2002.803355
  17. IEEE Transactions on Wireless Communications v.2 no.1 Co-channel interference cancellation for space-time coded OFDM systems J.Ki;K.B.Letaief;Z.Cao https://doi.org/10.1109/TWC.2002.806361
  18. Digital Beamforming in Wireless communications J.Litva;T.Lo