A space-time correlation model for multielement antenna systems in mobile fading channels
A space-time correlation model for multielement antenna systems in mobile fading channels
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DOI：
10.1109/49.995514
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发表时间：
2002-04-01
影响因子：
16.4
通讯作者：
Kaveh, M
中科院分区：
文献类型：
--
作者：
Abdi, A;Kaveh, M
移动衰落信道中的多元件天线系统的分析和设计需要一个用于底层多输入多输出（MIMO）信道链路之间的时空互相关的模型。在本文中，我们提出了一种用于移动频率非选择性莱斯衰落MIMO信道的通用空时互相关函数，其中考虑了各种感兴趣的参数，例如基站和用户的角度扩展、基站和用户之间的距离、信号到达的平均方向、阵列配置和多普勒扩展。新的时空互相关函数以干净紧凑的形式包含了 MIMO 衰落信道的所有相关参数，适用于数学分析和数值计算/模拟。它还涵盖了许多已知的相关模型作为特殊情况。我们通过阐明广泛接受的 MIMO 衰落信道相关模型的局限性，展示了新的时空相关模型的实用性。作为另一个应用，我们量化了用户周围的非各向同性散射对 MIMO 衰落信道容量的影响。
Analysis and design of multielement antenna systems in mobile fading channels require a model for the space-time cross correlation among the links of the underlying multiple-input multiple-output (MIMO) channel. In this paper, we propose a general space-time cross-correlation function for mobile frequency nonselective Rice fading MIMO channels, in which various parameters of interest such as the angle spreads at the base station and the user, the distance between the base station and the user, mean directions of the signal arrivals, array configurations, and Doppler spread are all taken into account. The new space-time cross-correlation function includes all the relevant parameters of the MIMO fading channel in a clean compact form, suitable for both mathematical analysis and numerical calculations/simulations. It also covers many known correlation models as special cases. We demonstrate the utility of the new space-time correlation model by clarifying the limitations of a widely accepted correlation model for MIMO fading channels. As another application, we quantify the impact of nonisotropic scattering around the user, on the capacity of a MIMO fading channel.