Journal of Korea Society of Digital Industry and Information Management (디지털산업정보학회논문지)

Korea Society of Digital Industry and Information Management (디지털산업정보학회)
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A comparison study of the performance and computational complexity of various MIMO technoques in WiBro downlink system

WiBro 다운링크 환경에서 여러 가지 MIMO 기법의 성능 및 연산량에 대한 비교 연구

  • 홍경화 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 오태열 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 최승원 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실)
  • Received : 2008.05.20
  • Accepted : 2008.06.13
  • Published : 2008.06.30
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Abstract

Combining OFDMA with MIMO is the key technology for the 4G mobile communication. OFDMA can relieve inherent difficulties of high-speed transmission. MIMO technology can be largely categorized into two techniques: one is STC for diversity gain and the other is SM for high frequency efficiency. In this paper, we depict various MIMO techniques of two transmit antenna and compare the computational complexity of decoding process for the techniques. Then, we analysis the performance of the techniques in the WiBro downlink environment based on OFDMA. We perfer ML algorithm which is the optimum performance and ZF algorithm of least computational complexity for SM detection.

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