The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Cooperative Diversity MIMO System for m with 8 Transmit Antennas

8개 송신 안테나 UWB를 위한 협동 다이버시티 MIMO 시스템

  • Lee Kwang-Jae (Department of Inform. & Telecomm. Engineering, Hanlyo University) ;
  • Hou Jia (Institute of Information & Communication) ;
  • Lee Moon-Ho (Institute of Information & Communication) ;
  • Cho Sam-Goo (Institute of Information & Communication)
  • 이광재 (한려대학교 멀티미디어정보통신공학과) ;
  • ;
  • 이문호 (전북대학교 정보통신연구소) ;
  • 조삼구 (전북대학교 정보통신연구소)
  • Published : 2005.07.01
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Abstract

The forward link of the 3 G CDMA system may become limited under the increasing of the number of users. The conventional channelization code, Walsh code, has not enough sizes for much possible non, therefore, the quasi orthogonal function(QOF), which process optimal cross-correlation with Walsh code, is considered. In this paper, we investigate quasi orthogonal function on Jacket matrices, which can lead lower correlations values and better performance in 3 G CDMA system. Moreover, to simple the detector and improve the BER performance, a novel detection for QOF CDMA system is proposed. Finally, the simple recursive generation of the bent sequences for QOF mask function is discussed.

본 논문에서는 고속 근거리 데이터 전송을 위해 새로운 협동 다이버시티를 얻기 위한 실내 환경에 적합한 UWB(Ultra Wideband) MIMO(Multiple Input and Multiple Output) 채널 시스템을 제안한다. 셀과 유사하게 4개 또는 8개의 안테나를 이용하는 협동 UWB 네트워킹에 의한 다중 안테나 시스템을 고찰하였다. 먼저, 4개의 안테나를 갖는 실내 UWB 네트워킹, 이어서 4개의 안테나를 갖는 실외 UWB 네트워킹, 그리고 마지막으로 8개의 안테나를 이용하여 실외에서 실내로 향하는 이동국을 포함하는 UWB 네트워킹의 3가지 상황에 대해서 고찰한다. 본 제안에서 는 좌표(coordinate) 인터리브 시공간 부호(space time codes)와 UWB 신호가 이용된다. 이론적 상한과 시뮬레이션은 제안 알고리즘에 의해 산란 전파환경 및 상관 채널에서 간단하게 다이버시티를 달성할 수 있음을 보여주고 있다.

Keywords

References

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