唐冬,杨亮,吕明霞.分布式MIMO系统多普勒信道的容量自相关特性研究[J].南华大学学报(自然科学版),2005,(3):36~39.[.Capacity Autocorrelation Characteristics of Distributed MIMO Systems in Doppler Spread Channels[J].Journal of University of South China(Science and Technology),2005,(3):36~39.]
分布式MIMO系统多普勒信道的容量自相关特性研究
Capacity Autocorrelation Characteristics of Distributed MIMO Systems in Doppler Spread Channels
  修订日期:2005-04-26
DOI:
中文关键词:  分布式天线  MIMO  容量自相关  多普勒频移
英文关键词:distributed antenna,MIMO,capacity autocorrelation,Doppler shift
基金项目:
唐冬  杨亮  吕明霞
[1]南华大学电气工程学院,湖南衡阳421001 [2]中山大学信息科学与技术学院,广东广州510275 [3]衡阳市公路管理局,湖南衡阳421001
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中文摘要:
      采用多天线的分布式MIMO系统保持了分布式天线系统和点对点MIMO系统的优点,在分布式MIMO系统中的TDD模态采用仅仅反映系统容量使用信息的简化反馈方式,可以降低系统复杂性,本文研究了分布式MIMO系统多普勒效应下系统容量的自相关特性,研究发现:系统容量的自相关可以由信道的自相关特性来预测,从而可以大大简化系统的反馈,提高系统性能。
英文摘要:
      Distributed MIMO that employs multiple antennas keeps the advantages of the distributed antenna system and the point-to-point MIMO system.A simple feedback that only indicates the capacity autocorrelation information(CAI) can be used in the TDD mode of the distributed MIMO system to decrease the system complexity.To obtain the CAI,this paper examines the channel capacity autocorrelation characteristics of the distributed MIMO system in Doppler spread channel and shows that the capacity autocorrelation coefficient can be predicted by the channel autocorrelation coefficient to improve the system performance and decrease the feedback complexity.
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