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Overview of spatial channel models for antenna array communication systems

机译:天线阵列通信系统空间信道模型概述

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Spatial antenna diversity has been important in improving the radio link between wireless users. Historically, microscopic antenna diversity has been used to reduce the fading seen by a radio receiver, whereas macroscopic diversity provides multiple listening posts to ensure that mobile communication links remain intact over a wide geographic area. In later years, the concepts of spatial diversity have been expanded to build foundations for emerging technologies, such as smart (adaptive) antennas and position location systems. Smart antennas hold great promise for increasing the capacity of wireless communications because they radiate and receive energy only in the intended directions, thereby greatly reducing interference. To properly design, analyze, and implement smart antennas and to exploit spatial processing in emerging wireless systems, accurate radio channel models that incorporate spatial characteristics are necessary. In this tutorial, we review the key concepts in spatial channel modeling and present emerging approaches. We also review the research issues in developing and using spatial channel models for adaptive antennas.
机译:空间天线分集对于改善无线用户之间的无线电链路非常重要。从历史上看,微观天线分集已被用于减少无线电接收机所见的衰落,而宏观分集提供多个侦听站以确保移动通信链路在广阔的地理区域内保持完整。在后来的几年中,空间分集的概念已得到扩展,从而为新兴技术(例如智能(自适应)天线和定位系统)奠定了基础。智能天线在提高无线通信能力方面具有广阔的前景,因为它们仅在预期的方向上辐射和接收能量,从而大大减少了干扰。为了正确地设计,分析和实现智能天线并利用新兴无线系统中的空间处理,需要结合空间特征的精确无线电信道模型。在本教程中,我们将回顾空间通道建模中的关键概念并介绍新兴的方法。我们还将回顾在开发和使用自适应天线的空间信道模型方面的研究问题。

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