Fading correlation and its effect on the capacity of multielement antenna systems
Fading correlation and its effect on the capacity of multielement antenna systems
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DOI：
10.1109/26.837052
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发表时间：
2000-03-01
影响因子：
8.3
通讯作者：
Kahn, JM
中科院分区：
文献类型：
--
作者：
Shiu, DS;Foschini, GJ;Kahn, JM
本文研究了多天线通信系统中衰落相关性的影响。开拓性的研究表明，如果连接发射和接收天线单元对的衰落是独立同分布的，那么与单天线系统相比，多天线通信系统的容量将大大增加。MEA系统可以用空间本征模来描述，空间本征模是单输入单输出子信道。MEA的信道容量是这些子信道的容量之和。我们将表明，衰落相关性影响MEA容量通过修改这些子信道的增益分布。衰落相关性取决于MEA的物理参数和散射体特性。本文采用一种抽象的模型来描述衰落相关性，该模型适用于模拟野外无线通信系统中的窄带瑞利衰落。
We investigate the effects of fading correlations in multielement antenna (MEA) communication systems, Pioneering studies show-ed that if the fades connecting pairs of transmit and receive antenna elements are independently, identically distributed, MEA's offer a large increase in capacity compared to single-antenna systems. An MEA system can be described in terms of spatial eigenmodes, which are single-input single-output subchannels. The channel capacity of an MEA is the sum of capacities of these subchannels. We will show that the fading correlation affects the MEA capacity by modifying the distributions of the gains of these subchannels. The fading correlation depends on the physical parameters of MEA and the scatterer characteristics. in this paper, to characterize the fading correlation, we employ an abstract model, which is appropriate for modeling narrow-band Rayleigh fading in filed wireless systems.